Academic literature on the topic 'Copper crystalline phases'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Copper crystalline phases.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Copper crystalline phases"

1

Semenov, A. P., Dmitriy Badma-Dorzhievich Tsyrenov, and I. A. Semenova. "Sintez nanokompozitnykh pokrytiy TiN-Cu na printsipe sopryazheniya protsessov vakuumno-dugovogo ispareniya, magnetronnogo raspyleniya i raspyleniya ionnym puchkom." Микология и фитопатология, no. 2 (December 15, 2023): 45–47. http://dx.doi.org/10.31857/s0869573323020064.

Full text
Abstract:
Superhard TiN-Cu composite coatings have been obtained, the synthesis of which is based on the principle of coupling the operating modes of a vacuum arc evaporator a planar magnetron and a plasma ion source. The constitution, structure and properties of TiN-Cu composite coating do not depend on the type of hybrid methods of their synthesis. It is shown that the coatings have a characteristic homogeneous globular structure with crystallite sizes in the range of 20-50 nm and are textured along the plane (111). Copper does not form its own crystalline phase and is not in the crystal lattice of ot
APA, Harvard, Vancouver, ISO, and other styles
2

Che Halin, Dewi Suriyani, Norainiza Saud, and Haiza Haroon. "Microstructure Study on Cuprous Oxide Thin Films Deposited on n-Si Substrate via Sol-Gel Spin Coating Technique." Materials Science Forum 803 (August 2014): 362–66. http://dx.doi.org/10.4028/www.scientific.net/msf.803.362.

Full text
Abstract:
Cuprous oxide thin films were prepared by sol-gel method was successfully deposited onto n-Si substrate. Sol solutions were prepared by dissolving copper (II) acetate in isopropyl alcohol. Diethanolamine and glucopone were added into the sol solution to dissolve the copper (II) acetate rapidly to prevent the precipitation of blue copper (II) acetate. Crystalline phases are identified by X-ray diffraction (XRD) and the crystallite size is estimated by using Scherrer’s formula which indicates that the largest crystallite size is 41.84 nm with the lowest lattice parameter 4.25 Å. The optical ban
APA, Harvard, Vancouver, ISO, and other styles
3

White, Rachel, Paul Thomas, Matthew R. Phillips, Ken Moran, and Richard Wuhrer. "X-Ray Mapping and Scatter Diagram Analysis of the Discoloring Products Resulting from the Interaction of Artist's Pigments." Microscopy and Microanalysis 16, no. 5 (2010): 594–98. http://dx.doi.org/10.1017/s143192761009375x.

Full text
Abstract:
AbstractThe discoloring interaction between the artist's pigments cadmium yellow and the copper-containing malachite, an interaction that is conjectured to cause black spotting in oil paintings of the 19th and early 20th centuries, was examined using X-ray mapping and scatter diagram analysis. The application of these coupled techniques confirmed that copper sulfide phases were produced during discoloration reaction. Scatter diagram analysis indicated that two copper sulfide stoichiometries (CuS and Cu3S2) were present as reaction products where previously only crystalline CuS (covellite) had
APA, Harvard, Vancouver, ISO, and other styles
4

Wang, Xin. "Surface Crystallization in Mg-Based Bulk Metallic Glass during Copper Mold Casting." Advances in Materials Science and Engineering 2014 (2014): 1–4. http://dx.doi.org/10.1155/2014/798479.

Full text
Abstract:
The localized crystallization of Mg54Cu28Ag7Y11bulk metallic glass (BMG) in the injection casting process using a copper mold was investigated. It has been found that several crystalline phases were formed close to the as-cast surface but did not exist in the internal part of the BMG plate. It is abnormal that the as-cast surface is partially crystallized with higher cooling rate than that of inside. Overheating of the melt and nucleation induced by the surface of copper mold play key roles in the abnormal crystallization. It is suggested that the function of copper mold to trigger heterogeneo
APA, Harvard, Vancouver, ISO, and other styles
5

Wang, Yi Ming, Li Jing Zheng, and Shu Jie Pang. "Formation and Mechanical Properties of Mg-Cu-Al-Gd Bulk Metallic Glass Composites." Materials Science Forum 650 (May 2010): 290–94. http://dx.doi.org/10.4028/www.scientific.net/msf.650.290.

