Paper Title:
Application of Taguchi Method for Optimization of Vacuum Plasma Sprayed CoNiCrAlY Coatings
  Abstract

Bond coatings, CoNiCrAlY, are prepared on Inconel 738 substrate by vacuum plasma spray (VPS). Mechanical properties of VPSed CoNiCrAlY coatings are investigated via Taguchi method and L18(21×37)orthogonal arrays to determine the optimal setting and the relationship of experimental variables. Seven parameters were considered as follows: (A) arc current; (B) primary gas flow rate; (C) secondary gas flow rate; (D) stand-off distance; (E) working pressure; (F) carrier gas flow rate (Ar); and (G) powder feeding rate.The effect of carrier gas flow rate on the porosity is determined to be the highest among the parameters investigated. Higher microhardness values are observed for the VPSed coatings as compared to the coatings prepared by conventional high velocity oxygen fuel probably due to low amount of the porosity.

  Info
Periodical
Solid State Phenomena (Volumes 124-126)
Edited by
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages
1549-1552
DOI
10.4028/www.scientific.net/SSP.124-126.1549
Citation
K. H. Lee, K.H. Ye, S.T. Kim, C. H. Jeon, Y. S. Song, J. H. Seo, B. Y. Kim, M. H. Lee, N. I. Cho, D. Y. Lee, "Application of Taguchi Method for Optimization of Vacuum Plasma Sprayed CoNiCrAlY Coatings", Solid State Phenomena, Vols. 124-126, pp. 1549-1552, 2007
Online since
June 2007
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Price
$32.00
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