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Dissertations / Theses on the topic 'Multilayered coatings'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Santos, da Silva Cruz Ricardo Manuel. "TiB2 ceramic and DLC multilayered PVD coatings." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/1863.

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Titanium diboride (TiB2) has been investigated as a potential candidate for several industrial applications, such as: cutting tools, electric devices, wear parts and many more fields of application. The main drawback of TiB2 is its brittle nature, which has limited its range of applications. Diamond-like Carbon (DLC) has been used in industrial applications, mainly for wear resistant parts. However, the application of DLC films has been limited by the level of internal stress accumulated during deposition. This thesis investigates the deposition of TiB2/DLC multilayer wear resistant coatings t

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2

Silva, Cruz Ricardo Manuel Santos da. "TiBâ‚‚ ceramic and DLC multilayered PVD coatings." Thesis, Cranfield University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443347.

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3

Ahmed, Omer. "Tribological and Mechanical properties of Multilayered Coatings." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501763970144729.

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4

Salgueiredo, Ermelinda da Conceição Portela. "Multilayered micro/nanocrystalline CVD diamond coatings for biotribology." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13465.

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Doutoramento em Ciência e Engenharia de Materiais<br>In the present work multilayered micro/nanocrystalline (MCD/NCD) diamond coatings were developed by Hot Filament Chemical Vapour Deposition (HFCVD). The aim was to minimize the surface roughness with a top NCD layer, to maximize adhesion onto the Si3N4 ceramic substrates with a starting MCD coating and to improve the mechanical resistance by the presence of MCD/NCD interfaces in these composite coatings. This set of features assures high wear resistance and low friction coefficients which, combined to diamond biocompatibility, set thi

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Shabani, Mohammadmehdi. "Tribosystems based on multilayered micro/nanocrystalline CVD diamond coatings." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16855.

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Doutoramento em Ciência e Engenharia de Materiais<br>A combinação das características do diamante microcristalino (MCD) e nanocristalino (NCD), tais como elevada adesão do MCD e a baixa rugosidade superficial e baixo coeficiente de atrito do NCD, é ideal para aplicações tribológicas exigentes. Deste modo, o presente trabalho centrou–se no desenvolvimento de revestimentos em multicamada MCD/NCD. Filmes com dez camadas foram depositados em amostras de cerâmicos de Si3N4 pela técnica de deposição química em fase vapor assistida por filamento quente (HFCVD). A microestrutura, qualidade do diamante

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Luk-Cyr, Jacques. "Experiments and modeling of multilayered coatings and membranes : application to thermal barrier coatings and reverse osmosis membranes." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/93822.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 153-157).<br>In this thesis, I developed a novel methodology for characterizing interfacial delamination of thermal barrier coatings. The proposed methodology involves novel experiments-plus numerical simulations in order to determine the material parameters describing such failure when the interface is modeled using traction-separation constitutive laws. Furthermore, a coupled fluid-permeation and large deformat

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Nekkanty, Srikant. "Characterization of damage and optimization of thin film coatings on ductile substrates." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1238182704.

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8

Бондар, Олександр В`ячеславович, Александр Вячеславович Бондарь, Oleksandr Viacheslavovych Bondar, et al. "Structure and Mechanical Properties of Multilayered Nanostructured TiN/ZrN Ion-plasma Coatings." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42763.

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Multilayered coatings based on TiN/ZrN with different thickness of bilayers were deposited on steel substrates using vacuum arc deposition of a cathodes (C-PVD method). Thickness of bilayer strongly depended on deposition conditions and varied in the range 39 – 305 nm, total thickness of the coatings were 11-19 μm. Mechanical and tribotechnical characteristics of the coatings were investigated in the paper as well as its microstructure. Influence of the bilayer thickness on the properties of the coatings were explored.

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9

Hendricks, Troy Richard. "Polyelectrolyte multilayer coatings for conductive nanomaterials patterning and anti-wrinkling applications." Diss., Connect to online resource - MSU authorized users, 2008.

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10

Beresnev, V. M., O. V. Sobol’, Олександр Дмитрович Погребняк, et al. "About Peculiarities of the Influence of the Negative Bias Potential Applied to the Substrate During the Deposition Process on the Structural State and Properties of the Multilayer system MoN-CrN." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42799.

