Coated powder particles composed of a ceramic core and a metallic coating are being considered for plasma spray applications. The goal of using these powders is to produce particulate-reinforced metal-matrix composite coatings. In this work, the feasibility of plasma spray processing in producing these composite coatings is evaluated. A numerical model is presented to analyze the in-flight thermal behavior and physical state of moderate-size particles (10–30 μm radius) in arc-jet DC plasma under low loading conditions. The pairs of materials for the base and coating that are considered in this work are WC-Co, SiC-Ni, and SiC-Al. The plasma was taken to be atmospheric argon plasma. The study suggests that plasma processing is capable of melting the coating without excessive evaporation while retaining the base in the solid state over a range of particle sizes and base/coating proportions. Hence plasma processing appears suitable to develop particulate-reinforced metal-matrix composite coatings.
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February 2002
Technical Papers
Feasibility of Plasma Spraying in Developing MMC Coatings: Modeling the Heating of Coated Powder Particles
Marios D. Demetriou,
Marios D. Demetriou
Mechanical & Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095-1597
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Adrienne S. Lavine,
Adrienne S. Lavine
Mechanical & Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095-1597
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Nasr M. Ghoniem
Nasr M. Ghoniem
Mechanical & Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095-1597
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Marios D. Demetriou
Mechanical & Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095-1597
Adrienne S. Lavine
Mechanical & Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095-1597
Nasr M. Ghoniem
Mechanical & Aerospace Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095-1597
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received September 1999; revised January 2001. Associate Editor: M. Ohadi.
J. Manuf. Sci. Eng. Feb 2002, 124(1): 58-64 (7 pages)
Published Online: January 1, 2001
Article history
Received:
September 1, 1999
Revised:
January 1, 2001
Citation
Demetriou , M. D., Lavine , A. S., and Ghoniem, N. M. (January 1, 2001). "Feasibility of Plasma Spraying in Developing MMC Coatings: Modeling the Heating of Coated Powder Particles ." ASME. J. Manuf. Sci. Eng. February 2002; 124(1): 58–64. https://doi.org/10.1115/1.1403742
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