세라믹/금속 이종재료 계면의 기계적 특성에 관한 연구

A Study on Mechanical Characteristics of Interface of Ceramic/Metal Composites

  • 서도원 (전북대학교 대학원) ;
  • 김학근 (전북대학교 대학원) ;
  • 송준희 (전북대학교 기계공학부, 자동차신기술연구소) ;
  • 임재규 (전북대학교 자동차신기술연구소) ;
  • 박찬경 (포항공대 재료금속공학과)
  • 발행 : 2000.04.20

초록

Metal/Ceramic structures have many attractive properties, with great potential for applications that demand high stiffness, as well as chemical and biological stability, thermal and electrical insulation. They are currently in use for mechanical and thermal protection in cutting tool and engine parts. With all their great advantage, ceramics suffer from one major problem they are brittle, and are especially susceptible to cracking from surface contacts. Delamination at the interfaces with adjacent layers is a particularly disturbing problem, and can cause premature failure of a composite system. so determination of adhesive properties of coating is one of the most important problems for the extension of the use of coated materials. In this work, mechanical characteristics of Interface of ceramic/Metal composites are evaluated by means of hardness test, indentation test apparent interfacial toughness and bonding strength test. The interface indentation test provides a relation between the applied load(P) and the length of the crack(a) created at the interface between the coating and the substrate.

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