Full text
Abstract:
The effect of Al addition to Mg65Cu25Gd10 glassy alloy on the microstructure, thermal properties and mechanical properties were investigated. The Mg65Cu25-xAlxGd10 (x=1-7at. %) bulk metallic glass composites were formed by copper mold casting, and the fraction and size of the crystalline phases in the glassy matrix changed with the Al content. The Mg65Cu24Al1Gd10 glass composite consisted of a small amount of crystalline phases in the glassy matrix possesses high compressive strength up to about 850 MPa.
APA, Harvard, Vancouver, ISO, and other styles
6

Phiri, Tina, Pritam Singh, and Aleksandar Nikoloski. "Mineralogical Characterisation of Copper Slag and Phase Transformation after Carbocatalytic Reduction for Hydrometallurgical Extraction of Copper and Cobalt." Metals 14, no. 10 (2024): 1119. http://dx.doi.org/10.3390/met14101119.

Full text
Abstract:
Copper smelting slag is a significant potential resource for cobalt and copper. The recovery of copper and cobalt from copper slag could significantly augment the supply of these metals, which are essential to facilitating the transition to green energy while simultaneously addressing environmental concerns regarding slag disposal. However, the complex mineral composition of copper slag poses an enormous challenge. This study investigated the mineralogical and chemical characteristics of copper slag, which are vital for devising the most effective processing techniques. XRD and FESEM-EDS were
APA, Harvard, Vancouver, ISO, and other styles
7

Purvis, O. W., B. Pawlik-Skowrońska, G. Cressey, G. C. Jones, A. Kearsley, and J. Spratt. "Mineral phases and element composition of the copper hyperaccumulator lichen Lecanora polytropa." Mineralogical Magazine 72, no. 2 (2008): 607–16. http://dx.doi.org/10.1180/minmag.2008.072.2.607.

Full text
Abstract:
AbstractMineral phases and element localization were investigated in the vivid turquoise-coloured lichen, Lecanora polytropa, sampled from a psammite boulder in a wall supporting mine spoil at the abandoned copper mine, Riddarhyttan Kopparverke, southern Sweden. Normally pale yellowish (usnic acid), the lichen is turquoise coloured internally with bluish inclusions. X-ray mapping shows that Cu occurs on and within the lichen and does not coincide with P or S, suggesting that it is indeed associated with carbon or other elements not detected (or reported) using X-ray mapping. Scanning electron
APA, Harvard, Vancouver, ISO, and other styles
8

Ma, Minghong, and Yongqian Huang. "Impact of adding Na2SiF6 on the crystal phase and copper valence state in glass ceramics made from leftover granite for use as architectural ornamentation." Journal of Physics: Conference Series 2842, no. 1 (2024): 012017. http://dx.doi.org/10.1088/1742-6596/2842/1/012017.

Full text
Abstract:
Abstract The accumulation of granite waste can result in the occupation of a considerable amount of land resources. Using granite waste as glass ceramics for architectural decoration represents a potential solution to this issue. The microstructure, valence state, and crystalline phase of copper ions were examined by using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). The findings demonstrated that the concentration of Na2SiF6 affects the valence condition of Cu ions in crystallized glass. The c
APA, Harvard, Vancouver, ISO, and other styles
9

Maldivi, P., D. Guillon, A. M. Giroud-Godquin, et al. "Copper K edge EXAFS spectroscopy of the crystalline and columnar phases of copper (II) carboxylates." Journal de Chimie Physique 86 (1989): 1651–64. http://dx.doi.org/10.1051/jcp/1989861651.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Dyakova, Vanya, Hristina Spasova, Yoanna Kostova, Yana Mourdjeva та Georgi Stefanov. "EFFECT OF CU AS МINORITY АLLOYING ЕLEMENT ON GLASS FORMING ABILITY AND CRYSTALLIZATION BEHAVIOR OF RAPIDLY SOLIDIFIED AL-SI-NI RIBBONS". ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (13 червня 2023): 69–73. http://dx.doi.org/10.17770/etr2023vol3.7200.

Full text
Abstract:
The influence of copper as a minority alloying element in the process of rapid solidification of Al-Si-Ni ribbons produced by Chill Block Melt Spinning (CBMS) was investigated. XRD and TEM analyses proved a completely amorphous structure of the alloys Al74Ni16Si10 and (Al74Ni16Si10)98Cu2. The crystallization behaviour of these alloys was studied by DSC analysis. It was found that the crystallization of the amorphous alloys (Al74Ni16Si10)100-xCux, x=0, 2 runs in two steps. The temperatures Tx1 and Tx2 of each of the crystallization steps were determined. It was proven that the addition of 2 at.
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Copper crystalline phases"

1

Riviere, Lucie. "Methyl chloride cracking and formation of coke during the methylchlorosilanes synthesis." Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10189.

