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1

O’Sullivan, Denis, Hazel McArdle, Sing Wei Ng, Paula Bourke, Robert Forster y Liam O’Neill. "Deposition of Cell Culture Coatings Using a Cold Plasma Deposition Method". Applied Sciences 10, n.º 19 (24 de septiembre de 2020): 6670. http://dx.doi.org/10.3390/app10196670.

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Collagen coatings were applied onto polystyrene microplates using a cold atmospheric pressure plasma process. The coatings were compared to standard wet chemical collagen thin films using microscopy, surface energy, infra-red spectroscopy, electrophoresis, and cell culture techniques. Thin films were also deposited on gold electrodes using both coating methods and their structural and barrier properties probed using cyclic voltammetry. While the wet chemical technique produced a thicker deposit, both films appear equivalent in terms of coverage, porosity, structure, and chemistry. Significantly, the cold plasma method preserves both the primary and secondary structure of the protein and this results in high biocompatibility and cell activity that is at least equivalent to the standard wet chemical technique. The significance of these results is discussed in relation to the benefits of a single step plasma coating in comparison to the traditional multi-step aseptic coating technique.
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2

Chen, Xiao. "Abrasive Wear Behaviour of MoB/CoCr Cermet Coatings under Different Parameters ". Advanced Materials Research 413 (diciembre de 2011): 258–61. http://dx.doi.org/10.4028/www.scientific.net/amr.413.258.

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In this study, abrasive wear behaviour of MoB/CoCr coating deposited by low pressure plasma spraying (LPPS) was investigated. The properties of microhardness and bond strength of the MoB/CoCr coatings were tested. The abrasive wear properties were evaluated by MLS-225 wet sand rubber wheel tester. The results show that MoB/CoCr coatings are dense and have excellent mechanical properties with high microhardness (930HV0.2) and bond strength (71MPa). The MoB/CoCr coatings have high abrasive wear resistance property.
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3

Al-Dahoudi, Naji y Michel A. Aegerter. "Transparent and Antiglare Conducting Coatings Deposited by Wet Chemical Processes". Key Engineering Materials 230-232 (octubre de 2002): 555–58. http://dx.doi.org/10.4028/www.scientific.net/kem.230-232.555.

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4

Ctibor, Pavel, Micheala Kašparová, Jeremy Bellin, Emmanuel Le Guen y František Zahálka. "Plasma Spraying and Characterization of Tungsten Carbide-Cobalt Coatings by the Water-Stabilized System WSP". Advances in Materials Science and Engineering 2009 (2009): 1–11. http://dx.doi.org/10.1155/2009/254848.

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Tungsten carbide-cobalt powders (WC-17wt% Co) were plasma sprayed by a water-stabilized system WSP. Experiments with variable feeding distances and spray distances were carried out. Thinner coatings were deposited on carbon steel substrates and thicker coatings on stainless steel substrates to compare different cooling conditions. Basic characterization of coatings was done by XRD, SEM, and light microscopy plus image analysis. Microhardness was measured on polished cross-sections. The main focus of investigation was resistance against wear in dry as well as wet conditions. The appropriate tests were performed with set-ups based on ASTM G65 and G75, respectively. The influence of spray parameters onto coating wear performance was observed. The results of mechanical tests were discussed in connection with changes of phase composition and with the quality of the coating's microstructure. The results show that for obtaining the best possible WC-17Co coating with WSP process, from the viewpoint of wear resistance, the desired parameters combination is long feeding distance combined with short spray distance.
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5

Ma, Yue, L. E. Scriven, H. T. Davis y S. L. Erlandsen. "A Time-Sectioning Cryo-Field Emission SEM (Cryo-Fesem) Study of Film Formation in Structured Latex Coatings". Microscopy and Microanalysis 7, S2 (agosto de 2001): 716–17. http://dx.doi.org/10.1017/s1431927600029652.

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Structured latex coatings find such applications as specialty paints, micro- and ultra-filtration membranes, templates for synthesizing inorganic complementary structures, and embedding media for whole-cell based bioreactors. to control well the microstructure and other properties of the final coatings requires understanding the film formation process that transforms a deposited layer of colloidal particles of polymer into a coherent solid coating as it dries, usually in air. This process cannot be visualized by light microscopy techniques when the latex particles are a few hundred down to a few tens of nanometers in size, as is normally the case. Conventional electron microscopy requires too high vacuum for liquid samples to survive. Environmental scanning electron microscopy tolerates modest partial pressure of solvent but is limited to a coating’s top surface and at low resolution. What is needed is to observe the interior of a drying, hydrated coating at nm-resolution. Cryo-SEM is a powerful means of studying microstructure evolution throughout a coating’s thickness in the wet and moist stages of film formation.
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6

Feng, Chang Jie, Ming Sheng Li, Li Xin, Sheng Long Zhu y Fu Hui Wang. "Effect of Al Content on Corrosion Resistance of (Ti1-xAlx)N Coatings under NaCl Deposit in Wet Oxygen at 600°C". Materials Science Forum 539-543 (marzo de 2007): 1055–60. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.1055.

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(Ti1-xAlx)N(x=0, 0.1, 0.3) coatings were deposited on 1Cr11Ni2W2MoV stainless steel by arc ion plating. The (Ti1-xAlx)N coatings had B1 NaCl structure, however its preferred orientation change from (111) to (220) with the increase of Al content. A number of nodule-shaped spots identified as rutile TiO2 by XRD formed on the surface of TiN coating after corrosion beneath NaCl deposit in wet oxygen at 600 oC. With the addition of Al, a thin scale composed of Al2O3 and TiO2 formed on the surface of the (Ti1-xAlx)N coatings instead of a scale of TiO2 on TiN coating, thereby their corrosion resistance was remarkably enhanced.
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7

Heusing, S., P. W. de Oliveira, E. Kraker, A. Haase, C. Palfinger y M. Veith. "Wet chemical deposited ITO coatings on flexible substrates for organic photodiodes". Thin Solid Films 518, n.º 4 (diciembre de 2009): 1164–69. http://dx.doi.org/10.1016/j.tsf.2009.06.056.

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8

Shamray, V. F., V. N. Serebryany, A. S. Kolyanova, V. I. Kalita, V. S. Komlev, S. M. Barinov, D. I. Komlev y M. V. Barybin. "Quantitative texture analysis of a hydroxyapatite coatings plasma-sprayed on titanium substrates at different temperatures". Industrial laboratory. Diagnostics of materials 86, n.º 12 (17 de diciembre de 2020): 23–31. http://dx.doi.org/10.26896/1028-6861-2020-86-12-23-31.

