Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Mechanical Properties of Metal/Ceramic FGM made by Thermal Spraying Method

용사법에 의해 제작된 금속/세라믹 경사기능 재료의 기계적 특성

  • 김영식 (부경대학교 기계.자동차공학부) ;
  • 남기우 (부경대학교 재료공학과) ;
  • 김현수 (부경대학교 대학원) ;
  • 오명석 (부경대학교 기계.자동차공학부) ;
  • 김귀식 (제주대학교 기계공학과)
  • Published : 1998.12.31
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Abstract

This study was aimed at development of fabrication process of functionally graded materials(FGM), consisting of metal and ceramic by thermal spraying method. NiCrAIY/$Al_2O_3$ FGM were made by using plasma spraying onto the SS400 carbon steel substrate. And mechanical properties such as microhardness, thermal shock resistance and adhesive strength of the coating layer were investigated. Adhesive strength was evaluated by acoustic emission method. It was resulted that NiCrAIY/$Al_2O_3$ FGM made by thermal spraying method showed excellent thermal shock resistance and adhesive strength compared to the other lamellar structures of sprayed coatings and that AE is useful tool to evaluate the defect of thermal sprayed coating layer.

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