Relevant bibliographies by topics / Plasma sprayed

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Plasma sprayed'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Plasma sprayed"

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Herman, Herbert. "Plasma-Sprayed Coatings." Scientific American 259, no. 3 (September 1988): 112–17. http://dx.doi.org/10.1038/scientificamerican0988-112.

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Wang, Liu Ying, Gu Liu, Han Gong Wang, and Shao Chun Hua. "Properties of Multi-Function Micro-Plasma Sprayed Nanostructured Al2O3-13wt%TiO2 Coatings." Key Engineering Materials 373-374 (March 2008): 59–63. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.59.

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Nonastructured Al2O3-13wt%TiO2 (AT13) coatings were deposited by multi-function micro-plasma spray and Metco 9M plasma spray, respectively. Constituent phases and the microstructure of the powder particles and coatings prepared were examined with the aid of scanning electronic microscope (SEM) and X-ray diffraction (XRD). Mechanical properties including hardness and bonding strength were also evaluated by microhardness tester and electron tensile tester. Multi-function micro plasma sprayed nanostructured AT13 Coating is fully-melted, dense and uniform. However, AT13 Coating deposited by Metco 9M plasma spray is partial-melted. The microhardness of multi-functional micro plasma sprayed AT13 Coating is HV975.7~1441.7, much higher than that of Metco 9M plasma sprayed AT13 Coating (HV655.3~946.6). The bonding strength results present the same, increased from 19.8 MPa to 42.7 MPa.
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Jech, David, Ladislav Čelko, Lenka Klakurková, Karel Slámečka, Miroslava Horynová, and Jiří Švejcar. "Formation of Thermally Sprayed Coatings on Grid-Like Structure Substrate." Solid State Phenomena 258 (December 2016): 387–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.258.387.

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The main goal of this contribution is to investigate the influence of the substrate morphology on the resulting thermally sprayed coatings microstructure. Therefore, three different representative coating systems and/or thermal spray techniques were utilized to produce the coatings on grid-like structure substrates: (i) CoNiCrAlY bond coat (BC) sprayed by high velocity oxygen fuel (HVOF) technique and yttria stabilized zirconia (YSZ) top coat (TC) sprayed by means of atmospheric plasma spray (APS) technique, (ii) YSZ coating sprayed by means of APS and (iii) YSZ coating sprayed by means of nanoparticle colloid suspension plasma spraying (SPS). The shadowing effect of thermal spray coatings in relation with the grid-like substrate structure was investigated in detail. Resulting microstructure of sprayed samples was studied utilizing light microscopy, digital image analysis, scanning electron microscopy, energy-dispersive spectrometer and X-ray diffraction techniques.
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Kowalski, S., R. Belka, W. Żórawski, M. Sztorc, A. Góral, and M. Makrenek. "Microstructural study of plasma sprayed hydroxyapatite coatings." Journal of Achievements in Materials and Manufacturing Engineering 2, no. 83 (August 1, 2017): 79–84. http://dx.doi.org/10.5604/01.3001.0010.7035.

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Purpose: The aim of this study is to present microstructure and mechanical properties of hydroxyapatite coatings sprayed by means novel plasma system with axially injection of powder. Design/methodology/approach: Coatings were deposited with Axial III plasma spraying system and examined by SEM, XRD and by a nanoindentation technique (Nanovea) with a Berkovitz indenter. Surface of coatings was analysed by means of a Talysurf CCI-Lite non-contact 3D profiler. Findings: This study shows the microstructure and mechanical properties of hydroxyapatite coatings (HA) obtained by plasma spraying from the powder with a cauliflower-like high porous structure consisting of nanograins with dimension below 100 nm. The cross-section of plasma sprayed HA coating reveals lamellar structure containing pores in the interior of the lamellae. Moreover, between lamellae, some microcracks were detected. Hardness and elastic modulus measured by nanoindentation were found to be around 0.085 and 6.82 GPa respectively, what was comparable with HA coatings sprayed by a modified cold spray system. Both XRD patterns are practically identical, so no new phases were created in hydroxyapatite coating in comparison with feedstock powder during the spray process. High values of a geometry of HA coating; maximum peak height, maximum pit height and maximum height confirmed significant roughening of a surface, which is a result of the interaction of melted powder grains with the surfaces during the plasma spraying. Research limitations/implications: Obtained properties of coatings will be the base for comparison with suspension plasma sprayed coatings. Practical implications: Hydroxyapatite coatings deposited by means novel plasma system are designated for spraying implants. Originality/value: Properties of hydroxyapatite coatings plasma sprayed with novel axially injection of powder.
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Ahn, Jee Hoon, Eun Pil Song, Sung Hak Lee, and Nack J. Kim. "Wear Resistance of Plasma-Sprayed Al2O3-TiO2 Nanocoatings." Key Engineering Materials 345-346 (August 2007): 641–44. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.641.