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Applying transition metal nitrides of Mo and Cr, which are characterized by a relatively low heat of formation, as the components of the multilayer coating, the possibilities of elemental and structural engineering of vacuum-arc coatings under the influence of the bias potential Us and the reaction gas pressure PN are revealed. It was found that at a relatively small thickness of the layers of nanometer range, which provides superhard state of the coatings, the supply of Us with the value of above the critical leads to a drop in hardness, which can be explained by mixing of layers at the inter

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Yajid, Muhamad Azizi Mat. "Chemical Mapping Techniques for Nanoscale Multilayer Coatings." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515480.

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12

Davock, Helen Jane. "Analysis of multilayer coatings by electron microscopy." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366423.

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13

Laborda, Cabo Andreu. "Fatigue of multilayer coatings for plain bearings." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/425926/.

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The work described in this thesis considers the fundamental fatigue behaviour exhibited by multilayer coatings used in plain bearings. Modern plain bearing designs comprise a number of layers with very different mechanical properties in order to accommodate dissimilar requirements such as load capacity and embeddability. Due to the evolution of modern internal combustion engines, power output has dramatically increased, increasing the loads that plain bearings have to support. Therefore, bearings have also evolved becoming more sophisticated but also more complex, comprising micrometre multi-l

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14

Halthur, Tobias. "Multilayer Structures for Biomaterial Applications : Biomacromolecule-based Coatings." Doctoral thesis, KTH, Chemistry, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-551.

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<p>The cellular response to a biomaterial, such as a dental implant, is mainly governed by the surface properties, and can thus be altered by the introduction of a surface coating. In this thesis the buildup of a biomacromolecule-based coating formed by layerby-layer (LbL) deposition of the charged polypeptides poly(L-lysine) (PLL) and poly(L-glutamic acid) (PGA) has been studied. In an attempt to make these coatings bioactive and useful for bone-anchored implants, an amelogenin protein mixture (EMD), has been immobilized in these thin polyelectrolyte multilayer (PEM) films. Multilayers were a

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BELTRAMI, MARCO. "Nanostructured Multilayer Ceramic Coatings for Wood-Cutting Tools." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3030739.

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Lo sviluppo di questo dottorato di ricerca è stato supportato e finanziato dal progetto europeo Interreg ITA-SLO NANOREGION. La missione del progetto NANOREGION consiste nel costituire un consorzio tra università ed enti di ricerca locali atti a fornire una piattaforma scientifica di supporto alle imprese del territorio comprensivo delle regioni dell'Italia nord-orientale e la Slovenia. In tali regioni, l'impatto economico-sociale dell'industria del legno è rilevante. È noto che nella manifattura di materiali legnosi la necessità di una frequente sostituzione degli utensili da lavorazione, nec

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Silva, Maria de Fatima Oliveira Vales de. "Multilayer TiBâ†2/X hard coatings by sputtering deposition." Thesis, Cranfield University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284875.

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Burgmann, Flame Astra, and f. burgmann@usyd edu au. "Nanostructured Multilayer Coatings of Aluminium and Aluminium Oxide with Tungsten." RMIT University. Applied Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080424.135857.

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The development of nanostructured coatings which exhibit enhanced mechanical properties is currently of interest due to the importance of high performance coatings in a large range of applications. Single layer coatings have predominantly been used for these demanding applications, however the promising mechanical properties observed in multilayer coatings has shifted the focus of current research. In particular, there has been reports of the use of alternating materials with opposing mechanical properties, as seen in the abalone shell, which have exhibited hardness and toughness values signif

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18

Zhou, Zhaoxia. "Oxidation and wear of TiAlN/VN multilayer PVD hard coatings." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557419.