Full text
Abstract:
Pendant la synthèse de Müller-Rochow, le silicium (Si) et le chlorure de méthyle (CH3Cl) réagissent pour former des méthylchlorosilanes (MCS) en présence d'un précurseur de cuivre et de promoteurs Zn et Sn. Le CH3Cl peut subir des réactions de craquage qui entraînent la formation de composés carbonés (coke) perturbant le fonctionnement des réacteurs industriels, ce qui entraîne une perte de production. L'objectif de cette thèse était d'étudier le craquage du CH3Cl et la formation de coke pendant l'étape d'activation de la synthèse des MCS et de trouver des solutions industrielles pour prévenir
APA, Harvard, Vancouver, ISO, and other styles
2

Kokkaliaris, Stylianos. "Investigation of the vortex phase diagram and dynamics in single crystalline samples of the high temperature superconductor YBa←2Cu←3O←7←-←#delta#." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310294.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Copper crystalline phases"

1

LÓPEZ, Roberto, Jesús NAMIGTLE, and Jorge MASTACHE. "Structural characterisation of copper oxide by X-ray diffraction." In Handbooks Engineering Science and Technology TIX. ECORFAN, 2021. http://dx.doi.org/10.35429/h.2021.9.1.70.96.

Full text
Abstract:
In this work, the study of the structural characterization of copper oxide by the X-ray diffraction technique is presented. To obtain layers of copper oxide, sputtering and thermal oxidation techniques were combined. The average crystal size was calculated for the sputtered copper samples. For the copper oxide films obtained by thermal oxidation, both the crystal size and the texture coefficient were calculated. The crystalline quality was poor for layers obtained by sputtering. Thermal oxidation carried out on these films transformed its structure to the copper oxide phase known as cupric oxide.
APA, Harvard, Vancouver, ISO, and other styles
2

Kiose, Tatyana A., Tatyana L. Rakitskaya, Alim A. A. Ennan, and Alla S. Truba. "Palladium-Copper Catalyst Supported on Carbon Fiber Material for Oxidation of Carbon Monoxide by Air Oxygen." In Environmental and Technological Aspects of Redox Processes. IGI Global, 2023. http://dx.doi.org/10.4018/979-8-3693-0512-6.ch010.

Full text
Abstract:
The phase composition, textural, protolytic properties, and activity of catalysts for the carbon monoxide low-temperature oxidation based on two series of non-woven carbon fiber material samples CFM-I and CFM-II, and K2PdCl4, Cu(NO3)2, KBr basic components were studied in this work. Catalysts and CFMs were studied by XRD, SEM, FTIR spectroscopy, nitrogen ad/desorption, pH-metric, and atomic absorption spectrophotometry methods. It has been found that the basic components K2PdCl4 and Cu(NO3)2 deposited on a microporous carbon surface undergo changes and form an X-ray amorphous Pd0 phase and a paratacamite – Cu2(OH)3Cl crystalline phase. The catalysts were tested in the range of carbon monoxide initial concentrations from 50 to 300 mg/m3 with an effective contact time of the catalyst with the gas-air mixture from 0.12 to 0.50 s. Catalysts provide air purification from CO to concentrations below MPCCO (20 mg/m3) and can be used in respiratory devices.
APA, Harvard, Vancouver, ISO, and other styles
3

Marzouki, Amira, Ameni Brahmia, Riadh Marzouki, Mosbah Jemmali, Ismat H. Ali, and Mohamed Faouzi Zid. "Correlation between Structure, Electrical, and Magnetic Properties of Some Alkali-Oxide Materials." In Alkaline Chemistry and Applications. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102322.

