Acta Metallurgica Sinica (English Letters) ›› 2013, Vol. 26 ›› Issue (2): 173-176.DOI: 10.1007/s40195-012-0236-8

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MCrAlY/TaC Metal Matrix Composite Coatings Produced by  Electrospark Deposition

Yujiang XIE1), Yanhong YANG1), Mingsheng WANG1) and Jian HOU2)   

  1. 1) State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    2) Shenyang Liaohai Equipment Co., Ltd., Shenyang 110003, China
  • Received:2012-12-06 Revised:2013-01-10 Online:2013-04-25 Published:2013-03-14
  • Contact: Yujiang XIE
  • Supported by:

    National Natural Sci­enceFoundation ofChina(No.50901081)

Abstract:

MCrAlY/TaC metal matrix composite coatings with 10, 20 and 30 wt.% TaC have been successfully produced by electrospark deposition (ESD). The effects of TaC content on microstructure, hardness and oxidation behavior of the composite coatings were studied. The results showed that the composite coatings were composed of superfine γ columnar dendrite and large TaC particles dispersedly distributed. The hardness was enhanced but oxidation resistance of the composite coatings was reduced with increasing TaC contents.

Key words: MCrAlY, Metal matrix composite, Coating, Electrospark deposition