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TiAlN/VN multilayers, with a layer periodicity of ~3nm, have exhibited superior sliding wear resistance (1.26xlO-17m3N-lm-l) and lower friction coefficient (~=0.4, pin-on-disc test, Ah03 ball counterpart) when compared to other commonly used wear protective coatings, e.g. TiN, TiAlN and TiAlN/CrN. They require excellent oxidation and wear resistance for dry high speed machining operations. This project investigates the microstructure of the as-deposited coatings, their oxidation degradation mechanism and their wear and friction properties at room and elevated temperatures. The microstructure o

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Tan, Wui Siew. "Strategies for incorporating functional block copolymers into polyelectrolyte multilayer coatings." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/69794.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>This thesis explores the creation of thin film responsive hydrogel coatings via Layer-by Layer assembly (LbL) of temperature (T) responsive block copolymer - polyelectrolyte multilayers (PEMs). First, the LbL conditions that allow for temperature driven, large, reversible swelling transitions of multilayer constructs are determined. Use of weak polyelectrolyte components and selection of an appropriate depo

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Ovcharenko, A. P., V. I. Bilozertseva, D. A. Gaman, and L. Durdyeva. "Simulation of Broadband Antireflection Coatings at Oblique Incidence of Light." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42809.

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The results of simulation of optical characteristics of antireflection coatings with continuously changing refractive index are presented. The features of enlightenment at oblique light incidence are considered. The possibilities for the simultaneous enlightenment of S- and P- polarization component of the incident light are investigated.

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Bell, Bryan Frederick Jr. "Functionally graded, multilayer diamondlike carbon-hydroxyapatite nanocomposite coatings for orthopedic implants." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7962.

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Fry, Christopher. "Development of magnesium-based multilayer PVD coatings for hydrogen storage applications." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/14064/.

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On the long list of solid-state hydrogen storage materials, magnesium hydride stands out for its relatively high hydrogen storage capacity of 7.7 wt%, combined with the low cost and abundance of magnesium. For practical applications however, issues such as the slow kinetics and the high stability of magnesium hydride must be resolved in order to reduce the potential operating temperatures of a magnesium-based solid-state hydrogen storage system. Catalysis has been widely used to improve the hydrogen storage kinetics and thin film techniques have been used to explore novel structures and combin

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Mackey, Christopher Paul. "Laser calorimetric studies of optical absorption in all dielectric multilayer coatings." Thesis, Queen's University Belfast, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334587.

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Reinhard, Christina. "CrAlN-based nanoscale multilayer coatings dedicated to wear and oxidation protection." Thesis, Sheffield Hallam University, 2007. http://shura.shu.ac.uk/20272/.

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This study explores the wear and oxidation resistance of novel CrAlYN/CrN nanoscale multilayer coatings grown by a combined high power impulse magnetron sputtering (HIPIMS) / unbalanced magnetron (UBM) sputtering process. Firstly, it is found that a HIPIMS substrate etching pre-treatment prior to the coating deposition effectively removes contaminants from the substrate surface and provides the base for epitaxial growth. Subsequently, an improvement in the adhesion and the tribological performance of CrAlYN/CrN is observed compared to coatings pre-treated with a conventional cathodic arc pre-t

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Savisalo, Tuukka S. "Enhancing the tribological properties of CrN/NbN nanoscale multilayer PVD coatings." Thesis, Sheffield Hallam University, 2008. http://shura.shu.ac.uk/20329/.

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This research developed a CrN/NbN coating with promising properties for tribological applications where corrosion plays a big role. Building on this knowledge base a novel approach to the surface treatment was selected, in which multiple layers, each chosen for a specific purpose, were optimised to combine the best properties of each. In this approach a careful consideration of macro- and microstructure of each layer is required in order to extract the good properties of each layer while eliminating the negative ones. It was shown in the work that, if such consideration is neglected, a catastr

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Bell, Bryan Frederick. "Functionally graded, multilayer diamondlike carbon-hydroxyapatite nanocomposite coatings for orthopedic implants." Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-06072004-131058/unrestricted/bell%5Fbryan%5Ff%5F200405%5Fms.pdf.

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Xiao, Zhigang. "Synthesis of Functional Multilayer Coatings by Plasma Enhanced Chemical Vapor Deposition." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1081456822.

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Pererva, V. I., T. Y. Gorbacheva, Тетяна Павлівна Говорун, Татьяна Павловна Говорун, and Tetiana Pavlivna Hovorun. "Multilayer wearresistant coverages based on mon/crn, tin/zrn for wares of mechanical engineering and cutting instrument." Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/66645.