Full text
Abstract:
In this chapter, the correlation between structure and electrical properties of Na2MP1.5As0.5O7 (MII = Co and Cu) are treated. The structural study shows that the cobalt and copper isotype materials can be crystallized in the tetragonal and monoclinic systems, respectively. The electrical study using impedance spectroscopy technique showed that these mixed diphosphate diarsenates are fast electrical conductors; however, the cobalt material exhibited more conductive property than the copper compound. In addition, the powder perovskite manganites La0.7M0.2M’0.1MnO3 (M = Sr, Ba and M’ = Na, Ag and K) have been prepared using the conventional solid-state reaction. The structural, magnetic, and magnetocaloric properties of these perovskite manganites compounds were studied extensively by means of X-ray powder diffraction (XRD) and magnetic measurements. These samples were crystallized in the distorted rhombohedral system with R3c space group. The variation of magnetization (M) vs. temperature (T) reveals that all compounds exhibit a second-order ferromagnetic to paramagnetic phase transition in the vicinity of the Curie temperature (TC). A maximum magnetic entropy change, ΔSMMax, of 4.07 J kg−1 K−1 around 345 K was obtained in La0.7Sr0.2Na0.1MnO3 sample upon a magnetic field change of 5 T. The ΔSMMax values of La0.7Ba0.2M’0.1MnO3 are smaller in magnitude compared to La0.7Sr0.2M’0.1MnO3 samples and occur at lower temperatures.
APA, Harvard, Vancouver, ISO, and other styles
4

Jemmali, Mosbah, and Lotfi Bessais. "Effect of M Substitution on Structural, Magnetic and Magnetocaloric Properties of R2Fe17-x Mx (R = Gd, Nd; M = Co, Cu) Solid Solutions." In Magnetic Skyrmions. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96299.

Full text
Abstract:
The structure, magnetic and magnetocaloric properties of Nd2Fe17−xCox (x = 0; 1; 2; 3, 4) and Gd2Fe17-xCux (x = 0, 0.5, 1 and 1.5) solid solutions have been studied. For this purpose, these samples were prepared by arc melting and subsequent annealing at 1073 K for a 7 days. Structural analysis by Rietveld method on X-ray diffraction (XRD) have determined that these alloys crystallize in the rhombohedral Th2Zn17-type structure (Space group R¯3 m) and the substitution of iron by nickel and copper leads to a decrease in the unit cell volume. The Curie temperature (TC) of the prepared samples depends on the nickel and copper content. Based on the Arrott plot, these analyses show that Nd2Fe17-xCox exhibits a second-order ferromagnetic to paramagnetic phase transition around the Curie temperature. These curves were also used to determine the magnetic entropy change ∆SMax and the relative cooling power. For an applied field of 1.5 T, ∆SMax increase from 3.35 J/kg. K for x = 0 to 5.83 J/kg. K for x = 2. In addition the RCP increases monotonously. This is due to an important temperature range for the magnetic phase transition, contributing to a large ∆SMax shape. Gd2Fe17-xCux solid solution has a reduction of the ferromagnetic phase transition temperature from 475 K (for x = 0) to 460 K (for x = 1.5) is due to the substitution of the magnetic element (Fe) by non-magnetic atoms (Cu). The magnetocaloric effect was determined in the vicinity of the Curie temperature TC. By increasing the Cu content, an increase in the values of magnetic entropy (∆SMax) in a low applied field is observed.
APA, Harvard, Vancouver, ISO, and other styles
5

A.H. Alzahrani, Hassan. "CuO and MWCNTs Nanoparticles Filled PVA-PVP Nanocomposites: Morphological, Optical, Dielectric, and Electrical Characteristics." In Carbon Nanotubes - Recent Advances, New Perspectives and Potential Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105810.

Full text
Abstract:
Copper dioxide (CuO) nanoparticles and multiwall carbon nanotubes (MWCNTs)-filled poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP) blend matrix (50/50 wt%)-based polymer nanocomposites (PNCs) have been prepared employing the solution-cast method. The X-ray diffraction explores the semicrystalline morphologies of these PNCs. The FTIR, SEM, and AFM measurements of PNCs expose the development of the miscible mix, polymer-polymer and polymer-nanoparticle interactions, and the influence of CuO and MWCNTs nanofillers on the morphology aspects on the main chain of PVA/PVP blend. The nanofiller loading for x = 14 wt% in the PVA–PVP blend matrix significantly enhances the crystalline phase, diminishing the optical energy gap to 2.31 eV. The DC conductivity is found to be maximum for x = 14 wt% loading concentration. The dielectric and electrical characteristics of these PNCs are investigated for an applied frequency range from 1 kHz to 1 MHz. The dielectric permittivity values increase substantially, owing to the decrease in the nano-confinement phenomenon at low frequency. The rise in applied frequency reduces dielectric permittivity and impedance values and enhances AC electrical conductivity. These PNCs having good dielectric and electrical characteristics can be used as frequency tunable nano-dielectric material in electronic devices.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Copper crystalline phases"

1

Soylu, E., and G. Tranell. "Melting behaviour investigation of municipal solid waste incineration fly ash samples from different incineration technologies for metal recovery – an integrated experimental and thermodynamic modelling." In 12th International Conference of Molten Slags, Fluxes and Salts (MOLTEN 2024) Proceedings. Australasian Institute of Mining and Metallurgy (AusIMM), 2024. http://dx.doi.org/10.62053/sqtv9191.