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Wear resistance of Al2O3-8wt.%TiO2 coatings plasma-sprayed using nanopowders was investigated. Four types of nanostructured Al2O3-8wt.%TiO2 powders were plasma-sprayed on a low-carbon steel substrate by using different critical plasma spray parameters (CPSP). The coatings consisted of completely melted and partially melted regions. The hardness of the coatings increased with increasing CPSP, while the wear resistance was the highest for the coating sprayed with the lowest CPSP. The main wear mechanism was a delamination mode in the coating sprayed with the high CPSP, but was changed to an abrasive mode in the coating sprayed with the low CPSP. According to this change in the wear mechanism, the wear resistance was the best in the coating sprayed with lowest CPSP, while its hardness was lowest.
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Thirumalaikumarasamy, D., V. Balasubramanian, S. Sree Sabari, R. Rajesh, and Medha R. Elayidom. "Predicting the Deposition Efficiency of Plasma Sprayed Alumina Coatings on AZ31B Magnesium Alloy by Response Surface Methodology." Applied Mechanics and Materials 877 (February 2018): 66–81. http://dx.doi.org/10.4028/www.scientific.net/amm.877.66.

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Plasma sprayed ceramic coatings are successfully employed in many industrial applications, where high wear and corrosion resistance with thermal insulation are needed. Plasma spray parameters such as power, stand-off distance and powder feed rate have significant influence on coating characteristics like deposition efficiency. This paper presents the use of statistical techniques specially response surface methodology (RSM), analysis of variance, and regression analysis to develop empirical relationships to predict deposition efficiency of plasma sprayed alumina coatings on AZ31B magnesium alloy. The developed empirical relationships can be efficiently used to predict deposition efficiency of plasma sprayed alumina coatings at 95% confidence level. Response graphs and contour plots were constructed to identify the optimum plasma spray parameters to attain maximum deposition efficiency in alumina coatings. Further, correlating the spray parameters with coating properties permits the identification of characteristics regime to achieve desired quality of coatings.
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Antoš, Jakub, Petra Šulcová, Kateřina Lencová, Šárka Houdková, Josef Duliškovic, Jan Hajšman, Karolína Burdová, and Antonín Račický. "LOCAL MECHANICAL PROPERTIES OF ATMOSPHERIC SPRAYED MOLYBDENUM COATINGS DEPOSITED WITH CASCADED PLASMA TORCH." Acta Polytechnica CTU Proceedings 27 (June 11, 2020): 32–36. http://dx.doi.org/10.14311/app.2020.27.0032.

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Increasing interest for industrial use of thermally sprayed coatings leads to development in most thermal spraying technologies, including atmospheric plasma spraying (APS). The latest cascaded torch SinplexPro from Oerlikon Metco incorporates the efficiency advantages of cascaded arc technology into a single-cathode spray gun. It leads to more stable plasma arc across a wide range of gas flows, mixtures and pressures and also highly increases powder throughput. Thermal sprayed molybdenum coatings are widely used for improving wear resistance and sliding properties in many mechanical applications. Results of pure molybdenum coatings sprayed with cascaded plasma torch are not yet fully investigated. In this paper, mechanical properties of atmospheric plasma sprayed molybdenum coatings on steel (S235) substrate are evaluated. Optimization of spraying parameters for spherical Mo powder sprayed by cascaded plasma torch SinplexPro is carried out and the influence on final microstructure, mechanical and tribological properties of molybdenum coatings is analysed.
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Kumar, K., and D. Das. "Aligned, plasma sprayed SmCo5deposits." Journal of Applied Physics 60, no. 10 (November 15, 1986): 3779–81. http://dx.doi.org/10.1063/1.337542.