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Artificial hydroxyapatite exhibits an excellent biocompatibility with tissues of human body. However, poor mechanical properties of hydroxyapatites and low reliability in wet environments restrict their use. These limitations can be overcome by applying the hydroxyapatite as a coating onto metallic implants. X-ray diffraction analysis (restoration of orientation distribution function from pole figures and the Rietveld method) and scanning electron microscopy have been used to study thick (~330 μm) plasma-sprayed hydroxyapatite coatings. The coatings were deposited onto Ti – 2Al – 1Mn alloy substrates, one of which was held at room temperature (20°C) whereas the other substrate was preheated to 550°C. The texture of the coating deposited on substrate held at room temperature is characterized by the (001)[510] orientation, the volume fraction of which is 0.08, while the coating deposited on preheated substrate has the (001)[410] orientation, the volume fraction of which is 0.10. Results of texture analysis are qualitatively supported by the Rietveld refinement data. The problem of the formation of basal texture in plasma-sprayed hydroxyapatite coatings is discussed in terms of quantitative texture analysis in relation to the differences in the substrate temperature and spraying parameters. It was concluded that the quantitative texture analysis is of importance for deeper understanding the effect of spraying parameters on the formation of hydroxyapatite coatings.
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9

Bajat, Jelena, Vesna Miskovic-Stankovic, Jovan Popic y Dragutin Drazic. "The adhesion of epoxy cataphoretic coating on phosphatized hot-dip galvanized steel". Chemical Industry 60, n.º 11-12 (2006): 316–20. http://dx.doi.org/10.2298/hemind0612316b.

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The influence of hot-dip galvanized steel surface pretreatment on the adhesion of epoxy cataphoretic coating was investigated. Phosphate coatings were deposited on hot-dip galvanized steel and the influence of fluoride ions in the phosphating plating bath, as well as the deposition temperature of the plating bath, were investigated. The dry and wet adhesion of epoxy coating were measured by a standard pull-off method. The surface roughness of phosphatized galvanized steel was determined, as well as the wettability of the metal surface by emulsion of the epoxy resin in water. The adhesion of epoxy coatings on phosphatized hot-dip galvanized steel was investigated in 3wt.%NaCI.
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10

Tomków, Jacek, Dariusz Fydrych y Kamil Wilk. "Effect of Electrode Waterproof Coating on Quality of Underwater Wet Welded Joints". Materials 13, n.º 13 (1 de julio de 2020): 2947. http://dx.doi.org/10.3390/ma13132947.

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In this paper, the effects of different hydrophobic coatings on the surface of covered electrodes on the quality of wet welded carbon steel joints were discussed. Commonly available hydrophobic substances used in industrial applications were selected for the research. The aim of using waterproof coatings was to check the possibility to decreasing the susceptibility of high-strength low-alloy S460N steel to cold cracking. During experiments diffusible hydrogen content in deposited metal determination by mercury method, metallographic macro- and microscopic testing and hardness measurements were performed. Investigations showed that waterproof coatings laid on covered electrodes can improve the quality of wet welded joints, by decreasing the Vickers HV10 hardness in heat-affected zone and decreasing the diffusible hydrogen content in deposited metal, which minimalize possibility of cold cracking.
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11

Wang, Guang Hai, Yue Zhang y Yu Feng Chen. "Silica Coatings Pigmented with Core-Shell Particles for High-Temperature Radiation Heat Shields". Key Engineering Materials 512-515 (junio de 2012): 1074–77. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1074.

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Hollow glass micro-beads uniformly coated by a shell of titania with thickness of 50 to 300 nm, were fabricated by wet chemical methods. The pigments were dispersed in silica coatings,then the pigmented coatings were deposited on quartz substrates by sol-gel spin-coating method with a thickness of about 80 µm. SEM, TEM and FT-IR techniques were used to characterize the microstructure and properties of the coatings. FT-IR indicated average infrared transmittance of coatings containing the core-shell particles was significantly lower than that of coatings containing no functional particles or containing hollow glass micro-beads, when the volume fraction of core-shell particles was just 5%. In view of its low infrared transmittance, pigmented silica coatings may find applications in high-temperature heat-insulating materials for reducing radiation heat transfer.
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12

Schmidt, H., M. Akarsu, Th S. Müller, K. Moh, G. Schäfer, D. J. Strauss y M. Naumann. "The formation of gradients in wet deposited coatings with photocatalytically active nanoparticles". Research on Chemical Intermediates 31, n.º 4-6 (junio de 2005): 535–53. http://dx.doi.org/10.1163/1568567053956680.

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13

Piska, Miroslav, Jan Dvořáček, Alexandra Sizová, Josef Sedlák, Aleš Polzer y Miloslav Forejt. "On the Cutting Performance of Nano-(Tix,Al1-x)N PVD Coatings". Key Engineering Materials 465 (enero de 2011): 395–98. http://dx.doi.org/10.4028/www.scientific.net/kem.465.395.

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It is well known that hard coatings can extend the lifetime of production tools in many industrial applications significantly [1]. Higher cutting speeds, dry cutting or a better quality of machined surface can present the typical benefits of the protective surfaces so hard coatings receive a great interest from industrial and research organizations. Among the most important parameters of the coatings belong properties such as resistance to oxidation, thermal and abrasion, and good adhesion and tribological properties. The hard coatings based on (Tix,Al1-x)N prevails with unique properties belong to the most used coatings today. These coatings are deposited by PVD technology using either arc technologies or magnetron sputtering systems. New nanocomposite coatings (Ti,Al)N and (Ti0.4,Al0.6)N were tested in dry and wet cooling conditions and this paper deals with material analyses of the coating, testing of the cutting performance for a grooving technology in hardened low-alloyed steel.
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14

Zhu, Ming y Zhi Hua Wang. "Effects of Water Vapor on the Oxidation Behaviors of Cr-Al-N Coatings". Advanced Materials Research 476-478 (febrero de 2012): 2083–86. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.2083.