Full text
Abstract:
Municipal solid waste incineration fly ash (MSWI FA) is an important waste product that holds considerable potential for valourisation. In addition to major phases such as CaSO4, CaCO3, NaCl, KCl, and silicates, these ashes contain significant amounts of valuable elements like copper (Cu), zinc (Zn), lead (Pb), and others, where the specific composition depends on the source of the waste and the incineration process used. This study aims to investigate the melting behaviour of municipal MSWI FA samples from various incineration technologies, including rotary kiln, grate furnace, and circular f
APA, Harvard, Vancouver, ISO, and other styles
2

Yevdokymenko, Yuriy, Mykola Iefimov, Gennadii Frolov, and Kateryna Iefimova. "Properties of HVAF-coatings from Al-Cu-Fe quasicrystalline alloy." In IXth INTERNATIONAL SAMSONOV CONFERENCE “MATERIALS SCIENCE OF REFRACTORY COMPOUNDS”. Frantsevich Ukrainian Materials Research Society, 2024. http://dx.doi.org/10.62564/m4-yy1802.

Full text
Abstract:
Alloys of Al-Cu-Fe system containing quasicrystalline ψ-phase are perspective as thermal barrier, wear-resistant, corrosion-resistant and anti-adhesion coatings. Typically, such alloys are compositions of quasicrystalline and crystalline metallic phases, making them similar to metal ceramics [1]. Until now, high quality thermal spraying coatings from alloys containing ψ-phase more than 70 %(mass) have not been obtained due to its low plasticity at temperatures up to 500°C, phase transition to λ-phase and β-phase at 880°C and narrow area of existence in the diagram of states. The spraying was c
APA, Harvard, Vancouver, ISO, and other styles
3

Patel, Sanjay, and K. K. Pant. "Hydrogen Production for PEM Fuel Cells via Oxidative Steam Reforming of Methanol Using Cu-Al Catalysts Modified With Ce and Cr." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97209.

Full text
Abstract:
The performance of Cu-Ce-Al-oxide and Cu-Cr-Al-oxide catalysts of varying compositions prepared by co-precipitation method was evaluated for the PEM fuel cell grade hydrogen production via oxidative steam reforming of methanol (OSRM). The limitations of partial oxidation and steam reforming of methanol for the hydrogen production for PEM fuel cell could be overcome using OSRM and can be performed auto-thermally with idealized reaction stoichiomatry. Catalysts surface area and pore volume were determined using N2 adsorption-desorption method. The final elemental compositions were determined usi
APA, Harvard, Vancouver, ISO, and other styles
4

El Hasadi, Yousef M. F., and J. M. Khodadadi. "Numerical Simulation of Solidification of Colloidal Suspensions Inside a Differentially-Heated Cavity." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17594.

Full text
Abstract:
Development of the solid-liquid interface, distribution of the particle concentration field, as well as the development of thermo-solutal convection during solidification of colloidal suspensions in a differentially-heated cavity is investigated. The numerical model is based on the one-fluid-mixture approach combined with the single-domain enthalpy-porosity model for phase change. The linear dependence of the liquidus concentration of the nanoparticles was assumed. A colloidal suspension consisting of water and copper, and alumina nanoparticles were considered. In the current investigation, th
APA, Harvard, Vancouver, ISO, and other styles
5

Ratnawulan, Ahmad Fauzi, and Sukma Hayati AE. "Effect of calcination temperature on phase transformation and crystallite size of copper oxide (CuO) powders." In THE 4TH INTERNATIONAL CONFERENCE ON RESEARCH, IMPLEMENTATION, AND EDUCATION OF MATHEMATICS AND SCIENCE (4TH ICRIEMS): Research and Education for Developing Scientific Attitude in Sciences And Mathematics. Author(s), 2017. http://dx.doi.org/10.1063/1.4995173.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Umbelino Gomes, Uilame, Kívia Fabiana Galvão de Araújo, Maria José Santos Lima, Vitor Manoel Silva Fernandes De Souza, Cléber da Silva Lourenço, and Rafael Alexandre Raimundo. "Study Of The Influence Of Milling Time On The Synthesis Temperature Of Monoclinic And Orthorhombic Nanostructured Cunb2o6 Via High-Energy Milling." In Euro Powder Metallurgy 2023 Congress & Exhibition. EPMA, 2023. http://dx.doi.org/10.59499/ep235765398.