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Elam, W. T., J. P. Kirkland, R. A. Neiser, E. F. Skelton, S. Sampath, and H. Herman. "PLASMA SPRAYED HIGH TcSUPERCONDUCTORS." Advanced Ceramic Materials 2, no. 3B (July 1987): 411–21. http://dx.doi.org/10.1111/j.1551-2916.1987.tb00105.x.

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Konaka, T., I. Sankawa, T. Higashi, and K. Ishihara. "Plasma sprayed highTcoxide superconductors." Ferroelectrics 92, no. 1 (April 1989): 123–28. http://dx.doi.org/10.1080/00150198908211316.

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Dissertations / Theses on the topic "Plasma sprayed"

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Tsui, Yun Cheong. "Adhesion of plasma sprayed coatings." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/283710.

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Ru, 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.

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Thermal barrier coatings (TBCs) are a simple and proven method to protect hot section components. Suspension Plasma Spray (SPS), an emerging process technology to generate TBCs, compared with traditional Atmospheric Plasma Spray APS, can deposit thinner coat-ings with finer microstructure. Operating parameters play an important role in developing certain properties of coating. In this thesis work, power level, gas flow rate, number of spray-ing strokes, spray gun's nozzle size i.e. internal diameter and suspension rate were controlled to produce coatings with different microstructures and porosity levels. According to the ex-perimental results, the power level of plasma gun play an essential role on coating micro-structure, for instance, the density of vertical cracks increased with growing the power level. The number of spraying strokes showed also an impact on coating porosity. However, due to different nozzle sizes i.e. diameter, the same coating property were controlled by different operating parameters. For coatings deposited by small and large nozzles, their coating thick-ness and roughness mainly relied on power level and gas flow rate. In contrary, it seems that the coating roughness was not influenced by the same parameters when it was deposited by medium nozzle. Also, gas flow rate do not have as big as influence on coating thickness
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Gill, Stephen Charles. "Residual stresses in plasma sprayed deposits." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386108.

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Fox, A. C. "Gas permeation through plasma sprayed ceramic coatings." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599155.

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This work has addressed the gas transport rate and mechanism through plasma sprayed coatings. This is of particular interest for thermal barrier coatings (TBCs) and solid oxide fuel cell electrodes. Deposits of ZrO2 - 8 wt% Y2O3, ZrO2 - 14 wt% Y2O3 and A12O3 have been plasma sprayed under varying conditions. Microstructural studies and density measurements have been carried out to characterise the porosity content and microcrack distribution. Crystallographic phase analysis and Young's Modulus measurements have also carried out. The gas permeability of each specimen has been measured at temperatures up to 600°C. These measurements involve a thin disc of the coating being sealed over a ceramic tube. A mass flow controller was used to set a constant gas flow rate, and the resulting pressure difference across the coating was measured once steady state had been reached. D'Arcy's Law was then used to determine the specific permeability of each specimen. Measurements were carried out on the coatings using hydrogen, oxygen and nitrogen as the permeating gases. Values of the specific permeability were of the order of 10-16m2 for zirconia coatings and 10-17 m2 for alumina coatings. These results were correlated with microstructural observations via a simple analytical model for gas permeation, based on Percolation Theory. In this model, large pores were treated as isolated cavities with connecting microcracks, predicting a high sensitivity to the density and connectivity of microcracks. Good agreement was obtained between theory and experiment in terms of the magnitude of the permeability. The oxygen flux through the top coat of a TBC has been calculated from the permeability of the coating. Published values of the diffusion coefficient have been used to calculate the oxygen flux by diffusion. These 2 transport mechanisms have been compared and gas permeation has been found to dominate over diffusion at the operating temperatures of a TBC. Oxide growth at the bond coat / top coat interface of a TBC has been shown to be controlled by diffusion through the oxide layer.
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Cipitria, Amaia. "Sintering of plasma-sprayed thermal barrier coatings." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612066.

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Sokolowski, Pawel. "Properties of suspension plasma sprayed zirconia coatings using different plasma torches." Thesis, Limoges, 2016. http://www.theses.fr/2016LIMO0133/document.

