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Microstructure and Tribological Characteristics of AlSi-Al$_2$O$_3$ Composite Coating Prepared by Plasma Spray  

Min Joon-Won (충남대학교 재료공학과)
Yoo Seung-Eul (자동차부품연구원 환경소재연구센터)
Kim Young-Jung (선문대학교 재료공학과)
Suhr Dong-Soo (충남대학교 재료공학과)
Publication Information
Journal of Welding and Joining / v.22, no.5, 2004 , pp. 46-52 More about this Journal
Abstract
AlSi-Al$_2$O$_3$ composite layer was prepared by plasma spray on steel substrate. The composite powder for plasma spray was prepared by simple mechanical blending. The wear resistance of the composite layers and matrix aluminum alloy were performed in terms of size distribution of ceramic particles. Friction coefficients of AlSi were decreased with incorporation of $Al_2$O$_3$. The tribological properties of coated layers were affected by the size of incorporated $Al_2$O$_3$ particle. The reinforcement of $Al_2$O$_3$ particle into aluminum alloy matrix decreased the friction coefficient as well as wear loss.
Keywords
Plasma spray; Aluminum alloy; Ceramic particle; Composite; Friction coefficient; Wear;
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