무가압 침투법에 의해 제조된 $Al-5Mg-X(Si,Cu,Ti)/SiC_p$ 복합재료의 조직 및 마멸특성

Microstructure and Wear Property of $Al-5Mg-X(Si,Cu,Ti)/SiC_p$ Composites Fabricated by Pressureless Infiltration Method

  • 우기도 (전북대학교 신소재공학부, 신소재개발연구소) ;
  • 김석원 (전북대학교 신소재공학부, 신소재개발연구소) ;
  • 안행근 (전북대학교 신소재공학부, 신소재개발연구소) ;
  • 정진호 (동방금속)
  • Woo, Kee-Do (Division of New Materials Engineering & The ResearchInstitute of Advanced Materials Development, Chonbuk National University) ;
  • Kim, Sug-Won (Division of New Materials Engineering & The ResearchInstitute of Advanced Materials Development, Chonbuk National University) ;
  • Ahn, Haeng-Keun (Division of New Materials Engineering & The ResearchInstitute of Advanced Materials Development, Chonbuk National University) ;
  • Jeong, Jin-Ho (Dongbang Special Steel Co.)
  • 발행 : 2000.08.20

초록

Metal matrix composites(MMCs) reinforced with hard particles have many potential application in aerospace structures, auto parts, semiconductor package, heat resistant panels, wear resistant materials and so on. In this work, the effect of SiC partioel sizes(50 and 100 ${\mu}m$) and additional elements such as Si, Cu and Ti on the microstructure and the wear property of $Al-5Mg-X(Si,Cu,Ti)/SiC_p$ composites produced by pressureless infiltration method have been investigated using optical microscopy, scanning eletron microcopy(SEM) with EDS(energy dispersive spectrometry), hardness test, X-ray diffractometer(XRD) and wear test. In present study, the sound $Al-5Mg-X(Si,Cu,Ti)/SiC_p$(50 and 100 ${\mu}m$) composites were fabricated by pressureless infiltration method. The $Al-5Mg-0.3Si-O.1Cu-O.1Ti/SiC_p$ composite with $50 {\mu}m$ size of SiC particle has higher hardness and better wear property than any other composite with $100{\mu}m$ size of SiC particle produced by pressureless infiltration method. The hardness and wear property of $Al-5Mg/SiC_p$(50 and 100 ${\mu}m$) composites were enhanced by the addition of Si, Cu and Ti in Al-5%Mg matrix alloy.

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