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Dans cette thèse plusieurs questions scientifiques concernant la projection plasma de suspensions (SPS) revêtements de zircone ont été étudiées. Les revêtements ont été analysées principalement en termes de l'application comme isolant top-coat des revêtements de barrière thermique (TBC). Ces revêtements multicouches sont appliqués sur les parties métalliques par exemple, Les turbines à gaz pour les protéger contre les charges thermiques élevées provoquées par les gaz d'échappement chauds. Mais l'évaluation initiale de la possibilité de l'utilisation de la projection plasma de suspensions pour produire la couche d'électrolyte en pile à combustible à oxyde solide (SOFC) a été fait aussi. SOFC semblent être les types de piles à combustible les plus prometteurs actuellement. (Voir le chapitre 1-2 de la revue de la littérature).Le premier objectif de recherche important était d'analyser la possibilité de produire des revêtements étant différents en termes de la microstructure. L'objectif principal était d'obtenir des revêtements caractérisés par une structure très poreuse et irrégulière (appelé colonnaires-like), mais aussi des revêtements très denses et homogènes avec typique, deux zones microstructure. A cet effet, les deux poudres de zircone ont été utilisées: (i) l'oxyde de zirconium entièrement stabilisé à l'yttria et (ii) de la zircone yttria-oxyde de cérium stabilisé. Les poudres ont des compositions chimiques différentes, la taille des particules et leur morphologie. Ces poudres ont été utilisées pour une formulation de suspension. L'autre variable dans le procédé de pulvérisation est la concentration de la suspension. La suspension avec une teneur en matières solides dans la gamme de 2,5 et 30 en poids % ont été préparées et projetée. Toutes les suspensions ont été produites au laboratoire. Un concept très important de ce travail est l'utilisation de quatre différents, disponibles dans le commerce, des torches à plasma, à savoir: (i) SG-100, (ii) TriplexPro-200, (iii) Axial III et (iv) WSP-H 500. Les torches étaient différentes en termes de conception, l'énergie électrique, le modede stabilisation du plasma et l'angle d'injection de suspension. En raison des grandes différences entre les torches à plasma et SPS set-ups les paramètres du procédé de pulvérisation ont été choisis dans chaque cas individuellement. La dernière variable dans la conception de l'expérience était la topographie et la rugosité du substrat afin d'évaluer son influence sur les revêtements des mécanismes de croissance-up. Les substrats ont été préparés avant la projection par: (i) le grenaillage, (ii) le traitement au laser et par (iii) le broyage. L'expérience de projection large a permis une analyse complexe de SPS revêtements microstructure, des mécanismes de croissance des revêtements et le développement de processus SPS lui-même. [...]
In this PhD thesis several scientific issues regarding Suspension Plasma Sprayed (SPS) zirconia coatings were studied. The coatings were analyzed mainly in terms of the application as insulating top-coat of Thermal Barrier Coatings (TBC’s). These multilayer coatings are applied onto the metallic parts of e.g. gas turbines to protect them against high temperature loads caused by the hot exhaust gases. But the initial assessment of the possibility of the use of Suspension Plasma Spraying to produce electrolyte layer in Solid Oxide Fuel Cells was done also. SOFC’s seem to be the most promising fuel cell types currently. (See Chapter 1-2 with the literature review) The first important research goal was to analyze the possibility of producing coatings being various in terms of the microstructure. The main aim was to obtain coatings characterized by very porous and irregular structure (called columnar-like) but also very dense and homogeneous coatings with typical two-zones microstructure. For this purpose two zirconia powders were used: (i) fully yttria-stabilized zirconia and (ii) ytrria-ceria-stabilized zirconia. The powders had different chemical composition, particle size and morphology. These powders were used for a suspension formulation. The other variable in the spray process was suspension concentration. The suspension with a solid content in range of 2.5 and 30 wt. % were prepared and sprayed. All suspensions were home-produced. A very important concept of this work was the use of four various, commercially-available, plasma torches, namely: (i) SG-100, (ii) TriplexPro-200, (iii) Axial III and (iv) WSP-H 500. The torches were different interms of design, electric power, plasma stabilization mode and the suspension injection angle. Due to the big differences between plasma torches and SPS set-ups the spray process parameters were chosen in each case individually. The last variable in theexperiment design was the topography and roughness of substrate in order to evaluate its influence on the coatings growth-up mechanisms. The substrates were prepared prior to spraying by: (i) grit-blasting, (ii) laser-treatment and by (iii) grinding. The wideii spray experiment allowed complex analysis of SPS coatings microstructure, coatings growth-up mechanisms and the development of SPS process itself. [...]
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Fazan, Fazilah. "In vitro behaviour of plasma sprayed hydroxyapatite coatings." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369349.