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Cr1-xAlxN coatings with different aluminum content were deposited on K38G alloy by reactive magnetron sputtering method. Oxidation behaviors of these coatings were investigated at 1000°C in air+10 vol.% water vapor. The surface morphologies and the microstructure of the oxide scales were analyzed by SEM and XRD, respectively. The results showed that the oxidation of the Cr1-xAlxN coatings in the wet air also obeyed the parabolic law; however, compared to that in the dry air, existing of 10 vol. % water vapor increased the parabolic rate constants of the coatings. It was believed that the accelerating of the oxidation rates was owing to easily outwards diffusion of Cr through the looser and coarser oxide scales formed on the surface of the coatings when oxidized in wet air.
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15

Saremi, Raha, Nikolay Borodinov, Amine Mohamed Laradji, Suraj Sharma, Igor Luzinov y Sergiy Minko. "Adhesion and Stability of Nanocellulose Coatings on Flat Polymer Films and Textiles". Molecules 25, n.º 14 (16 de julio de 2020): 3238. http://dx.doi.org/10.3390/molecules25143238.

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Renewable nanocellulose materials received increased attention owing to their small dimensions, high specific surface area, high mechanical characteristics, biocompatibility, and compostability. Nanocellulose coatings are among many interesting applications of these materials to functionalize different by composition and structure surfaces, including plastics, polymer coatings, and textiles with broader applications from food packaging to smart textiles. Variations in porosity and thickness of nanocellulose coatings are used to adjust a load of functional molecules and particles into the coatings, their permeability, and filtration properties. Mechanical stability of nanocellulose coatings in a wet and dry state are critical characteristics for many applications. In this work, nanofibrillated and nanocrystalline cellulose coatings deposited on the surface of polymer films and textiles made of cellulose, polyester, and nylon are studied using atomic force microscopy, ellipsometry, and T-peel adhesion tests. Methods to improve coatings’ adhesion and stability using physical and chemical cross-linking with added polymers and polycarboxylic acids are analyzed in this study. The paper reports on the effect of the substrate structure and ability of nanocellulose particles to intercalate into the substrate on the coating adhesion.
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16

Mallik, Awadesh, Nandadulal Dandapat, Shirshendu Chakraborty, Ashok Mandal, Jiten Ghosh, Manju Unnikrishnan, Sandip Bysakh y Vamsi Balla. "Characterizations of microwave plasma CVD grown polycrystalline diamond coatings for advanced technological applications". Processing and Application of Ceramics 8, n.º 2 (2014): 69–80. http://dx.doi.org/10.2298/pac1402069m.

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Polycrystalline diamond (PCD) coatings ranging from few microns to several hundred microns thickness have been grown by 915MHz microwave plasma reactor with 9000W power. The coatings were deposited on 100mm diameter silicon (Si) substrate from few hours to several days of continuous runs. PCD coatings were made freestanding by wet chemical etching technique. The deposited PCDs were evaluated by X-ray diffraction (XRD), scanning electronmicroscopy (SEM), Raman spectroscopy,X-ray photoelectron spectroscopy (XPS) for physical characterization and compared with authors? earlier work. Refractive index of 2.41 was obtained at 633 nm wavelength and a maximum of 6.6 W?cm-1K-1 value for thermal conductivity could be achieved with the grown coatings. The values are well above the existing non-diamond heat spreading substrates, which makes the grown PCDs as candidates for heat spreaders in different technological applications. High refractive in- dex along with translucent nature of the white freestanding PCDs, make them potential candidate for optical windows.
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17

Petersen, Svea, Sebastian Kaule, Michael Teske, Ingo Minrath, Klaus-Peter Schmitz y Katrin Sternberg. "Development andIn VitroCharacterization of Hyaluronic Acid-Based Coatings for Implant-Associated Local Drug Delivery Systems". Journal of Chemistry 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/587875.

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The development of drug-eluting coatings based on hyaluronic acid (HA) is especially promising for implant-associated local drug delivery (LDD) systems, whose implantation provokes high insertion forces, as, for instance, cochlear implants or drug-coated balloons (DCB). The lubricious character of HA can then reduce the coefficient of friction and serve as drug reservoir simultaneously. In this context, we investigated several plasma- and wet-chemical methods for the deposition of HA-based coatings with LDD function on polyamide 12 as a model implant surface, conventionally used for DCB. In contrast to aminosilane, epoxy silane surface layers allowed the covalent attachment of a smooth and uniform HA base layer, which provided good adherence of further HA layers deposited by manual dip coating at a subsequent processing stage. The applied HA-crosslinking procedure during dip coating influences the transfer and release of paclitaxel, which could be reproducibly incorporated via infiltration. While crosslinking with N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride provided HA coatings on DCB, which allowed for an efficient paclitaxel transfer upon expansion in a vessel model, crosslinking with glutardialdehyde resulted in a slower drug release being more appropriate for implants with longer residence time in the body. The developed HA coating is hence well suited for spontaneous and sustained LDD.
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18

Nevosad, Andreas, Saranya Azhaarudeen, Nicole Doerr, Heike Zacharias, Jürgen Klarner y Ewald Badisch. "Initial Damage Mechanism and Running-In Behaviour of Phosphate Conversion Coatings". Key Engineering Materials 721 (diciembre de 2016): 356–61. http://dx.doi.org/10.4028/www.scientific.net/kem.721.356.

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This work is focused on the damage and wear mechanisms of phosphate conversion coatings which were deposited onto steel substrates by a wet-chemical process. For studying the damage mechanism, sets of multiple scratches were performed. Scratch tests along with SEM micrographs revealed the early damage mechanisms as well as the running-in friction and wear behaviour of phosphate conversion coatings. The deeper understanding allows to increase tribological performance in terms of controlled friction and wear resistance of technical components. This way, promising measures in reduction of seizing and increase of lifetime for such components could be developed.
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19

Loanapakul, Teerawat, Yuichi Otsuka y Yoshiharu Mutoh. "Fatigue and Acoustic Emission Behavior of Plasma Sprayed HAp Top Coat and HAp/Ti Bond Coat with HAp Top Coat on Commercially Pure Titanium". Key Engineering Materials 452-453 (noviembre de 2010): 857–60. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.857.

