Дисертації з теми "Spray coatings"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Spray coatings".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Popa, Gabriela. "Spray-on hybrid nanoscale coatings." Strasbourg, 2010. https://publication-theses.unistra.fr/public/theses_doctorat/2010/POPA_Gabriela_2010.pdf.
Повний текст джерелаHybrid thin films were prepared by a modified variant of the classical Layer-by-Layer (LbL) deposition method. Inorganic coatings are deposited using the consecutive spray method, in which aqueous solutions are alternatingly sprayed for short times (less than 5 seconds). Numerous inorganic coatings were prepared this way such as calcium phosphate, calcium fluoride, calcium oxalate, silver chloride, Prussian Blue. The main target of the hybrid films comprised of calcium phosphate and Collagen is for application in the cartilage repair. “Sandwich”-like structures of these components mimic the natural articular cartilage structure. In order to obtain the hybrid film containing Collagen and calcium phosphate, we used a (PAHPSS)barrier film. The deposition of inorganic coating can also be realized using the simultaneous spraying method where both solutions (cationic and anionic solution) are sprayed simultaneously. Homogeneous on several cm2 of surface thin films are obtained in which the film thickness is controlled by spray parameters such as spraying time, solution concentration, nature of substrate to be coated
Bao, Yuqing. "Plasma spray deposition of polymer coatings." Thesis, Brunel University, 1995. http://bura.brunel.ac.uk/handle/2438/5152.
Повний текст джерелаDiccar, Unmesh Vilas Ahmed Ikramuddin. "Plasma spray coatings for polymer composites." Diss., A link to full text of this thesis in SOAR, 2006. http://soar.wichita.edu/dspace/handle/10057/643.
Повний текст джерела"December 2006." Title from PDF title page (viewed on Oct. 29, 2007). Thesis adviser: Ikramuddin Ahmed. Includes bibliographic references (leaves 68-71).
Rech, S., A. Surpi, S. Vezzu, A. Patelli, A. Trentin, J. Glor, Jenny Frodelius, Lars Hultman, and Per Eklund. "Cold-spray deposition of Ti2AlC coatings." Linköpings universitet, Tunnfilmsfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-92686.
Повний текст джерелаAhmed, Rehan. "Rolling contact fatigue of thermal spray coatings." Thesis, Brunel University, 1998. http://bura.brunel.ac.uk/handle/2438/5469.
Повний текст джерелаClark, Aaron W. "Gloss Development of Spray-coated Systems." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/ClarkAW2004.pdf.
Повний текст джерелаMartín, Vilardell Anna. "Functionalized coatings by Cold Spray for joint prosthesis." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/400484.
Повний текст джерелаLa Proyección Fría o también conocida por el nombre de Cold Spray (CS), es una técnica muy novedosa para la obtención de recubrimientos en el ámbito de la proyección térmica. El uso de bajas temperaturas de trabajo (siempre por debajo del punto de fusión del material) es lo que la hace diferente respecto al resto de técnicas convencionales, ya que la hace ideal para depositar materiales sensibles a la temperatura (ej. Materiales nanoestructurados y amorfos) o reactivos al oxígeno (ej. Titanio). Además tiene un gran potencial a nivel económico y ambiental por ser un proceso eficiente y respetuoso con el medio ambiente. La investigación se basa principalmente en la obtención de recubrimientos de titanio rugoso y fosfato cálcico mediante proyección fría, donde se han estudiado los diferentes mecanismos de deposición de las materias primas y se ha elaborado un estudio a nivel mecánico y biológico. Además, se han realizado tratamientos adicionales sobre los recubrimientos de titanio para obtener superficies nanotexturizadas y poderlas comparar in vitro. El uso de partículas gruesas de titanio facilita la obtención de grandes rugosidades superficiales en los recubrimientos de titanio, mejorando así la viabilidad y proliferación celular, al igual que la diferenciación y mineralización celular, en comparación a superficies con bajas rugosidades (como las superficies de titanio granalladas). Aun así, los tratamientos de nanotexturización, tales como el anodizado (donde se obtuvieron nanotubos de TiO2 con un diámetro entre 50-100nm) y el tratamiento alcalino (en el cual se obtuvieron porosidades <100nm), promovieron aún más la respuesta celular de los recubrimientos de titanio en los aspectos previamente mencionados. Por otra parte, los recubrimientos de hidroxiapatita (HA), se depositaron por CS sin ninguna amorfización. También se observó que el proceso de obtención de la HA influía en la deposición de la partícula. La deposición de una HA sinterizada ocurre mediante el colapso de poros y fragmentación dinámica de la partícula, reduciendo así el tamaño de cristal por mecanismos de deformación plástica. Por el otro lado, el polvo de HA obtenido mediante aglomeración, se deposita mediante la compactación y consolidación entre partículas, pudiendo hacer crecer la capa. In vitro, la HA sinterizada da una mayor diferenciación celular, mientras que la HA aglomerada da una mayor viabilidad y proliferación celular. Los recubrimientos de HA aglomerada fueron comparados con los que actualmente se producen por proyección de plasma, y se observó una mejor respuesta celular en los recubrimientos obtenidos por CS debido a que no ofrece cambios microestructurales en el polvo de partida. Para resumir, el CS es una técnica idónea para la producción de recubrimientos metálicos y cerámicos para prótesis articulares, especialmente con materiales sensibles a la temperatura y al oxígeno. Al no producirse un cambio microestructural en el recubrimiento durante el proceso de su obtención, permite la elaboración de recubrimientos personalizados.