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Thompson, Joseph Andrew. "Thermomechanical behaviour of plasma-sprayed thermal barrier coatings." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621757.

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Tsipas, Sofia Alexandra. "Thermophysical properties of plasma sprayed thermal barrier coatings." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615144.

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Westergård, Richard. "Enhancement of the Tribological Properties of Plasma Sprayed Alumina." Doctoral thesis, Uppsala universitet, Institutionen för materialvetenskap, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2076.

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Thermal spraying is the name of a large group of coating deposition techniques used to deposit thick layers for a variety of applications. The principle is to melt the material, and rapidly propel the droplets towards a substrate where they flatten and solidify. When properly used, the substrate is not significantly heated. Spraying enables deposition of practically any material with a stable molten phase, on any solid material. Sprayed ceramics are used to reduce wear by sliding and by hard particles. However, due to the defect-filled microstructure resulting from spraying, the coatings typically have poor mechanical and tribological properties compared to dense, sintered materials. By varying the spraying parameters, the microstructure of the coatings was influenced, and also the wear rate and cohesion, which is difficult to quantify. Improved tribological properties resulted from spraying with axial particle injection equipment and using narrowly size distributed, spherically shaped powder particles, compared to conventional equipment and powder particles. A new method to seal the open pores of sprayed ceramic coatings by electrolysis is proposed and evaluated. It was found that almost complete sealing could be obtained, in some cases giving a drastically improved wear behaviour. The studied electrolytically deposited sealants were Pb, Sn, Cu and Ni. The latter was found to give the best performance. It also proved possible to apply PVD coatings to the sprayed ceramics, and it was shown that sprayed and Ni-sealed alumina can be superior to ball bearing steel to support thin, low friction PVD coatings.
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Books on the topic "Plasma sprayed"

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Taylor, Mary Patricia. Assessment of plasma-sprayed hydroxyapatite coatings. Birmingham: University ofBirmingham, 1995.

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Fazan, Fazilah. In vitro behaviour of plasma sprayed hydroxyapatite coatings. Birmingham: University of Birmingham, 1999.

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Davim, J. Paulo, and Manish Roy. Thermal sprayed coatings and their tribological performances. Hershey, PA: Engineering Science Reference, 2015.

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Cruse, Thomas A. Fatigue testing of plasma-sprayed thermal barrier coatings: Final report. San Antonio, [Calif.]: Southwest Research Institute, 1990.

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Kingswell, Russ. Pr operties of vacuum plasma sprayed alumina and tungsten coatings. Uxbridge: Brunel University, 1986.

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Hendricks, Robert C. Film and interstitial formation of metals in plasma-sprayed ceramics. [Washington, DC]: National Aeronautics and Space Administration, 1985.

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McIlwain, J. F. Plasma-sprayed iron-base wear-resistant coatings containing titanium diboride. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Filiaggi, Mark J. Interface characterization of the plasma sprayed ceramic coating/metal implant system. Ottawa: National Library of Canada, 1990.

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Albrecht, Cornelia D. An investigation of plasma sprayed fully yttria stabilized zirconia in thick thermal barrier coatings. Manchester: UMIST, 1997.

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Miller, Robert A. Characterization and durability testing of plasma-sprayed zirconia-yttria and hafnia-yttria thermal barrier coatings. Part 1-Effect of spray parameters on the performance of several lots of partially stabilized zirconia-yttria powder. Cleveland, Ohio: Lewis Research Center, 1993.

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Book chapters on the topic "Plasma sprayed"

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Scagliotti, M. "Plasma Sprayed Zirconia Electrolytes." In NATO ASI Series, 313–16. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0509-5_15.

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Ružbarský, Juraj, and Anton Panda. "Formation of Plasma Sprayed Coating." In Plasma and Thermal Spraying, 13–23. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46273-8_2.

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Cai, Yuxuan, Gisele Azimi, Thomas W. Coyle, and Javad Mostaghimi. "Solution Precursor Plasma Sprayed Superhydrophobic Surface." In Ceramic Transactions Series, 141–47. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119236016.ch14.

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Aydın, M. M., L. S. Ozyegin, Faik N. Oktar, E. Z. Erkmen, O. Anzabi, and Kārlis A. Gross. "Plasma Sprayed Zirconia-Hydroxyapatite Composite Coatings." In Bioceramics 18, 631–34. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-992-x.631.

