Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2004.05a
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- Pages.311-313
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- 2004
WC-Co coating by cold spray deposition
Cold spray를 이용한 WC-Co 코팅
Abstract
WC-12-17%Co powders with nano- and micro-structures were deposited by cold spray process using nitrogen and helium gases. The results show that there is no detrimental phase transformation and/or decarburization of WC by cold spray deposition as expected. It is also observed that nano-sized WC in the feedstock powder is maintained in the cold spray deposition. It is demonstrated that it is possible to fabricate the nano-structured WC-Co coating with low porosity and very high hardness (-2050 HV) by cold spray deposition with reasonable powder preheating.
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