Vyawahare, Siddharth M. Ahmed Ikram. "Protective thermal spray coatings for polymer matrix composites." Diss., A link to full text of this thesis in SOAR, 2006. http://soar.wichita.edu/dspace/handle/10057/684.
Повний текст джерела"December 2006." Title from PDF title page (viewed on Sept. 18, 2007). Thesis adviser: Ikram Ahmed. Includes bibliographic references (leaves 79-81).
Liu, Junling. "Plasma spray deposition of silicon nitride composite coatings." Thesis, London South Bank University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288111.
Повний текст джерелаMarrocco, Tiziana. "Development of improved cold spray and HVOF deposited coatings." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/11453/.
Повний текст джерелаWang, Weiliang. "Novel functional nano-coatings on glass by spray deposition." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:45bd0d35-111e-4855-96f1-edf109e65b7b.
Повний текст джерелаStoica, Virgiliu. "Sliding wear of post-treated thermal spray cermet coatings." Thesis, Heriot-Watt University, 2005. http://hdl.handle.net/10399/220.
Повний текст джерелаFernandez-Urrutia, Ruben. "Consolidation of Cermet Coatings by Cold Gas Dynamic Spraying." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36103.
Повний текст джерелаPatterson, Travis. "Effects of Internal Oxidation on Thermo-Mechanical Properties of Atmospheric Plasma Sprayed Conicraly Coatings." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2959.
Повний текст джерелаM.S.M.S.E.
Department of Mechanical, Materials and Aerospace Engineering
Engineering and Computer Science
Materials Science & Engr MSMSE
Bazyaran, Fatemeh (Maryam). "Deposition of environmentally friendly cermets coatings by thermal spray techniques." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/666575.
Повний текст джерелаEn primer lugar, el objetivo principal de este trabajo de investigación fue producir recubrimientos cermets de respetuosos del medio ambiente, matriz libre de Ni y Co, alternativa a WC-Co convencional, por la proyecciones térmicas. WC-Co cermets siempre ha sido uno de los recubrimientos más demandados en aplicaciones anti desgaste y anticorrosión en la industria, pero los problemas ambientales de la matriz de metales (Co y Ni) se han debido a cambios en los procesos convencionales. Estos elementos no son dañinos en su estado fundamental, pero el procesamiento genera cambios en los estados de oxidación que los hacen cancerígenos. Por eso, esta tesis se ha centrado en reemplazar los procesos existentes o utilizar materias primas que son menos nocivas. Por lo tanto, depositar los nuevos cermets en los diferentes sustratos por proyecciones térmicas convencionales o novedosas (CGS) son los principales puntos de motivación de esta tesis. Nadie ha depositado previamente con éxito dicho material por el método CGS o HVOF con las mismas propiedades que el WC-Co convencional, que también fue uno de los principales puntos de motivación. En este trabajo podríamos producir recubrimientos de Ti-TiC con diferentes porcentajes de fase de Carburo por CGS, TiC con aleación metálica de FeCrAlTi por método HVOF, SiC con matrices metálicas de Ti y TiCr por ambas técnicas CGS y HVOF y WC cermet con matriz de metal Ti por técnicas CGS, HVOF y APS. Por eso, los objetivos principales de esta Tesis se titulan "Deposición de respetuoso con el medio ambiente recubrimientos de los cermets por el proyecciones térmicas".