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Ružbarský, Juraj, and Anton Panda. "Adhesion of Plasma Sprayed Coatings to Basic Backplate." In Plasma and Thermal Spraying, 31–42. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46273-8_4.

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Berndt, Christopher C., and Reginald McPherson. "Electron Microscopic Studies of Plasma-Sprayed Coatings." In Advances in Materials Characterization II, 265–78. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4615-9439-0_20.

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Xue, Wei Chang, Xuan Yong Liu, Xue Bin Zheng, and Chuan Xian Ding. "Plasma-Sprayed Wollastonite Coatings for Biomedical Application." In Materials Science Forum, 201–4. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-966-0.201.

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Zheng, Xue Bin, Xuan Yong Liu, Wei Chang Xue, and Chuan Xian Ding. "Study on Plasma Sprayed Calcium Silicate Coatings." In Materials Science Forum, 2371–74. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-960-1.2371.

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Ahmad, Z., and M. Ahsan. "Environmental Response of Plasma Sprayed Nanostructured Coatings." In Frontiers in Materials Science and Technology, 65–70. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-475-8.65.

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Yao, Wei Zhi, Shu Xiang Song, Zhang Jian Zhou, Wei Wei Cong, and Chang Chun Ge. "Fabrication and Evaluation of Plasma-Sprayed Molybdenum for Plasma Facing Materials." In Materials Science Forum, 1777–80. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.1777.

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Conference papers on the topic "Plasma sprayed"

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Wang, K. L., William M. Steen, and Y. M. Zhu. "Laser remelting of plasma sprayed coatings." In ICALEO® ‘98: Proceedings of the Laser Materials Processing Conference. Laser Institute of America, 1998. http://dx.doi.org/10.2351/1.5059132.

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Min Zhang, Xiaoxia Wang, Jirun Luo, and Qinglan Zhao. "Preparation of plasma-sprayed oxide cathode." In 8th International Vacuum Electron Sources Conference and Nanocarbon (2010 IVESC). IEEE, 2010. http://dx.doi.org/10.1109/ivesc.2010.5644228.

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Golubeva, A. V. "Hydrogen Retention In Plasma-Sprayed Tungsten." In HYDROGEN IN MATTER: A Collection from the Papers Presented at the Second International Symposium on Hydrogen in Matter (ISOHIM). AIP, 2006. http://dx.doi.org/10.1063/1.2213055.

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Niebuhr, D., M. Scholl, and P. Clayton. "Self-Lubricating Composite Plasma Sprayed Coatings." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0355.

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Abstract Composite self-lubricating coatings were developed using high-energy plasma spraying (HEPS). These coatings would be potentially used in high contact pressure rolling/sliding systems. The coatings are based on a steel coating deposited by high energy plasma spraying using wire feedstock. Solid lubricants such as graphite and soft metal were investigated. Twin roller rolling/sliding tests were performed at 5% and 35% creep and contact loads of 700 N to 1700 N on a 5 mm contact face. Reduced friction, compared to a steel coating-steel or 1080 wrought steel couple was observed under these rolling-sliding contact conditions.
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lavsky, J., G. G. Long, A. J. Allen, L. Leblanc, M. Prystay, and C. Moreau. "Anisotropic Microstructure of Plasma-Sprayed Deposits." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p1577.

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Abstract The microstructure of plasma-sprayed deposits (PSD) is dominated by two void systems - interlamellar pores and intralamellar cracks - each with a different anisotropy. Varying anisotropics and crack-to-pore ratios within PSDs are responsible for the anisotropic properties observed in the deposits. While it is difficult to apply standard porosity measurement techniques to the assessment of anisotropic microstructures, novel techniques utilizing different approaches have recently emerged. Image analysis (IA) of impregnated PSD samples is the most direct technique. The structure is stabilized by impregnation and then polished and imaged. The limitations of IA lie in the impregnation process and in the subsequent polishing. Also, the images produced from anisotropic materials can be difficult to interpret quantitatively. The technique of small-angle neutron scattering (SANS) has recently been successfully applied to the study of PSDs. The major advantages of SANS are that it does not require sample preparation and that quantitative information can be gotten about the separate crack and pore systems, including their distinctive anisotropics. However, the relationship between the SANS results and the underlying structure is more complex and less intuitive than for IA, and the availability of the SANS technique is limited by the need to have access to a powerful neutron source, such as a reactor. Also, the two techniques present different views of the microstructure because of the different sensitivities in different parts of the size range. This paper compares results from IA and SANS from a set of thick plasma-sprayed ceramic deposits possessing a range of crack/pore microstructures, and discusses how the two techniques might complement one another.
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Suzuki, M., S. Sodeoka, T. Inoue, K. Shimosaka, and S. Oki. "Structure and Properties of Plasma-Sprayed Zircon Coating." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0333.

