Hydrothermal growth of Ni-based coatings on copper substrates

被引：1
|
作者：
Liu, Fang [1 ]
Zhang, Yong [1 ]
机构：
[1] Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2012年 / 19卷 / 03期
关键词：
nickel-based coatings; fibers; hydrothermal synthesis; copper; microhardness; COMPOSITE COATINGS; NANOSTRUCTURES; BEHAVIOR; NICKEL; ALLOY; CO;
D O I：
10.1007/s12613-012-0548-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ni-based coatings were deposited on copper substrates by a hydrothermal approach. The results showed that a Ni-based cellular microstructure was bridged by "fiber-like" products. A high microhardness of Hv 856 was achieved after 400 degrees C heat treatment, which is nine times that of copper substrates (Hv 95). Nucleation, growth, and fusion of Ni atoms along the linear direction, induced by a linear-type citrate-metal structural "molecule template", led to in-situ growth of Ni-based fibers between cellular microsphercs. After 400 degrees C heat treatment, the precipitation of NiP and Ni3P hard phases contributed to the high microhardness of Ni-based coatings.
引用
收藏
页码：259 / 265
页数：7
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