Matthews, Steven. "Erosion-Corrosion of Cr3C2-NiCr High Velocity Thermal Spray Coatings." Thesis, University of Auckland, 2004. http://hdl.handle.net/2292/39.
Повний текст джерелаBahrami, Arash. "Evaluation of thermal spray coatings with peel adhesion test PAT." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/MQ54103.pdf.
Повний текст джерелаStewart, Simon Hardie. "The rolling contact fatigue of post-treated thermal spray coatings." Thesis, Heriot-Watt University, 2005. http://hdl.handle.net/10399/234.
Повний текст джерелаRu, Tao. "Spray Parameters Influence on Suspension Plasma Sprayed Zirconia coatings properties." Thesis, Högskolan Väst, Avd för tillverkningsprocesser, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-6960.
Повний текст джерелаHaqu, Ziaul. "Fatigue behavior of plasma spray coatings on polymer matrix composite materials." Thesis, Wichita State University, 2008. http://hdl.handle.net/10057/2103.
Повний текст джерелаWichita State University, College of Engineering, Dept. of Mechanical Engineering
Includes bibliographic references (leaves 42-43)
Casadei, Fabrizio. "Graded titanium based coatings by combining thermal spray and PVD technologies." Thesis, University of Hull, 2008. http://hydra.hull.ac.uk/resources/hull:1740.
Повний текст джерелаHaqu, Ziaul Ahmed Ikram. "Fatigue behavior of plasma spray coatings on polymer matrix composite materials." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2103.
Повний текст джерелаMacDonald, Daniel. "Restoration of Aluminum Aerospace Parts and Coatings Using Cold Gas Dynamic Spraying." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31718.
Повний текст джерелаLapushkina, Elizaveta. "Anti-corrosion coatings fabricated by cold spray technique : Optimization of spray condition and relationship between microstructure and performance." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI054.
Повний текст джерелаAnticorrosion coatings of Zinc and Aluminium were developed by high pressure and low-pressure Cold Spray techniques, respectively. For Zinc coatings, the dependence of spraying temperature on thickness has been analyzed and the critical temperature of deposition was found at 230 oC. For lower temperatures, the coating was considerably thinner. Dependence of thickness on pressure variation 2 MPa, 2,5 MPa and 3 MPa at constant temperature 290 oC has shown the highest thickness value at 2 MPa. It was confirmed that the coating thickness tends to decrease with the pressure rise. The powder feeding rate as well as the spraying distance were also considered to influence the thickness. The optimal conditions were found for 3ps and 30 mm, respectively. Finally, the gas temperature and pressure were optimized by a Doehlert uniform shell design. Their influences on the zinc coating quality were discussed in terms of microstructure, porosity, thickness, and corrosion resistance. A maximum porosity of 4.2% was reached with the highest pressure and with a moderate temperature (260 °C < T < 300 °C). These conditions promoted erosion of the substrate and a lower accommodation of particles at the impact. Thicker coatings were obtained at higher temperatures because of better particle straining. Two optimal conditions were then identified: 320 °C–2.5 MPa and 260 °C–2.5 MPa. Macroscopic and local electrochemical experiments were performed. Higher corrosion resistance was detected for the condition 320 °C–2.5 MPa. Coatings were enough thick to protect the substrate and the corrosion mechanism was driven by the classical Zn hydroxide and oxide layers. Note that the coating roughness may be optimized later to reduce the corrosion initiation. For aluminum coatings deposited by a low-pressure cold spray method, the optimal spraying parameters according to deposition efficiency were found at 400 °C /0.65 MPa. Ceramic particles were added to densify the coating and allowed to reduce porosity from 8% to 6.4%. Instead of ceramic particle addition, laser surface treatment was performed after coating design. Laser power was not enough high to reach the surface melting, however, the coating microhardness was modified. Results showed a microhardness increase of coatings of 5% with the addition of hard particles whereas the microhardness decreased after the post-heat treatment (pure aluminum coating reduction of 39% and for composite coating 35%). The hardness reduction during the laser treatment was attributed to surface annealing and the release of internal stresses and possible recrystallization with the subsequent grain growth. Finally, the results of the electrochemical investigations showed higher corrosion resistance of ceramic composite coatings than both pure aluminum and laser-treated coatings
Blair, Taylor Keffer. "Development of a Plasma Spray Process Monitoring System through Aeroacoustic Signal Analysis." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/79899.