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Today, the rapid development of the industry uses new materials for cutting tools. Besides the production of new types of solid high-speed steel and alloys, focuses on strengthening and surface protection products different surfaces. One of the main trends in this area is to develop wear-resistant coatings and their application to cutting tools [1], watches with PVD-coated, glasses with gold frames and others. This is made possible by the application as coating materials based on Ti and Zr, Mo and Cr on the use of technology in active gas mixture of nitrogen N [2].

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Погребняк, Олександр Дмитрович, Александр Дмитриевич Погребняк, Oleksandr Dmytrovych Pohrebniak, et al. "Obtaining of TiN/MoN Nanocomposite Coatings and Their Research." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35415.

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At the nanometer scale multilayer nanostructured coatings show special properties due to the depositions conditions. This paper presents results of TiN/MoN nanocomposites obtaining and their research. Multilayer coatings based on TiN/MoN were deposited using vacuum arc evaporation cathode method (CPVD). Total thickness range of obtained coatings was 2, 10, 20 and 40 nm. We used vacuum-arc device “Bulat-6” for coatings deposition. Structure and properties of multilayer coatings were analyzed using XRD (Bruker D-8 Advance) in Cu-Kα radiation, high resolution transmission electron microscopy

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Belov, D. S., A. O. Volkhonsky, Blinkov I. V, E. A. Skryleva, and J. Michalski. "Multilayer Nanostructured Wear-Resistant Coatings with Increased Thermal Stability, Adapted to Varying Friction Conditions." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35318.

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The work covers studying of influence of indexes of an ion-plasma vacuum-arc deposition method to the structure, composition and properties of Ti-Al-N/Zr-Nb-N/Cr-N multilayer nanostructured coatings (MNC). The average crystallites size within the layers is about 5-10 nm. Received coatings are featured by absence of any change in the composition and properties after heating up to 1000 ºС, the coatings hardness is up to 36,6GPa, Young's modulus of elasticity is up to 580 GPa, plastic work of deformation is up to 64 %, adhesive strength is about 100 N and coefficient of friction is 0,45. Whe

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Goat, Christopher. "Erosion resistance in metal - ceramic multilayer coatings for gas turbine compressor applications." Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/10717.

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The erosion resistance of 50 m metal-ceramic multilayer coatings has been investigated under impact conditions comparable to those in a gas turbine compressor cascade. lt was possible to improve upon the erosion resistance of Ti-6Al-4V by a significant margin. The influence of layer mechanical properties, layer thickness, ceramic content and coating process on erosion resistance has been studied over a range of impact conditions. The most suitable coating formulation for maximum erosion resistance changed with particle impact energy. Under low energy impact conditions (<55 joules) coatings wit

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Fedulova, Elena [Verfasser], and Ferenc [Akademischer Betreuer] Krausz. "Development of dielectric multilayer coatings for ultrafast oscillators / Elena Fedulova ; Betreuer: Ferenc Krausz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1119073359/34.

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Chen, Keming. "Electodeposition of compositionally modulated tin-cobalt alloy multilayer coatings as plain bearing overlays." Thesis, Loughborough University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443952.

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Cross, Samuel R. (Samuel Robert). "Computational modeling and design of multilayer corrosion coatings for galvanic protection of steel." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103269.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, February 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 140-146).<br>Steels represent an economically vital class of alloys for use in structural applications, due to low cost and high strength and toughness, but often suffer from high susceptibility to corrosion in relevant environments. Use of metallic coatings, particularly zinc alloys, has long been a widely employed method for corrosion protection of steel, by acting both as a physical barri

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OLIVA, GAETANA CRISTIANA. "In-situ determination of mechanical failure modes in thin mono- and multilayer coatings." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2502263.

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Mechanical properties such as fracture strength and fracture toughness of thin films obtained from Physical Vapour Deposition are difficult to evaluate since the relative small dimension of such coatings. Furthermore, the fracture modes are not well understood yet. In this thesis novel techniques have been used in order to fill the lack of information about mechanical properties of hard thin coatings. In-situ bending tests were carried out in order to study the fracture strength. The evaluation of such property and the modes of fracture were studied via direct observation inside the Scanning E

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Bhattarai, Khagendra Prasad. "Interference of Light in Multilayer Metasurfaces: Perfect Absorber and Antireflection Coating." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6680.