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In the conventional hydroxyapatite (HAp) coating, the surface of commercially pure titanium (Cp-Ti) is blasted with Al2O3 grid-blasting powders and then plasma-sprayed with HAp. To improve the adhesive strength of HAp coating, the grid-blasting with Al2O3 powders and subsequently wet-blasting by HAp/Ti mixed powders were applied on Cp-Ti substrate at ambient temperature. On the wet-blasted surface of Cp-Ti, two-layers of coating composed of HAp/Ti bond coat and HAp top coat were deposited by plasma spraying. Both types of HAp-coated specimen could survive up to 107 cycles without spallation of HAp coating at the stress amplitude of 120 MPa under four point bending fatigue test. In order to clarify mechanical failure behavior of the coatings and Ti substrate, acoustic emission (AE) signals during the entire fatigue process were observed. Relationship between AE behavior and cracking process of coated specimen was evaluated. HAp top coat with HAp/Ti bond coat strongly improved the adhesive and cohesive strength, where dense AE signals occurred at the early stage of fatigue test corresponded to plastic deformation of Ti substrate and micro-cracks in coated layers. AE signals occurred at the final stage corresponded to crack propagation in coated specimen and spallations of coated layers.
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20

Fominski, Vyacheslav, Dmitry Fominski, Roman Romanov, Mariya Gritskevich, Maxim Demin, Petr Shvets, Ksenia Maksimova y Alexander Goikhman. "Specific Features of Reactive Pulsed Laser Deposition of Solid Lubricating Nanocomposite Mo–S–C–H Thin-Film Coatings". Nanomaterials 10, n.º 12 (8 de diciembre de 2020): 2456. http://dx.doi.org/10.3390/nano10122456.

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This work investigates the structure and chemical states of thin-film coatings obtained by pulsed laser codeposition of Mo and C in a reactive gas (H2S). The coatings were analysed for their prospective use as solid lubricating coatings for friction units operating in extreme conditions. Pulsed laser ablation of molybdenum and graphite targets was accompanied by the effective interaction of the deposited Mo and C layers with the reactive gas and the chemical states of Mo- and C-containing nanophases were interdependent. This had a negative effect on the tribological properties of Mo–S–C–H nanocomposite coatings obtained at H2S pressures of 9 and 18 Pa, which were optimal for obtaining MoS2 and MoS3 coatings, respectively. The best tribological properties were found for the Mo–S–C–H_5.5 coating formed at an H2S pressure of 5.5 Pa. At this pressure, the x = S/Mo ratio in the MoSx nanophase was slightly less than 2, and the a-C(S,H) nanophase contained ~8 at.% S and ~16 at.% H. The a-C(S,H) nanophase with this composition provided a low coefficient of friction (~0.03) at low ambient humidity and 22 °C. The nanophase composition in Mo–S–C–H_5.5 coating demonstrated fairly good antifriction properties and increased wear resistance even at −100 °C. For wet friction conditions, Mo–S–C–H nanocomposite coatings did not have significant advantages in reducing friction compared to the MoS2 and MoS3 coatings formed by reactive pulsed laser deposition.
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21

Vopát, Tomáš, Martin Sahul, Marián Haršáni, Ondřej Vortel y Tomáš Zlámal. "The Tool Life and Coating-Substrate Adhesion of AlCrSiN-Coated Carbide Cutting Tools Prepared by LARC with Respect to the Edge Preparation and Surface Finishing". Micromachines 11, n.º 2 (5 de febrero de 2020): 166. http://dx.doi.org/10.3390/mi11020166.

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Nanocomposite AlCrSiN hard coatings were deposited on the cemented carbide substrates with a negative substrate bias voltage within the range of −80 to −120 V using the cathodic arc evaporation system. The effect of variation in the bias voltage on the coating-substrate adhesion and nanohardness was investigated. It was clear that if bias voltage increased, nanohardness increased in the range from −80 V to −120 V. The coating deposited at the bias voltage of −120 V had the highest nanohardness (37.7 ± 1.5 GPa). The samples were prepared by brushing and wet microblasting to finish a surface and prepare the required cutting edge radii for the tool life cutting tests and the coating adhesion observation. The indents after the static Mercedes indentation test were studied by scanning the electron microscope to evaluate the coating-substrate adhesion. The longer time of edge preparation with surface finishing led to a slight deterioration in the adhesion strength of the coating to the substrate. The tool wear of cemented carbide turning inserts was studied on the turning centre during the tool life cutting test. The tested workpiece material was austenitic stainless steel. The cemented carbide turning inserts with larger cutting edge radius were worn out faster during the machining. Meanwhile, the tool life increased when the cutting edge radius was smaller.
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22

OZIMINA, Dariusz, Joanna KOWALCZYK y Monika MADEJ. "THE IMPACT OF BIODEGRADABLE CUTTING FLUID ON THE TRIBOLOGICAL PROPERTIES OF THE FRICTION PAIRS". Tribologia 265, n.º 1 (29 de febrero de 2016): 67–78. http://dx.doi.org/10.5604/01.3001.0010.7581.

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This paper discusses the results of wear tests performed with a T-01 M tribometer for a ball-on-disc configuration in sliding contact. The tests were carried out for HS6-5-2C steel discs with and without a TiAlN coating deposited by physical vapour deposition (PVD), which were in contact with 100Cr6 steel balls. The tests were conducted under dry friction conditions and under lubricated friction conditions with a cutting fluid containing zinc aspartate. The coating structure was observed using a JSM - 7100F scanning electron microscope. The surface texture of the discs and the balls was analysed as well as good adhesion to the substrate. Coated tools can operate under dry and wet machining conditions, and they improve the operating parameters of the element. Such coatings can be produced by chemical vapour deposition (CVD), physical vapour deposition (PVD), or similar techniques [L. 8, 4, 13].
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23

Asenjo, B., C. Sanz, C. Guillén, A. M. Chaparro, M. T. Gutiérrez y J. Herrero. "Indium sulfide buffer layers deposited by dry and wet methods". Thin Solid Films 515, n.º 15 (mayo de 2007): 6041–44. http://dx.doi.org/10.1016/j.tsf.2006.12.058.

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24

Niles, David W., Donna Waters y Doug Rose. "Chemical reactivity of CdCl2 wet-deposited on CdTe films studied by X-ray photoelectron spectroscopy". Applied Surface Science 136, n.º 3 (noviembre de 1998): 221–29. http://dx.doi.org/10.1016/s0169-4332(98)00340-7.

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25

Huang, Guosheng, Xiangbo Li y Lukuo Xing. "Corrosion behavior of low pressure cold sprayed Zn-Ni composites coating". Anti-Corrosion Methods and Materials 63, n.º 6 (7 de noviembre de 2016): 461–69. http://dx.doi.org/10.1108/acmm-11-2014-1470.