Full text
Abstract:
Copper niobate (CuNb2O6) has been studied for technological and environmental applications, such as in solar cells and photocatalysts, for example. And to make the application of CuNb2O6 even more feasible, in this study, therefore, high-energy milling was applied in its synthesis process with variation in the milling time, from the precursor powders Nb2O5 and CuO. The calcination occurred in a muffle with temperatures in the range of 500 °C to 1000 °C, for 3 h and heating rate of 5 °/min. Then, the powders were characterized by XRD, SEM, EDS and Raman. The powders showed crystallite sizes sma
APA, Harvard, Vancouver, ISO, and other styles
7

Wang, Yana, Jane H. Davidson, and Lorraine F. Francis. "Scaling in Polymer Tubes Used in Solar Water Heating Systems." In ASME 2004 International Solar Energy Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/isec2004-65056.

Full text
Abstract:
An experimental study of the growth of calcium carbonate (commonly termed scaling) on copper, nylon 6,6, semiaromatic high temperature nylon, polypropylene, polybutylene, and Teflon tubes exposed to hard water is presented. The objective of the study is to gain qualitative information on the scaling of polymer tubes in nonisothermal, flowing conditions expected in heat exchangers and solar absorbers. The 89-cm long tubes were placed in tube-in-shell heat exchangers. Water prepared from 10 °C tap water with a total calcium concentration of 4×10−3 M, and a pH of 9.0 was pumped through the tubes
APA, Harvard, Vancouver, ISO, and other styles
8

Fan, Jinsheng, David Gonzalez, Jose Garcia, Brittany Newell, and Robert A. Nawrocki. "The Effects of Additive Manufacturing and Electric Poling Techniques on PVdF Thin Films: Towards 3D Printed Functional Materials." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2245.

Full text
Abstract:
Abstract Mechanical flexibility, faster processing, lower fabrication cost and biocompatibility enable poly (vinylidene fluoride) (PVdF) to have a wide range of applications. This work investigated the use of a piezoelectric polymeric material, PVdF, in combination with 3D printing, to explore new strategies for the fabrication of smart materials with embedded functions, namely sensing. The motivation behind this research was to design and fabricate PVdF thin films that will be used to build pressure sensors with applications in active intelligent structures. In this work, 3D printed PVdF thin
APA, Harvard, Vancouver, ISO, and other styles
9

Swalla, Dana R., and Richard W. Neu. "Role of Misorientation in Assessing Fretting Damage." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63313.

Full text
Abstract:
The primary focus of the current work is to develop quantifying measures that can describe the evolution of fretting damage at the microstructural scale in a dual phase Ti-6Al-4V as well as two single phase materials: commercially pure titanium (CP-Ti), which consists of pure alpha-phase titanium, and a near alpha Ti-5Al-2.5Sn. It is important to understand deformation behavior at the microstructural scale in heterogeneous materials because features at this scale, such as grain size, crystallographic orientation, and phase distribution, strongly influence crack development and are dimensionall
APA, Harvard, Vancouver, ISO, and other styles
10

Kapat, Jay, Umit Kursun, George Wayne Finger, et al. "Nanoscale Thermal Management With Gas-Cooling." In ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2007. http://dx.doi.org/10.1115/icnmm2007-30161.

Full text
Abstract:
Nanoscale thermal management (NSTM) will become imperative as power density of IC’s increases further or as 3-dimensional IC’s are introduced. Such NSTM solutions must be integrated with the IC’s to be effective. It can be envisioned that an ideal NSTM solution will involve two-phase flow, liquid flow and gas flow. This paper focuses on gas flow, both as a fundamental thermal management technique in any future NSTM solution, and also as a basis for understanding more complex liquid and two-phase flow techniques that may also be involved in any NSTM solution. Heat removal by gaseous flow in any
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!