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We have studied several metamaterials structures with multiple layers by explaining them theoretically and verifying experimentally. The engineered structures we have designed work either as a perfect absorber or antireflection coating. The multilayer model as we call it Three Layer Model (TLM) has been developed, which gives the total reflection and transmission as a function of reflection and transmission of individual layers. By manipulating the amplitude and phase of the reflection and the transmission of the individual layers, we can get the required functionality of the optoelectronic de

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Kok, Yin Nan. "Nanoscale multilayer Me-graphite coatings grown by combined steered cathodic arc/unbalanced magnetron sputtering." Thesis, Sheffield Hallam University, 2005. http://shura.shu.ac.uk/19926/.

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Low friction, nanoscale multilayer carbon/chromium (C/Cr) coatings were successfully deposited by the combined steered cathodic arc/unbalanced magnetron sputtering technique (also known as Arc Bond Sputtering or ABS) using a Hauzer HTC 1000-4 PVD coater. The work described in this thesis has been directed towards understanding the effect of ion irradiation on the composition, microstructure, and functional properties of C/Cr coatings. This has been achieved by varying the bias voltage, U[B], over a wide range between -65 V and -550 V. C/Cr coatings were deposited in three major steps: (i) Cr+

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Ji, Ran. "Development and characterisation of nano-multilayer CrAlSiN coating systems for cutting tools." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4254/.

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Two types of CrAlSiN nano-multilayer coating were designed and synthesised on AISI M2 high speed steel. Selected coatings were also deposited on pre-nitrided M2 substrate to investigate the effect of duplex treatment. A series of type I CrAlSiN coatings, which have sharp interfaces between individual nano-layers, were designed with varying bilayer thickness. An fcc and an hcp phase were identified for all type I coatings, and it has been found that the bilayer thickness has a significant influence on the orientation of both phases, which in turn affects their mechanical properties. Type II CrA

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Кравченко, Ярослав Олегович, Ярослав Олегович Кравченко та Yaroslav Olehovych Kravchenko. "Структура та властивості багатошарових та багатоелементних покриттів нанометрового масштабу на основі (TiAlSiY)N/MeN (Me=Mo, Cr, Zr)". Thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/77077.

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Дисертаційна робота присвячена виявленню особливостей процесів синтезу, елементного і фазового складу, субструктури та властивостей багатоелементних та багатошарових покриттів нанометрового масштабу (TiAlSiY)N/MeN (Me=Mo, Cr, Zr), що синтезуються методом вакуумно-дугового осадження. Здійснено визначення зв'язків між структурою та механічними і трибологічними властивостями покриттів. Встановлено, що склад і кристалічна структура багатоелементних нітридних шарів в одношарових і багатошарових покриттях подібні: формуються тверді розчини на основі кубічного TiN з кристалічною граткою типу NaCl

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Sailer, Miloslav. "Design and application of combinatorial polyelectrolyte multilayer coatings for the study of cell-material interactions." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119552.

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The knowledge of how cells interact with man-made materials is crucial for the design of specialized biomaterials. These interactions are mainly based on the physical properties of that material. In order to study the effect of these properties, polyelectrolyte multilayers were used: these are coatings able to mask any material, which are carefully built from the bottom up using the layer-by-layer technique. The biologically relevant physical properties of these coatings are tuneable by altering conditions of their build up, such as the pH and/or salt concentration. Initially, multilayers o

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Metzman, Jonathan Seth. "Nanoparticle Encapsulation and Aggregation Control in Anti-reflection Coatings and Organic Photovoltaics." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85580.