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Abstract Effects of spray parameters, such as spray distance, SD, and substrate temperature, Ts, and post heat treatment on the structure and properties of plasma-sprayed zircon coatings were investigated. Zircon was totally decomposed by plasma spray; the coatings were composed of tetragonal zirconia (t-ZrO2) and amorphous silica (a-SiO2), because of the rapid cooling of molten particle right after the impingement to the substrate. Porosity of the as-sprayed coatings was highly affected by both of substrate temperature and spray distance. In all range of the spray distance which had been tried in this study, higher substrate temperature resulted in lower porosity of the coatings; the coating with porosity of 2% was obtained at Ts = 1573K with SD = 95mm. Porosity also decreased with decrease of spray distance. By the heat treatment at 1473K, t-ZrO2 transformed to monoclinic zirconia (m-ZrO2) and a-SiO2 crystallized to cristobalite, respectively. Cracks in the coating disappeared, and open porosity decreased. This can be attributed to sintering of SiO2 and phase transformation of ZrO2. After the heat treatment at 1673K, the coating was composed of ZrSiO4 with dispersed fine m-ZrO2 particle. Open porosity of all the coatings increased up to 10% at this temperature. This is because of volume shrinkage during the formation of zircon.
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Boyer, E., F. Gitzhofer, and M. Boulos. "Parametric Study of Suspension Plasma Sprayed Hydroxyapatite." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0683.

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Abstract Thermal plasma spraying is a suitable technique for hydroxyapatite [HA, Ca10(P04)6(OH)2] coating preparation. Suspension Plasma Spraying (SPS) is a newly developed process based on a suspension of fine (<10 μm) or even ultrafine (<100 μm) powders, axially fed into the RF plasma through an atomization probe. The atomization of the suspension results in microdroplets (20 μm in size). They are flash dried, melted and finally impacted onto the substrate to solidify and build the coating. The aqueous suspension of HA is chemically synthesized. Our experiments included variations of the plasma gas composition (Ar/O2, Ar/H2), the plasma deposition reactor pressure. Characterizations techniques (e.g. X-ray diffraction, scanning electron microscope and transmission electron microscope) were applied to resultant SPS HA coatings which possessed good crystallinity and about 3% weight α-TCP and lime. The texture examination has shown that preferential crystal orientation followed the (001) Miller's plane family. SPS by RF induction plasma has proved to be a reliable process for the production of thick (200 μm) HA coatings with high deposition rate (>150 μm/min).
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Senturk, Ufuk, Rogerio S. Lima, Carlos R. C. Lima, and Christopher C. Berndt. "Deformation of Plasma Sprayed Thermal Barrier Coatings." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-348.

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The deformation behavior of thermally sprayed partially stabilized zirconia (PSZ) coatings are investigated using Hertzian indentation and four-point bend testing, with in situ acoustic emission monitoring. The experimental deformation curves, together with the corresponding acoustic emission responses and the fracture properties of the material are used in defining the deformation characteristics of the coating (ceramic overlay with metallic bond coal where applicable) and substrate composite system. Experiments are aimed in examining the influence of the bond coat and the coating properties on the form of deformation. Substrate temperature and pauses during spraying are demonstrated to strongly effect the coating properties and the resulting fracture/failure characteristics of the composite system.
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Yu, Jianhua, Huayu Zhao, Shunyan Tao, Xiaming Zhou, and Chuanxian Ding. "Sintering Behavior of Plasma-Sprayed Sm2Zr2O7 Coating." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23809.

