HEMM Al-SiO2-X 복합 분말을 Al-Mg 용탕에서 자발 치환반응으로 제조된 Al-Si-X/Al2O3 복합재료의 조직 및 마멸 특성

우기도; 김동건; 이현범; 문민석; 기웅; 권의표; Kee Do Woo; Dong Keon Kim; Hyun Bom Lee; Min Seok Moon; Woong Ki; Eui Pyo Kwon

Korean Journal of Materials Research, Vol.18, No.6, 339-346, June, 2008

DOI10.3740/MRSK.2008.18.6.339 Export Citation

HEMM Al-SiO2-X 복합 분말을 Al-Mg 용탕에서 자발 치환반응으로 제조된 Al-Si-X/Al2O3 복합재료의 조직 및 마멸 특성

Microstructure Evaluation and Wear Resistance Property of Al-Si-X/Al2O3 Composite by the Displacement Reaction in Al-Mg Alloy Melt using High Energy Mechanical Milled Al-SiO2-X Composite Powder

우기도^†, 김동건, 이현범, 문민석¹, 기웅¹, 권의표

전북대학교 공과대학 신소재공학부, 공업기술연구센터
¹전북대학교 수소연료전지 특성화 대학원

Kee Do Woo^†, Dong Keon Kim, Hyun Bom Lee, Min Seok Moon¹, Woong Ki¹, and Eui Pyo Kwon

Division of Advanced Materials Engineering & Research Center of Industrial Technology, Chonbuk National University, Chonbuk 561-756, Korea
¹Department of hydrogen and fuel cells engineering specialized graduate school, Chonbuk National University, Chonbuk 561-756, Korea

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High-energy mechanical milling (HEMM) and sintering into Al-Mg alloy melt were employed to fabricate an Al alloy matrix composite reinforced with submicron and micron sized Al2O3 particles. Al-based metal matrix composite (MMC) reinforced with submicron and micron sized Al2O3 particles was successfully fabricated by sintering at 1000oC for 2 h into Al-Mg alloy melt, which used high energy mechanical milled Al-SiO2-CuO-ZnO composite powders. Submicron/micron-sized Al2O3 particles and eutectic Si were formed by in situ displacement reaction between Al, SiO2, CuO, and ZnO during sintering for 2 h into Al-Mg alloy melt and were homogeneously distributed in the Al-Si-(Zn, Cu) matrix. The refined grains and homogeneously distributed submicron/micron-sized Al2O3 particles had good interfacial adhesive, which gives good wear resistance with higher hardness.

Keywords:HEMM;MMC;displacement reaction;sintering

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[5] Lee KB, Kim KW, Lee JB, J. Kor. Inst. Met. & Mater., 9, 367 (1996)

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[9] Tsujikawa M, Hashimoto T, Kawamoto M, J. Jpn. Foundrymen’s Soc., 64, 526 (1992)

[10] Woo KD, Lee HB, Mater. Sci. Eng., 449, 829 (2007)

[11] Levi CG, Abbaschian GJ, Mehrabian R, Metall. Trans., 9A, 697 (1978)