Manufacturing and oxidation behavior of silicide-based nanocomposite coatings on refractory metals by displacement reaction

Authors
Yoon, Jin-KookKum, DongwhaHong, Kyung-Tae
Issue Date
2007
Publisher
TRANS TECH PUBLICATIONS LTD
Citation
5th International Conference on Processing and Manufacturing of Advanced Materials, v.539-543, pp.135 - +
Abstract
The microstructure and oxidation resistance of MSi2-SiC or MSi2-Si3N4 nanocomposite coatings (M = Mo, W, Nb, Ta) on M substrates formed by displacement reactions between M-carbides or M-nitrides and silicon, respectively, was investigated. Present study demonstrated that the crack density formed in the MSi2-base nanocomposite coatings due to mismatch in the coefficient of thermal expansion between nanocomposite coatings and M substrates could be controlled by adjusting the volume fraction of the SiC or Si3N4 reinforcing particles with the low CTE values. The high- and low-temperature oxidation resistance of nanocomposite coatings was superior to that of monolithic MSi2 coatings.
ISSN
0255-5476
URI
https://pubs.kist.re.kr/handle/201004/116446
DOI
10.4028/www.scientific.net/MSF.539-543.135
Appears in Collections:
KIST Conference Paper > 2007
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