Повний текст джерелаPh. D.
Blair, Taylor K. "Development of a Plasma Spray Process Monitoring System through Aeroacoustic Signal Analysis." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/79899.
Повний текст джерелаPh. D.
Leblanc, Robert Samuel. "Influence of Nozzle Material and Spray Parameters on Pure Aluminum and Aluminum 7075 coatings using Cold Gas Dynamic Spray." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34202.
Повний текст джерелаSundberg, Kristin L. "Application of Materials Characterization, Efficacy Testing, and Modelling Methods on Copper Cold Spray Coatings for Optimized Antimicrobial Properties." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-dissertations/511.
Повний текст джерелаGardon, Ramos Marc. "Titanium Dioxide coatings obtained by Thermal Spray technlologies and their functional application." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/128199.
Повний текст джерелаEl principal objetivo de esta tesis es la fabricación de recubrimientos funcionales de óxido de titanio obtenidos por Atmospheric Plasma Spray (APS) y Cold Gas Spray (CGS). El rol funcional debe ser entendido cómo la capacidad de las superfícies de TiO2 de responder de una manera determinada ante ciertas condiciones. El H2 contenido en el plasma podía reducir el TiO2 hacia compuestos no estequiométricos o estequiométricos como los sub-óxidos de titanio (TiO2-x) o las fases de Magnéli (TinO2n-1). Una gran acumulación de vacantes de oxígeno en la estructura cristalina del rutilo llevó a la formación de un nivel dador hacia la banda de conducción. Este inesperado procedimiento llevó a producir recubrimientos APS TiO2-x / TinO2n-1 sobre acero inoxidable y aplicarlos como electrodos en baterías bi-polares. Posteriormente, se decidió recubrir con este material electrodos típicamente utilizados como láminas finas de acero inoxidable y aluminio, compuestos de carbono-polímero y espumas de níquel. Con la intención de ofrecer más innovación a los sensores convencionales de óxido metálico, se decidió fabricar la capa activa sobre un sustrato polimérico flexible. Fue posible alcanzar ciertas condiciones experimentales que evitaron la degradación térmica del polímero. Se centraron esfuerzos en CGS, que no necesita fundir el material para producir el recubrimiento. De esta forma, anatasa nanoestructurada se utilizó como materia prima con el objetivo de lograr capas fotocatalíticas con gran superfície específica, capaces de degradar diferentes contaminantes. Se utilizó un polvo capaz de crear enlaces químicos con el sustrato. Se prepararon mezclas con otros polvos con el objetivo de mejorar su fluidez y evitar la obstrucción de las tuberías. Primero, recubrimientos Cu/nano-TiO2 fueron depositados utilizando condiciones que favorecieron el anclaje de las partículas de anatasa en la superfície del recubrimiento. Las muestras degradaron tolueno en fase gaseosa con éxito. Por otro lado, la mezcla micro-TiO2/nano-TiO2 no se depositó sobre acero. Se utilizó un sustrato préviamente recubierto con APS TiO2-x. Estos recubrimientos degradaron con éxito fenol y ácido fórmico en fase líquida. Se decidió incrementar la bioactividad del PEEK (polyetheretherketone). Sin embargo, fue posible anclar partículas de TiO2 sobre el polímero previamente recubierto por Ti mediante CGS, obteniendo recubrimientos gruesos con una buena adherencia. Cultivos de osteoblastos fueron analizados sobre PEEK, Ti en PEEK y nano-TiO2 en PEEK. Se obtuvo una mayor adhesión, proliferación y diferenciación celular a medida que los recubrimientos CGS fueron aplicados.
Askestad, Inga. "Ceramic Thermal Barrier Coatings of Yttria Stabilized Zirconia Made by Spray Pyrolysis." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16324.
Повний текст джерелаCoulson, W. "Characterisation of coatings deposited by the high velocity oxygen fuel process." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260773.
Повний текст джерелаSong, Bo. "Thermal spray and laser cladding of nickel-chromium coatings for high temperature applications." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/55598/.
Повний текст джерелаKubrin, Roman [Verfasser], and Wolfgang [Akademischer Betreuer] Bauhofer. "Deposition of advanced phosphor coatings by flame spray pyrolysis / Roman Kubrin. Betreuer: Wolfgang Bauhofer." Hamburg-Harburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2012. http://d-nb.info/1048542416/34.
