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Effect of Trace Metallic Additives of Al-Fe-X on Microstructure and Properties of Zn Electrodeposits  

예길촌 (영남대학교 재료금속공학부)
김대영 (영남대학교 재료금속공학부)
서경훈 (영남대학교 재료금속공학부)
안덕수 (동부제강 기술연구소)
Publication Information
Journal of the Korean institute of surface engineering / v.36, no.6, 2003 , pp. 444-454 More about this Journal
Abstract
The effect of trace metallic additives of Al-Fe-X on microstructure, glossiness and hardness of Zn electrodeposits was investigated by using sulfate bath. The preferred orientation of Zn deposits with Al-Fe additives was (10 l)(l:3,4,2), while that of Zn deposits with Al-Fe-X(Ni,Co) additives was either (002) or (002)＋(103)ㆍ(104) mixed orientation. The preferred orientation of Zn deposits with Al-Fe-Cr additives changed from (002)+(10 l) to (10 l) orientation with increasing amount of Al additive. The surface morphology of the Zn deposits was closely related to the preferred orientation of the deposits. The glossiness of Zn deposits with Al-Fe additives increased in comparison with that of pure Zn deposit. That of the Zn deposits with Al-Fe-X additives was related to the morphology of the deposits and changed according to type of additives. The hardness of Zn deposits with Al-Fe-X(Ni,Co,Cr) additives was noticeably higher than that of Zn deposits with Al-Fe additives.
Keywords
Zn eledtrodeposits; Metallic additives; Surface morphology; Preferred orientation; Glossiness;
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