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Purpose This paper aims to examine the performance of low-pressure cold-sprayed zinc–nickel (Zn-Ni) composites coating, i.e. whether it has the same performance as Zn-Ni alloy coating. Design/methodology/approach In this paper, Zn-Ni composites coatings containing four different nickel contents were prepared with commercial DYMET 413 low-pressure cold spraying system under the same parameters. Corrosion behaviors of four kinds of coatings were examined with potentiodynamic polarization curves and electrochemical impedance spectroscopy methods, combined with scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. Findings Corrosion behavior of Zn-Ni composites coating is similar to Zn-Ni alloy coating. In the early stages of immersion, the anodic dissolution of zinc happens, which results in the formation of a zinc hydroxide layer. With the continuous infiltration of chloride ion, zinc hydroxide will get converted to zinc oxide, basic zinc chloride and basic zinc carbonate. The presence of nickel in coatings can prevent zinc hydroxide from converting into zinc oxide. Research limitations/implications Further research should be done on improving the deposition efficiency, as the deposition efficiency of low-pressure cold spray is lower than 30 per cent. Practical implications Low-pressure cold spray coating can be used in cyclic dry/wet conditions to prolong the life of a steel structure. Social implications Low-pressure cold spray Zn-Ni coating is an environmentally friendly anticorrosion method which can be used as an alternative of hexavalent chromium passivation coating. Originality/value Zn-Ni composite coating can be deposited on steel directly by low-pressure cold spray by mechanically mixing the powders together. The composite coating also has the same long-term anticorrosion performance as Zn-Ni alloy coating.
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26

Li, Yi, Lihua Chen, Jamie P. Wooding, Fengyi Zhang, Ryan P. Lively, Rampi Ramprasad y Mark D. Losego. "Controlling wettability, wet strength, and fluid transport selectivity of nanopaper with atomic layer deposited (ALD) sub-nanometer metal oxide coatings". Nanoscale Advances 2, n.º 1 (2020): 356–67. http://dx.doi.org/10.1039/c9na00417c.

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Kim, Areum, Seon Jea Lee, Eunmi Choi y Sung Gyu Pyo. "Characterization and Selective Properties of Electroless Deposited All Wet Contact Electrode". Journal of The Electrochemical Society 161, n.º 3 (2014): D118—D124. http://dx.doi.org/10.1149/2.072403jes.

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Lim, Way Foong y Hock Jin Quah. "Wet oxidation growth of hafnium doped tantalum oxide films with different composition deposited on silicon substrate". Applied Surface Science 526 (octubre de 2020): 146722. http://dx.doi.org/10.1016/j.apsusc.2020.146722.

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Huynh, Vivian, Ngan K. Ngo y Teresa D. Golden. "Surface Activation and Pretreatments for Biocompatible Metals and Alloys Used in Biomedical Applications". International Journal of Biomaterials 2019 (2 de junio de 2019): 1–21. http://dx.doi.org/10.1155/2019/3806504.

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To improve the biocompatibility of medical implants, a chemical composition of bone-like material (e.g., hydroxyapatite) can be deposited on the surface of various substrates. When hydroxyapatite is deposited on surfaces of orthopedic implants, several parameters must be addressed including the need of rapid bone ingrowth, high mechanical stability, corrosion resistance, biocompatibility, and osseointegration induction. However, the deposition process can fail due to poor adhesion of the hydroxyapatite coating to the metallic substrate. Increasing adhesion by enhancing chemical bonding and minimizing biocoating degradation can be achieved through surface activation and pretreatment techniques. Surface activation can increase the adhesion of the biocoating to implants, providing protection in the biological environment and restricting the leaching of metal ions in vivo. This review covers the main surface activation and pretreatment techniques for substrates such as titanium and its alloys, stainless steel, magnesium alloys, and CoCrMo alloys. Alkaline, acidic, and anodizing techniques and their effects on bioapatite deposition are discussed for each of the substrates. Other chemical treatment and combination techniques are covered when used for certain materials. For titanium, the surface pretreatments improve the thickness of the TiO2 passive layer, improving adhesion and bonding of the hydroxyapatite coating. To reduce corrosion and wear rates on the surface of stainless steel, different surface modifications enhance the bonding between the bioapatite coatings and the substrate. The use of surface modifications also improves the morphology of hydroxyapatite coatings on magnesium surfaces and limits the concentration of magnesium ions released into the body. Surface treatment of CoCrMo alloys also decreased the concentration of harmful ions released in vivo. The literature covered in this review is for pretreated surfaces which then undergo deposition of hydroxyapatite using electrodeposition or other wet deposition techniques and mainly limited to the years 2000-2019.
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30

Nakamura, Daisuke, Taishi Kimura, Kenji Itoh, Naoki Fujimoto, Shugo Nitta y Hiroshi Amano. "Tungsten carbide layers deposited on graphite substrates via a wet powder process as anti-parasitic-reaction coatings for reactor components in GaN growth". CrystEngComm 22, n.º 15 (2020): 2632–41. http://dx.doi.org/10.1039/c9ce01971e.

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31

Guo, P. Y., C. L. Zeng, N. Wang y Y. Shao. "FeAl-based coatings deposited by high-energy micro-arc alloying process for wet-seal areas of molten carbonate fuel cell". Journal of Power Sources 217 (noviembre de 2012): 485–90. http://dx.doi.org/10.1016/j.jpowsour.2012.06.054.

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32

Gholampour, Nadia, Dominikus Brian y Morteza Eslamian. "Tailoring Characteristics of PEDOT:PSS Coated on Glass and Plastics by Ultrasonic Substrate Vibration Post Treatment". Coatings 8, n.º 10 (24 de septiembre de 2018): 337. http://dx.doi.org/10.3390/coatings8100337.

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In this work, we excited as-spun wet films of PEDOT:PSS by ultrasonic vibration with varying frequency and power. This is a low-cost and facile technique for tailoring the structural and surface characteristics of solution-processed thin films and coatings. We deposited the coatings on both rigid and flexible substrates and performed various characterization techniques, such as atomic force microscopy (AFM), scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR), transmittance, electrical conductivity, and contact angle measurements, to understand how the ultrasonic vibration affects the coating properties. We found that as a result of ultrasonic vibration, PEDOT:PSS sheet conductivity increases up to five-fold, contact angle of water on PEDOT:PSS increases up to three-fold, and PEDOT:PSS roughness on glass substrates substantially decreases. Our results affirm that ultrasonic vibration can favor phase separation of PEDOT and PSS and rearrangement of PEDOT-rich charge transferring grains. In addition to providing a systematic study on the effect of ultrasonic frequency and power on the film properties, this work also proves that the ultrasonic vibration is a novel method to manipulate and tailor a wide range of properties of solution-processed thin films, such as compactness, chain length and arrangement of polymer molecules, conductivity, and surface wettability. This ultrasonication method can serve organic, printed and flexible electronics.
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33

Karimov, Kh S., Nisar Ahmed, M. Mehran Bashir, Fakhra Aziz, M. Zeeshan Rizvi, Adam Khan, M. Tahir, Nayyer Abbas Zaidi, Muhammad Hafeez y Arshad Saleem Bhatti. "Flexible resistive tensile load cells based on MWCNT/rubber composites". Pigment & Resin Technology 44, n.º 3 (5 de mayo de 2015): 187–91. http://dx.doi.org/10.1108/prt-06-2014-0047.

