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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 4    August 2009

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Effects of saccharin on microstructure and property of electro-deposited Ni-Fe alloys
YU Jin-ku(于金库), WANG Ming-zhi(王明智), LI Qun(李  宭), YANG Jun(杨  俊), LIU Lian(刘 恋)

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University,
Qinhuangdao 066004, China

Abstract:The Ni-Fe alloy coatings were prepared by electro-deposited method, and the effects of the saccharin content in the electrolytes on the microstructure of the coatings were studied by using X-ray diffractometry(XRD), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The results show that the saccharin content in the bath affects the plating rates and the current efficiency remarkably. As the saccharin content increases, the grain size of the Ni-Fe alloys decreases. The average grain size of the deposits varies from 13 nm to 10.8 nm as the saccharin content increases from 0 g/L to 8 g/L. Accordingly, the microhardness of the as-cold deformed samples increases from Hv 600 to Hv 656.

 

Key words: Ni-Fe alloys; electron microscopy; microstructure; microhardness

ISSN 1672-7029
CN 43-1423/U

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