Повний текст джерелаRogers, Daniel Michael. "INVESTIGATION OF THERMAL SPRAY COATINGS ON AUSTENITIC STAINLESS STEEL SUBSTRATE TO ENHANCE CORROSION PROTECTION." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1651.
Повний текст джерелаFanicchia, Francesco. "Investigation of combustion flame spray as in-situ repair technology for thermal barrier coatings." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51006/.
Повний текст джерелаVenkatachalapathy, Viswanathan. "PLASMA PROCESSING FOR RETENTION OF NANOSTRUCTURES." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4197.
Повний текст джерелаPh.D.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science & Engr PhD
Siegert, Roberto. "A novel process for the liquid feedstock plasma spray of ceramic coatings with nanostructural features." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=980671728.
Повний текст джерелаSingh, Virendra. "Rare Earth Oxide Coating with Controlled Chemistry Using Thermal Spray." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5503.
Повний текст джерелаID: 031001377; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Adviser: Sudipta Seal.; Title from PDF title page (viewed May 21, 2013).; Thesis (Ph.D.)--University of Central Florida, 2012.; Includes bibliographical references (p. 171-182).
Ph.D.
Doctorate
Materials Science Engineering
Engineering and Computer Science
Materials Science and Engineering
Frodelius, Jenny. "Characterization of Ti2AlC coatings deposited with High Velocity Oxy-Fuel and Magnetron Sputtering Techniques." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11422.
Повний текст джерелаReport code: LIU-TEK-LIC-2008:15.
Krause, Amanda Rochelle. "Characterization Study of Plasma Spray Attachment of Intrinsic Fabry-Perot Interferometric Sensors in Power Generation Applications." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76798.
Повний текст джерелаMaster of Science
Jadhav, Amol D. "Processing, characterization, and properties of some novel thermal barrier coatings." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1183851697.
Повний текст джерелаBaril-Gosselin, Simon. "Improving Integrally Heated Composite Tooling Through Cold Sprayed Copper Coatings and Heat Transfer Simulations." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24237.
Повний текст джерелаShin, Dongyun. "Development of High Temperature Erosion Tunnel and Tests of Advanced Thermal Barrier Coatings." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1522415020378523.
Повний текст джерелаClavijo, Mejía Germán Andrés. "Development of Radio-opaque Bioglass/Hydroxyapatite coatings deposited by HVOF and SPS thermal spray for biomedical applications." Thesis, Limoges, 2019. http://www.theses.fr/2019LIMO0099.
Повний текст джерелаHydroxyapatite (HAp) and bioactive glass (BG45S5) are widely employed as precursors of thermally sprayed coatings to enhance the biocompatibility of biomedical implants. This, due to the similar structure of HAp with the bone tissue and the high reactivity of BG with biological media allowing the rapid bone tissue ingrowth on its surface. The combined deposition of both materials leads to build-up highly bioactive coatings with proper stability in comparison with single coatings. Furthermore, the HAp bioactivity and the BG45S5 radiopacity can be improved by obtaining the first from natural sources, as bovine-derived HAp (BHAp), and the second through the addition of radio-opacifiers as Bi2O3 to the BG structure. Consequently, coatings with augmented both, biocompatibility and x-rays opacity that allow improving the bioactivity and facilitate the use of non-invasive diagnostic methods, can be achieved. This research presents the development of biocompatible and opacified thick coatings deposited by High-Velocity Oxygen Fuel (HVOF) and Atmospheric Plasma Spray (APS) techniques. The chemical composition, structure, and microstructure of radiopaque BHAp/BG45S5+Bi2O3 coatings were studied, as well as the properties of raw materials were also analyzed. Afterward, the bioactivity of several coatings’ architecture, i.e., monolayers, graded, and multilayers, were assessed. The experimental results show that BHAp feedstock powder is mainly carbonated B-type apatite with a high purity HAp phase. The lab-made BG45S5 powders exhibit the chemical composition and physical properties with a substantial similarity compared to commercial BG45S5. The weight percent of 1 up to 20 of Bi2O3 was added to the bioactive glass to modify its radiopacity. Radiographic images of BG45S5+Bi2O3 show that 10 wt.