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Purpose – The purpose of this paper is to fabricate and investigate sensing properties of a novel, flexible resistive tensile load cells based on multi-walled carbon nano-tubes (MWCNTs)/rubber composites. The use of carbon nanotubes makes it very attractive for being used as sensors. Design/methodology/approach – On thin rubber substrate, MWCNTs powder was deposited and pressed at elevated temperature. Two types of samples were prepared: first sample was made by depositing MWCNTs suspension in water on the substrate, then the sample was dried at room temperature; the second sample was prepared by applying dry MWCNTs powder directly on the substrate. Findings – The resistances of the cells made from wet MWCNT powder are much lower than those made with dry powder. It was found that the fabricated load cells were highly sensitive to the force and showed good repeatability. The resistance of the flexible resistive tensile MWCNTs/rubber composite load cells increased 1.37 times, on average, with the increasing force (up to 0.045 N). The sensitivity of the cells was equal to 142 N-1. Practical implications – The device fabrication method used here provides a simple, less expensive and effective approach for preparing resistive tensile load cells. Originality/value – A novel, flexible resistive tensile load cells using MWCNTs/rubber composites have been successfully fabricated and investigated. MWCNTs, in dry and wet form, have been deposited on thin rubber substrates by adopting a very simple and inexpensive technique.
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34

Fourrier, A., A. Bosseboeuf, D. Bouchier y G. Gautherin. "Thermal Oxidation in Wet Oxygen of Reactive Ion‐Beam Sputter‐Deposited Silicon Nitride Films". Journal of The Electrochemical Society 138, n.º 4 (1 de abril de 1991): 1084–89. http://dx.doi.org/10.1149/1.2085720.

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35

Liu, Guanzhou, Cheng Li, Hongkai Lai y Songyan Chen. "Ge Incorporation in HfO[sub 2] Dielectric Deposited on Ge Substrate during Dry/Wet Thermal Annealing". Journal of The Electrochemical Society 157, n.º 6 (2010): H603. http://dx.doi.org/10.1149/1.3369964.

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36

Kim, Kwang Hwan, Taeho Lim, Myung Jun Kim, Seunghoe Choe, Kyung Ju Park, Sang Hyun Ahn, Oh Joong Kwon y Jae Jeong Kim. "Direct Cu Electrodeposition on Electroless Deposited NiWP Barrier Layer on SiO2Substrate for All-Wet Metallization Process". Journal of The Electrochemical Society 161, n.º 14 (2014): D756—D760. http://dx.doi.org/10.1149/2.0291414jes.

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37

Lee, Dong-Kyoon, Jungsik Bang, Mungi Park, Jae-Ho Lee y Heesun Yang. "Organic acid-based wet etching behaviors of Ga-doped ZnO films sputter-deposited at different substrate temperatures". Thin Solid Films 518, n.º 14 (mayo de 2010): 4046–51. http://dx.doi.org/10.1016/j.tsf.2010.01.063.

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38

Favaro, Matteo, Alessandro Patelli, Riccardo Ceccato, Sandra Dirè, Emanuela Callone, Giulia Fredi y Alberto Quaranta. "Thin Films of Plasma-Polymerized n-Hexane and ZnO Nanoparticles Co-Deposited via Atmospheric Pressure Plasma Jet". Coatings 11, n.º 2 (31 de enero de 2021): 167. http://dx.doi.org/10.3390/coatings11020167.

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This study explores the co-deposition of thin polymeric films loaded with nanoparticles for its possible future application as radiation detectors. Thin films containing zinc oxide (ZnO) nanoparticles in plasma polymerized n-hexane (PPH) were deposited on silicon substrates using an atmospheric pressure plasma jet (APPJ). Crystalline ZnO nanoparticles were produced by wet chemistry, characterized, and injected through the plasma with an aerosol buffer. The precursor hydrocarbon was polymerized in atmosphere at room temperature by the plasma, resulting in a highly crosslinked structure chemically stable against common solvents. The polymer structure was characterized by FT-IR, NMR, and thermal analyses. Photoluminescence analysis revealed that ZnO UV excitonic emission is recovered owing to the passivation through polymeric encapsulation, with a remarkable increase in luminescence yield.
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39

Darwish, Abdalla M., Sergey S. Sarkisov, Simeon Wilson, Jamaya Wilson, Eboni Collins, Darayas N. Patel, Kyu Cho et al. "Polymer nanocomposite sunlight spectrum down-converters made by open-air PLD". Nanotechnology Reviews 9, n.º 1 (30 de octubre de 2020): 1044–58. http://dx.doi.org/10.1515/ntrev-2020-0079.

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AbstractWe report, for the first time to our knowledge, on the polymer nanocomposite sunlight spectrum down-converters made by the concurrent multi-beam multi-target pulsed laser deposition (CMBMT-PLD) of phosphor and polymer in ambient air. Phosphor PLD targets were made of down-converting rare-earth (RE)-doped fluorides NaYF4:Yb3+,Er3+, and NaYF4:Yb3+,Tm3+ with a Stokes shift of 620 nm (from 360 to 980 nm), minimizing the effect of re-absorption. The phosphors were synthesized by the wet method. Polymer target was made of poly (methyl methacrylate) known as PMMA. Target ablation was conducted with 1,064 nm beams from an Nd:YAG Q-switched laser. Beam intensity was 2.8 × 1016 W/cm2 for both targets. The substrate was a microscope glass slide. Phosphor nanoparticles with a size ranging from 10 to 50 nm were evenly distributed in the polymer matrix during deposition. The nanoparticles retained the crystalline structure and the fluorescent properties of the phosphor target. There was no noticeable chemical decomposition of the deposited polymer. The products of laser-induced reaction of the polymer target with atmospheric gases did not reach the substrate during PLD. Post-heating of the substrate at ∼90°C led to fusion of separate polymer droplets into uniform coating. Quantum yield of the down-conversion polymer nanocomposite film was estimated to be not less than ∼5%. The proposed deposition method can find its application in making commercial-size down-converter coatings for photo-voltaic solar power applications.
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40

Lorenz, Roland, Michael O’Sullivan, Dietmar Sprenger, Bernhard Lang, Harald Köstenbauer, Jörg Winkler y Christian Mitterer. "Oxidation and wet-etching behavior of MoAlTi thin films deposited by sputtering from a rotatable MoAlTi compound target". Journal of Vacuum Science & Technology B 37, n.º 2 (marzo de 2019): 021202. http://dx.doi.org/10.1116/1.5079866.