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Nanoparticles present a myriad of physical, optical, electrical, and chemical properties that provide valuable functionality to thin-film technologies. In order to successfully exploit these aspects of nanoparticles, appropriate dispersion and stability measures must be implemented. In this dissertation, different types of nanoparticles are coated with polymer and metallic layers to enable their effectiveness in both anti-reflection coatings (ARCs) and organic photovoltaics (OPVs). Ionic self-assembled multilayers (ISAMs) fabrication of poly(allylamine hydrochloride) (PAH) and silica nanopart

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Lih-YangChiu and 邱立洋. "High Temperature Multilayered W-HfO2-x Solar Absorber Coatings." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/9ek35e.

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碩士<br>國立成功大學<br>材料科學及工程學系<br>107<br>Tungsten-doped Hafnium oxide (W-HfO2-x) coatings were deposited using RF and DC reactive magnetron co-sputtering techniques. Stainless steel (5 x 5 cm) was used as substrates for solar absorber W-HfO2-x coatings. In this works, various deposition parameters including sputtering power, O2 flow rate, and deposited time were investigated. The resulting coatings therefore exhibit various compositions, crystal structures, grain sizes, and thicknesses. The obtained coatings were examined using, field emission scanning electron microscopes (FE-SEM), transmission el

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Cheng, Chih-Ming, and 鄭智銘. "Wettability investigation of multilayered hard coatings on optical glass molds." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/n9per5.

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碩士<br>明道大學<br>材料科學與工程學系碩士班<br>98<br>Glass molding technology is considered to be the most likely candidate to successfully produce high resolution and stability aspherical glass lenses in vast volumes. This study reports upon the deposition of CrAlSiN/CrN, TiAlSiN/TiN and AlTiN/CrN multilayer nanofilms through the use of cathodic arc deposition. When using a tungsten carbide coated substrate mold, the mold modifies the surface of the glass. The high temperature wetting of a Sumita Optical Glass K-PG325 ball was studied by contact angle measurements. These measurements were used to explore the

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Cui, Hai-Ning. "Preparation and characterization of optical multilayered coatings for smart windows applications." Doctoral thesis, 2005. http://hdl.handle.net/1822/3341.

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Tese de doutoramento em Ciências<br>Multilayer films with a tungsten oxide (WO3) layer were deposited by reactive dc magnetron sputtering onto glass substrates for electrochromic (EC) applications. The configuration of the smart EC devices (ECDs) or window is ITO (Indium-tin-oxide)/WO3/Li+electrolyte/counter electrode film/ITO. Depending on the choice of different counter electrodes such as SnO2, V2O5, ZrO2 and the doped Mo (or Fe) films, a total of 15 different window structures were fabricated and studied. The multilayer ECD between two pieces of glass exhibited maximum optical transmittance

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Lai, Hsing-Ming, and 賴興銘. "Microstructure Characterization and Mechanical Properties of Multilayered AlCrSiN/TiVN Hard Coatings." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/g4962r.

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碩士<br>國立虎尾科技大學<br>機械與電腦輔助工程系碩士班<br>102<br>Transition metal nitrides, such as TiN and CrN, have been used as protective hard coatings due to their excellent tribological properties. In this study, multilayered AlCrSiN/TiVN coatings were synthesized by cathodic-arc evaporation. The coatings were deposited onto high-speed steels, tungsten carbides and silicon wafers for evaluation. Ti, TiV and CrAlSi alloy cathodes were used for the deposition of AlCrSiN/TiVN coatings. During the coating process of multilayered AlCrSiN/TiVN, TiN was deposited as an interlayer to enhance adhesion strength between

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Chang, Hung, and 張弘. "Mechanical Properties and Cutting Performance of Multilayered TiVN/TiSiN Hard Coatings." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/34gy84.

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碩士<br>國立虎尾科技大學<br>機械與電腦輔助工程系碩士班<br>104<br>Ternary transition metal nitrides, such as TiSiN and TiVN, have been attracting great interest for industrial applications as hard protective coating materials due to their high hardness, wear resistance, tribological properties. In this study, multilayered TiVN/TiSiN coatings were deposited by Cathodic-arc evaporation (CAE) system. During the coating process of TiVN/TiSiN, TiN was deposited as an interlayer to enhance adhesion strength between the coatings and substrates. By controlling the different negative bias voltages (30 ~ 180Volts), the multila

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Hung, Jui-Pin, and 洪瑞彬. "Oxidation Behavior and Mechamical Properties of Multilayered AlCrSiN/TiVN Hard Coatings." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/e7ayw9.

