화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.15, No.7, 439-443, July, 2005
DOI10.3740/MRSK.2005.15.7.439  Export Citation
기계적 합금화법과 방전 플라즈마 소결법으로 제조된 Al-25Ti-8Mn 금속간 화합물의 산화 거동
Oxidation Behavior of Al-25Ti-8Mn Intermetallic Compound Fabricated by Mechanical Alloying and Spark Plasma Sintering
최재웅†, 김기홍1, 황길호, 홍석준, 강성군
  • 한양대학교 재료공학부
  • 1삼성전기
J.W. Choi†, K. H. Kim1, G.H. Hwang, S.J. Hong, and S.G. Kang
  • Division of Materials Science and Engineering, Hanyang University, Seoul, Korea, 133-791
  • 1Samsung electro-mechanics, Korea
E-mail:
The oxidation behavior and the thermal stability of nanocrystalline Al-25Ti-8Mn intermetallic compound were investigated. [Math Processing Error] intermetallic compound, which has a potential for high temperature structural material, was fabricated by mechanical alloying(MA) with [Math Processing Error] Mn to enhance the thermal stability and ductility. And Al-25Ti-8Mn intermetallic compound was sintered by spark plasma sintering(SPS) at [Math Processing Error] . After sintering process, cubic [Math Processing Error] structure was maintained without phase transformation and the grain size was about 50nm. To investigate the oxidation behavior of the specimens, thermal gravimetric analysis(TGA) was performed at 700, 800, 900, and [Math Processing Error] for 24 h in [Math Processing Error] . As the temperature increased from [Math Processing Error] the weight gain of specimens increased. However at [Math Processing Error] , unlike the oxidation behavior of [Math Processing Error] , the weight gain of specimen decreased drastically and the transition from linear rate region to parabolic rate region occurred rapidly due to the dense [Math Processing Error] .
Keywords:nanocrystalline;oxidation;thermal stability
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