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41

Strehle, S., H. Schumacher, D. Schmidt, M. Knaut, M. Albert y J. W. Bartha. "Effect of wet chemical substrate pretreatment on the growth behavior of Ta(N) films deposited by thermal ALD". Microelectronic Engineering 85, n.º 10 (octubre de 2008): 2064–67. http://dx.doi.org/10.1016/j.mee.2008.04.020.

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42

Tian, Qiang, Jiangong Li, Qian Wang, Shu Wang y Xudong Zhang. "Structure and magnetic properties of Ni0.11ZnxCo0.03Fe2.86-xO4 ferrite films deposited on Ag-coated glass substrates by wet chemical method". Thin Solid Films 518, n.º 1 (noviembre de 2009): 313–18. http://dx.doi.org/10.1016/j.tsf.2009.06.042.

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43

Koochaki, Mohammad Sadegh, Saied Nouri Khorasani, Rasoul Esmaeely Neisiany, Ali Ashrafi, Stefano P. Trasatti y Mirko Magni. "A highly responsive healing agent for the autonomous repair of anti-corrosion coatings on wet surfaces. In operando assessment of the self-healing process". Journal of Materials Science 56, n.º 2 (22 de septiembre de 2020): 1794–813. http://dx.doi.org/10.1007/s10853-020-05332-9.

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Abstract A methodology to enrich epoxy coatings of an effective self-healing feature on wet surfaces was developed as a further step on for practical corrosion protection issues. To this aim, a polyetheramine was chemically engineered by grafting catechol units and then successfully encapsulated in microcapsules (MCs) to be finally embedded into an epoxy resin deposited on steel panels. Fourier transform infrared spectroscopy (FTIR), thin-layer chromatography, and 1D and 2D nuclear magnetic resonance spectroscopy confirmed the successful polyetheramine modification by dopamine units. Different dosages of catechol-modified polyetheramine were encapsulated within poly(styrene-co-acrylonitrile) shell via electrospray method to study the influence of dopamine grafting on the healing performance. Scanning electron microscopy (SEM) analysis revealed the formation of the spherical MCs, while FTIR and TGA analyses confirmed the successful encapsulation. The highly responsive self-healing coatings were then prepared by embedding amine- and isocyanate-containing MCs (1:1 weight ratio; 3 wt% overall) as a dual-capsule system exploiting the polyurea formation as a fast healing reaction. In operando electrochemical impedance spectroscopy (EIS) tests were employed to study the underwater self-healing performance. According to the EIS results, monotonically increasing variation with time of the charge transfer resistance was correlated with a fast and effective underwater self-healing performance for the sample using 40 wt% of a catechol-modified healing agent. Such results, combined with others including SEM investigation on the underwater healed samples, point to an improved adhesion of the growing dopamine-bearing polymer to both underlying metal and epoxy edges of the scratch. Graphic abstract
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44

Sundaram, K. B., R. E. Sah, H. Baumann, K. Balachandran y R. M. Todi. "Wet etching studies of silicon nitride thin films deposited by electron cyclotron resonance (ECR) plasma enhanced chemical vapor deposition". Microelectronic Engineering 70, n.º 1 (octubre de 2003): 109–14. http://dx.doi.org/10.1016/s0167-9317(03)00412-x.

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45

Lee, Dong-Kyoon, Ji-Hye Kwon, Young Soo Lim y Heesun Yang. "Concentration-Dependent Wet Etching Behaviors of Ga-Doped ZnO Films Sputter-Deposited at Room Temperature Using Formic and Citric Acids". Journal of The Electrochemical Society 157, n.º 7 (2010): D428. http://dx.doi.org/10.1149/1.3429217.

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46

Vanhaverbeke, Celine, Maarten Cauwe, Arno Stockman, Maaike Op de Beeck y Herbert De Smet. "Comparison of copper electroplating, copper wet etching and linear sweep voltammetry as techniques to investigate the porosity of atomic layer deposited Al2O3". Thin Solid Films 686 (septiembre de 2019): 137424. http://dx.doi.org/10.1016/j.tsf.2019.137424.

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47

Italiano, Cristina, Muhammad Arsalan Ashraf, Lidia Pino, Carmen Williana Moncada Quintero, Stefania Specchia y Antonio Vita. "Rh/CeO2 Thin Catalytic Layer Deposition on Alumina Foams: Catalytic Performance and Controlling Regimes in Biogas Reforming Processes". Catalysts 8, n.º 10 (11 de octubre de 2018): 448. http://dx.doi.org/10.3390/catal8100448.

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: The application of ceramic foams as structured catalyst supports is clearly expanding due to faster mass/heat transfer and higher contact efficiency than honeycomb monoliths and, mainly, packed beds. In this paper, alumina open-cell foams (OCFs) with different pore density (20, 30 and 40 ppi) were coated with Rh/CeO2 catalyst via a two steps synthesis method involving: (i) the solution combustion synthesis (SCS) to in-situ deposit the CeO2 carrier and (ii) the wet impregnation (WI) of the Rh active phase. The catalytic coatings were characterized in terms of morphology and adhesion properties by SEM/EDX analysis and ultrasounds test. Permeability and form coefficient were derived from pressure drop data. Catalytic performance was evaluated towards biogas Steam Reforming (SR) and Oxy-Steam Reforming (OSR) processes at atmospheric pressure by varying temperature (800–900 °C) and space velocity (35,000–140,000 NmL·g−1·h−1). Characteristics time analysis and dimensionless numbers were calculated to identify the controlling regime. Stability tests were performed for both SR and OSR over 200 h of time-on-stream (TOS) through consecutive start-up and shut-down cycles. As a result, homogenous, thin and high-resistance catalytic layers were in situ deposited on foam struts. All structured catalysts showed high activity, following the order 20 ppi < 30 ppi ≈ 40 ppi. External interphase (gas-solid) and external diffusion can be improved by reducing the pore diameter of the OCF structures. Anderson criterion revealed the absence of internal heat transfer resistances, as well as Damköhler and Weisz-Prater numbers excluded any internal mass transfer controlling regime, mainly due to thin coating thickness provided by the SCS method. Good stability was observed over 200 h of TOS for both SR and OSR processes.
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48

Suh, Allison Y. y Andreas A. Polycarpou. "Adhesion and Pull-Off Forces for Polysilicon MEMS Surfaces Using the Sub-Boundary Lubrication Model". Journal of Tribology 125, n.º 1 (31 de diciembre de 2002): 193–99. http://dx.doi.org/10.1115/1.1506313.