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碩士<br>國立虎尾科技大學<br>機械與電腦輔助工程系碩士班<br>103<br>The experiment using cathodic arc evaporation deposition system AlCrSiN/TiVN multilayer film, the use of Ti target, AlCrSi target, and TiV target. Using TiN film as a interlayer increases the adhesion, re-use AlCrSi target and TiV target target the relative position of timber design multilayer film structure, and finally change the turret speed (1rpm, 2rpm, 4rpm) of its thickness period on the mechanical properties and oxidation behavior . For the mechanical properties of the film section, use this lab tester for Rockwell indentation test basic film a

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CHAO, LIANG-CHAN, and 趙良展. "Mechanical Properties and Cutting Performance of Multilayered AlTiN/CrTiSiN Hard Coatings." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/3u8sw7.

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碩士<br>國立虎尾科技大學<br>機械與電腦輔助工程系碩士班<br>107<br>Transition metal nitride coatings based on Cr, Ti and Al, such as AlTiN, AlCrN and AlCrSiN, have been used as protective coating materials of cutting and forming tools due to their high hardness and thermal stability. In this study, AlTiN and AlCrSiN and AlTiCrSiN coatings were deposited onto tungsten carbide tools using AlTi, TiSi, Cr and ternary AlCrSi alloy targets in a Cathodic-arc evaporation (CAE) system. Optimal design of interlayers of the AlCrSiN and AlTiCrSiN can offer an efficient way of controlling residual stress, improving adhesion streng

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Tsai, Shan-Ho, and 蔡善合. "Microstructure Characterization, Mechanical and Corrosion Properties of nano-multilayered CrAIN/SiNx Coatings." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/52459429727667253146.

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碩士<br>國立清華大學<br>材料科學工程學系<br>97<br>本研究採以兩種具高性能之氮化鉻鋁與氮化矽，以反應性磁控濺鍍系統沈積調變各層不同厚度的奈米多層氮化鉻鋁/氮化矽薄膜。實驗的結果顯示，多層膜中氮化矽層的厚度會影響氮化矽層的晶體結構以及多層膜的硬度。當氮化鉻鋁層厚度為4.0 nm、氮化矽層厚度為0.4 nm時，奈米多層膜中的氮化矽轉變成介穩態與氮化鉻鋁所形成的契合界面產生硬度提升高達33 GPa。隨著氮化矽層厚度的增加至0.7 nm，氮化矽層轉變成非晶結構並阻斷了多層膜的契合生長，使得多層膜的硬度迅速降低。實驗的結果也顯示，多層膜中氮化矽層的厚度控制氮化矽層的晶體結構從而改變多層膜的微結構並影響其抗腐蝕性質。當氮化矽為結晶態時會與氮化鉻鋁契合生長，晶粒穿過若干個週期厚度連續成長並形成柱狀晶結構。反之，當氮化矽為非晶態時會阻斷柱狀晶的成長，形成非常緻密的結構，同時，也阻擋了腐蝕性離子藉由晶界擴散至基材發生腐蝕的通道，進而提升抗腐蝕的效果。另外，本研究也藉由控制各層厚度達到控制成分，並控制氮化矽層的厚度控制多層膜微結構，從而設計兩組具有相同成分卻不同微結構的多層膜，排除成分的影響之後，實驗結果得知，使微結構緻密化的確對於抗腐蝕效果有明顯的提升。

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Su, Siang-Chun, and 蘇湘淳. "Study the mechanical properties and impact resistance of CrN/AlN multilayered coatings." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/00614641965457683796.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程研究所<br>103<br>CrN/AlN multi-layer coatings perform excellent wear, oxidation resistance properties and high hardness, respectively.The multilayer coatings can improve the problem of fracture toughness, effectively increase the fracture toughness and to hardness.In industrial applications, continuous stamping, die under the reciprocating dynamic loading cause decrease life of the punch. A sputtering punch can improve the tool life because the rasing of impact resistance .In this study, properties of CrN / AlN multi-layer coatings deposited by the unbalanced magnetron

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