Microstructure Characteristics of SiC Particle-Reinforced Aluminum Matrix Composites Coatings by Cold Spraying

被引：0
|
作者：
Wang Hongtao [1 ]
Ji Gangchang [1 ]
Chen Xiao [1 ]
Bai Xiaobo [1 ]
Chen Qinyu [1 ]
机构：
[1] Jiujiang Univ, Jiujiang Key Lab Green Remfg, Jiujiang 332005, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2012年 / 41卷
基金：
中国国家自然科学基金;
关键词：
cold spraying; ball milling; aluminum matrix composites; microstructure; ABRASIVE WEAR; POWDER; DEPOSITION; BEHAVIOR; SIZE;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A dense Al/SiCp composite coating with high volume fraction (60%) of nano SiCp reinforcement was fabricated by cold spraying of ball-milled Al-60SiC(p) composite powder. The morphologies evolution of the Al-60SiC(p) composite powder during ball milling and the microstructure and microhardness of the cold-sprayed Al-60SiC(p) composite coating were investigated. The results show that Al particles undergone fracture deformation and nano SiC particles are uniformly distributed in soft Al matrix after ball milling. A dense Al-60SiC(p) composite coating can be fabricated by cold spraying of ball milled composite powder. Nano SiC particles in the cold-sprayed Al-60SiC(p) composites coating exhibit a reasonably uniform distribution. The Hv(0.5) microhardness of the Al-60SiC(p) composite coating is reached up to (5.30 +/- 0.53) GPa due to the enhancement of SiC particles, compared to (0.34 +/- 0.03) GPa for the pure Al bulk.
引用
收藏
页码：460 / 463
页数：4
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