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Effect of Pulse Plating on Hardness of Brass-Alumina Nanocomposite  

오영주 (한국과학기술연구원 금속공정연구센터)
안재우 (대진대학교 공과대학 신소재공학과)
안종관 (한국지질자원연구원 자원활용연구부)
이만승 (목포대학교 공과대학 신소재공학과)
Publication Information
Journal of the Korean institute of surface engineering / v.35, no.3, 2002 , pp. 158-164 More about this Journal
Abstract
Nanocomposites consisting of a nanocrystalline brass matrix (grain size ; 20-100nm) with sub-micron sized Al2O3 particles (60-200nm) were prepared by pulsed current electrodeposition. The microhardness of the nanocomposite with a grain size of 90-100nm was approximately 1.7 times higher than that of a comparable electrodeposit with no particles. However, significant variations in microhardness were not observed between the nanocomposites with grain sizes of 20 nm and the comparable electrodeposit.
Keywords
Brass-alumina; hardness; Orowan particle strengthening; Hall-Petch relationship; pulsed current electrodeposition;
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