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

页码：259 / 265

页数：7

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