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Melting Behavior of In-Flight Particles and Its Effects on Splat Morphology in Plasma Spraying

[+] Author Affiliations
H. Zhang, H. B. Xiong, L. L. Zheng, A. Vaidya, L. Li, S. Sampath

State University of New York at Stony Brook, Stony Brook, NY

Paper No. IMECE2002-32514, pp. 309-316; 8 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 7
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-3638-X | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


Effects of particle size, velocity, and temperature on the splat morphology have been well studied in the open literature. Effects of melt fraction on deposition efficiency and splat morphology are, however, not well understood. In this paper, we will focus on the melting behavior of in-flight particles and their impact on splat morphologies. A group parameter, “melting index”, has been derived to correlate the melting status of in-flight particles with particle size, velocity, and temperature which can be measured experimentally. Numerical simulations have been used to determine the unknown parameters in the melting index. The effects of initial particle diameter on the melting behavior have also been investigated.

Copyright © 2002 by ASME



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