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Plasma-sprayed thermal barrier coating (TBC) systems are widely used in gas turbine blades to increase turbine entry temperature (TET) and better efficiency. Yttria stabilized zirconia (YSZ) has been the conventional thermal barrier coating material because of its low thermal conductivity, relative high thermal expansion coefficient and good corrosion resistance. However the YSZ coatings can hardly fulfill the harsh requirements in future for higher reliability and the lower thermal conductivity at higher temperatures. Among the interesting TBC candidates, materials with pyrochlore structure show promising thermo-physical properties for use at temperatures exceeding 1200 °C. Sm2Zr2O7 bulk material does not only have high temperature stability, sintering resistance but also lower thermal conductivity and higher thermal expansion coefficient. The sintering characteristics of ceramic thermal barrier coatings under high temperature conditions are complex phenomena. In this paper, samarium zirconate (Sm2Zr2O7, SZ) powder and coatings were prepared by solid state reaction and atmosphere plasma spraying process, respectively. The microstructure development of coatings derived from sintering after heat-treated at 1200–1500 °C for 50 h have been investigated. The microstructure was examined by scanning electron microscopy (SEM) and the grain growth was analyzed in this paper as well.
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Wallace, J. S., and J. Ilavsky. "Elastic Modulus Measurements in Plasma Sprayed Deposits." In ITSC 1997, edited by C. C. Berndt. ASM International, 1997. http://dx.doi.org/10.31399/asm.cp.itsc1997p0757.

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Abstract A technique has been developed to characterize the elastic modulus of zirconium oxide - 8 % yttrium oxide plasma sprayed deposits. A commercial hardness indenter has been modified to record load - displacement as a spherical ball is elastically loaded onto the surface of the material to be measured. The resulting data are used to calculate the elastic modulus. Since the loads used are in the elastic region, the technique is, in theory, nondestructive. Relatively small areas of the material, approximately 50 μm in diameter, are sampled by the indenter, allowing local mapping of elastic modulus variations throughout the deposit. Using this technique, elastic modulus variations have been measured through the thickness of the deposit. Also, different moduli were measured in the cross-section and through the thickness and these differences are correlated with the microstructure. Finally, significant increases in elastic modulus have been found in samples annealed for 2.5 h at 1100°C. These changes have been correlated with small angle neutron scattering measurements of void surface area.
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Reports on the topic "Plasma sprayed"

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Anderl, R. A., R. J. Pawelko, G. R. Smolik, and R. G. Castro. Steam chemical reactivity of plasma-sprayed beryllium. Office of Scientific and Technical Information (OSTI), July 1998. http://dx.doi.org/10.2172/666034.

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Allen, M. L., C. C. Berndt, and D. Otterson. Plasma Sprayed Ni-Al Coatings for Safe Ending Heat Exchanger Tubes. Office of Scientific and Technical Information (OSTI), November 1998. http://dx.doi.org/10.2172/6133.

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ALLAN, M. L., D. OTTERSON, and C. C. BERNDT. PLASMA SPRAYED Ni-Al COATINGS FOR SAFE ENDING HEAT EXCHANGER TUBES. Office of Scientific and Technical Information (OSTI), November 1998. http://dx.doi.org/10.2172/760982.

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Cummins, Dustin Ray, Kendall Jon Hollis, and David E. Dombrowski. Plasma Sprayed Zirconium Diffusion Barrier Development for Monolithic U-Mo Metallic Fuels. Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1330073.

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Daniel, Sordelet. Synthesis, characterization and physical properties of Al-Cu-Fe quasicrystalline plasma sprayed coatings. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/191643.

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Singh, J. P., M. Sutaria, and M. Ferber. Use of indentation technique to measure elastic modulus of plasma-sprayed zirconia thermal barrier coating. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/459439.

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Atteridge, David G., Martin Becker, Graham A. Tewksbury, and Milton Scholl. Advanced Nanoscale Coatings with Plasma Spray. Fort Belvoir, VA: Defense Technical Information Center, April 2000. http://dx.doi.org/10.21236/ada378451.

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Fleetwood, James D., Elliot Slamovich, Rodney Wayne Trice, Aaron Christopher Hall, and James F. McCloskey. Doped solid oxide fuel cell electrolytes produced via combination of suspension plasma spray and very low pressure plasma spray. Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1055901.

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Kumagai, Hideya. Section Flow Improvement of Plasma Spray Cylinder in Outboard Motor. Warrendale, PA: SAE International, October 2013. http://dx.doi.org/10.4271/2013-32-9029.

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Ray, E. R., C. J. Spengler, and H. Herman. Solid oxide fuel cell processing using plasma arc spray deposition techniques. Office of Scientific and Technical Information (OSTI), July 1991. http://dx.doi.org/10.2172/7102027.

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