Nanocrystalline Copper Coatings Produced by Cold Spraying

被引：20

作者：

Liu, Jingchun ^{[1
]}

Cui, Hua ^{[2
]}

Zhou, Xianglin ^{[1
]}

Wu, Xiangkun ^{[1
]}

Zhang, Jishan ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

METALS AND MATERIALS INTERNATIONAL | 2012年 / 18卷 / 01期

基金：

中国国家自然科学基金;

关键词：

nanostructured materials; coating; microstructure; indentation; cold spraying; NANOSTRUCTURED MATERIALS; MECHANICAL-PROPERTIES; HEAT-TREATMENT; BEHAVIOR; DEPOSITION; COMPOSITE; ALLOY; NANOINDENTATION; DIFFRACTION; FABRICATION;

D O I：

10.1007/s12540-012-0014-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Copper powder was cryomilled for 12 hours to achieve particle size in the range of 2 mu m to 25 mu m, which powder was subsequently used as feedstock for the deposition of nanocrystalline (nc) Cu coating via cold spraying. The as-milled copper powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). The particle size of the cryomilled Cu powder was detected by laser scattering. The microstructure of the coating was analyzed using SEM and scanning transmission electron microscopy (STEM). The XRD and HRTEM analysis showed that the grain size of the cryomilled Cu powder was about 5 to 40 nm. This nanoscale structure was retained after the cold spraying. The nanoindentation analysis showed that the nc Cu coating hardness value reached 3.3 GPa, which was higher than that of its coarse grained counterpart.

引用

页码：121 / 128

页数：8

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