Effect of processing conditions on porosity formation in cold gas dynamic spraying of copper

被引:71
|
作者
Zahiri, Saden H. [1 ]
Fraser, Darren [1 ]
Gulizia, Stefan [1 ]
Jahedi, Mahnaz [1 ]
机构
[1] CSIRO, Clayton, Vic 3168, Australia
关键词
cold gas dynamic spray; copper; Mach; particle; porosity;
D O I
10.1361/105996306X124437
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The cold gas dynamics process is a promising low-temperature spray process in which particles are accelerated in a supersonic flow before impacting with substrate to be coated. In this study the effect of spray temperature, spray pressure, and particle size on porosity formation in cold spray coatings are investigated. Results show that an increase in spray temperature and a decrease in particle size lead to a decline in volume fraction of porosity. Furthermore, particle velocity and particle temperature are determined to be the significant parameters for elimination of porosity. A model is proposed for estimation of the volume fraction of porosity for alloy of this study.
引用
收藏
页码:422 / 430
页数:9
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