% of the opacified material allows increasing the opacity of the BG mixture homogeneously by 3.6 times with no considerable effects on its structural and thermal properties. Regarding the thermally sprayed coatings, CO32- and the Mg contents on BHAp lead to the formation of dolomite in the crystalline phase of the surface of single HVOF BHAp coating. Single BHAp APS coating does not exhibit any secondary phases in its surface crystalline content. A typical apatite layer is evidenced after 3 days of immersion in simulated body fluid (SBF) in the surface of both coatings and single BHAp HVOF coating show delamination after 5 days of immersion. Thus, APS was chosen to spray and analyze single BG45S5, BG45S5+10 wt.% Bi2O3 and gradual BHAp/BG45S5+10 wt.% Bi2O3 coatings. Single BG45S5+10 wt.% Bi2O3 coating shows similar microstructure and amorphous structure in comparison with the plasma-sprayed single coating using commercial BG45S5 feedstock powder without Bi2O3. However, delamination and a reduced rate of apatite layer formation are observed. Graded BHAp/BG45S5+10 wt. % Bi2O3 coating shows a similar rate of apatite layer growth compared to single BG45S5+10 wt. % Bi2O3 coating. Nevertheless, the apatite formation after 10 days of immersion in SBF and no delamination are observed on the surface of the coating due to the graded deposition of BG45S5+10 wt. % Bi2O3 combined with BHAp
Zhang, Jinming. "Development of Environmentally Friendly Non-Chrome Conversion Coatings for Cold-Rolled Steel." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/28803.
Повний текст джерелаPh. D.
George, Faith Olajumoke. "Chromium-free conversion coating of aluminium-copper alloys." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/chromiumfree-conversion-coating-of-aluminiumcopper-alloys(5176c8af-02af-44a8-a47f-44b5a0c2585c).html.
Повний текст джерелаLi, Ran. "Isothermal Oxidation Study of Gd2Zr2O7/YSZ Multi-Layered Thermal Barrier Coatings." Thesis, Högskolan Väst, Avd för tillverkningsprocesser, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-8139.
Повний текст джерелаFrodelius, Jenny. "Characterization of Ti2AlC coatings deposited with High Velocity Oxy-Fuel and Magnetron Sputtering Techniques." Licentiate thesis, Linköping University, Linköping University, Thin Film Physics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11422.
Повний текст джерелаThis Thesis presents two different deposition techniques for the synthesis of Ti2AlC coatings. First, I have fabricated Ti2AlC coatings by high velocity oxy-fuel (HVOF) spraying. Analysis with scanning electron microscopy (SEM) show dense coatings with thicknesses of ~150 µm when spraying with a MAXTHAL 211TM Ti2AlC powder of size ~38 µm in an H2/O2 gas flow. The films showed good adhesion to stainless steel substrates as determined by bending tests and the hardness was 3-5 GPa. X-ray diffraction (XRD) detected minority phases of Ti3AlC2, TiC, and AlxTiy alloys. The use of a larger powder size of 56 µm resulted in an increased amount of cracks and delaminations in the coatings. This was explained by less melted material, which is needed as a binding material. Second, magnetron sputtering of thin films was performed with a MAXTHAL 211TM Ti2AlC compound target. Depositions were made at substrate temperatures between ambient and 1000 °C. Elastic recoil detection analysis (ERDA) shows that the films exhibit a C composition between 42 and 52 at% which differs from the nominal composition of 25 at% for the Ti2AlC-target. The Al content, in turn, depends on the substrate temperature as Al is likely to start to evaporate around 700 °C. Co-sputtering with Ti target at a temperature of 700 °C, however, yielded Ti2AlC films with only minority contents of TiC. Thus, the addition of Ti is suggested to have two beneficial roles of balancing out excess of C and to retain Al by providing for more stoichiometric Ti2AlC synthesis conditions. Transmission electron microscopy and X-ray pole figures show that the Ti2AlC grains grow in two preferred orientations; epitaxial Ti2AlC (0001) // Al2O3 (0001) and with 37° tilted basal planes of Ti2AlC (101̅7) // Al2O3 (0001).
Report code: LIU-TEK-LIC-2008:15.
Sadeghimeresht, Esmaeil. "Corrosion Behavior of HVAF-Sprayed Bi-Layer Coatings." Licentiate thesis, Högskolan Väst, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-9929.
Повний текст джерелаShinozaki, Maya. "The effect of sintering and CMAS on the stability of plasma-sprayed zirconia thermal barrier coatings." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/244944.
Повний текст джерела