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Miniature devices including MEMS and the head disk interface in magnetic storage often include very smooth surfaces, typically having root-mean-square roughness, σ of the order of 10 nm or less. When such smooth surfaces contact, or come into proximity of each other, either in dry or wet environments, then strong intermolecular (adhesive) forces may arise. Such strong intermolecular forces may result in unacceptable and possibly catastrophic adhesion, stiction, friction and wear. In the present paper, a model termed sub-boundary lubrication (SBL) adhesion model is used to calculate the adhesion forces, and an elastic-plastic model is used to calculate the contact forces at typical MEMS interfaces. Several levels of surface roughness are investigated representing polished and as-deposited polysilicon films that are typically found in MEMS. The SBL adhesion model reveals the significance of the surface roughness on the adhesion and pull-off forces as the surfaces become smoother. The validity of using the SBL adhesion model to estimate the pull-off forces in miniature systems is further supported by direct comparison with experimental pull-off force measurements performed on silicon and gold interfaces. Finally, the significance of the interfacial forces as relate to the reliability of MEMS interfaces is discussed.
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49

TUSZYŃSKI, Waldemar, Eugeniusz MATRAS, Jan WULCZYŃSKI, Witold PIEKOSZEWSKI, Marian SZCZEREK, Bogusław WOŹNIAK, Maciej WLAZŁO, Michał NOWICKI y Jacek PRZEPIÓRKA. "A TEST MACHINE AND METHODS FOR TESTING FRICTION AND WEAR OF AN ANTI-SLIP COATING DEPOSITED ON THE SOLES OF SHOES". Tribologia, n.º 4 (31 de agosto de 2017): 83–90. http://dx.doi.org/10.5604/01.3001.0010.6027.

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Injuries due to slips in swimming pools or toilets in hospitals are significant social problems. It primarily concerns children making use of swimming pools or hospitalised old people, and physically disabled. Thus, within the scope of a R&D project, coordinated by the company C.T. Service from Lesznowola, a formula and way of deposition for an anti-slip coating dedicated to the soles of shoes were developed in order to increase friction on wet surfaces. A special machine – T-31 Simulator – for tribological testing of the friction and wear of the soles of shoes was developed. A method for precise determination of the coefficient of friction between a sole of a shoe (with the coating or without, on dry or wet surface) and a floor material, and a method for determination of the life (resistance to abrasion) of the anti-slip coating under conditions simulating walking were developed. To verify the developed test methods, the anti-slip coating was deposited on three types of sole materials, i.e. Thunit, polyurethane, and thermoplastic rubber, sliding against four types of the floor material, i.e. floor tile “Gres,” laminated flooring, sandstone, and granite. The paper presents the developed test device and test methods for friction and wear testing of the anti-slip coating deposited on the soles of shoes. The selected research results are also presented. On their base, a very good repeatability and good resolution of the developed test methods were stated.
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50

Mevellec, Vincent, Dominique Suhr, Thomas Dequivre y Frédérique Raynal. "Electrografted insulator layer as copper diffusion barrier for TSV interposers". Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2013, DPC (1 de enero de 2013): 001051–84. http://dx.doi.org/10.4071/2013dpc-wa14.

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Introduction After many years as a hypothetical possibility, 3D Integrated Circuits (3D IC) stacking has emerged as a potential key enabler for maintaining semiconductor performance trends. Through Silicon Vias (TSVs) sit at the foundation of the 3D-IC revolution and are a key enabler for extending semiconductor integration trends into a new phase. Integrated Device Manufacturers and fabless design houses need small, high-density, fine-pitch vias for improved signal integrity and Si real-estate savings. They need them now, and cannot wait for very thin wafer processing and handling technologies to become mainstream – TSVs must cope with current mainstream wafer thickness. Deep TSVs with Aspect Ratio (AR) greater than 10:1 elegantly fulfill both requirements. But they cannot be manufactured with acceptable yield/cost using traditional dry processes for liner, barrier and seed deposition. Chemical and Physical Vapor Deposition techniques show basic shortcomings and impose high capital investments, holding back the industry-wide adoption of 3D-IC solutions. Beyond that, physical limitations of PVD and CVD techniques prevent to reach a good step coverage of the deposited layers inside the vias, which is required to perform void-free gap filling of electroplated copper. Electrografting polymer layer as copper diffusion barrier. To overcomes those limitation, Alchimer develops alternative wet solutions based on electrografting (eG™) and chemical grafting (cG™) proprietary technologies[1]. Electrografting is based on surface chemistry formulations and processes [2]. It is applied to conductive and semiconductive surfaces, and enables self-oriented growth of thin coatings of various materials, especially polymer and metals, initiated by in-situ chemical reactions between specific precursor molecules and the surface. Due to outstanding thermal, mechanical and electrical properties, electrografted polymer layers are an efficient insulation layer for TSV applications [3]. In this paper, we fill focus on the copper diffusion barrier properties of this eG polymer layer and the associated Cost of Ownership (CoO) reduction for TSV metallization. In fact, electrografted polymer layer can be used as insulator and copper diffusion barrier, involving the removal of copper diffusion barrier and copper seed layer deposition from the conventional process flow. TSV metallization process steps can thus be reduced to 2 steps:- Step 1: insulation and diffusion barrier all together (eGpolymer)- Step 2: Copper filling (electroless copper) We will describe in this paper the electrical, thermo-mechanical and barrier effect properties of the eG polymer film including breakdown voltage, capacitance, dielectric constant, young modulus, thermal stability and SIMS profiles after anneal to demonstrate the diffusion barrier efficiency. Complete metallization of TSV interposers, as an example of successful integration, will be highlighted by several characterizations including SEM cross sections. In addition, CoO comparison will be presented between conventional dry processes and this new wet approach for interposer metallization on the basis of 10:1 aspect ratio TSVs. New reliability data should also be presented, from test vehicles integrating eG layers, in extreme conditions where PECVD SiO2 cannot survive.
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