Numerical Investigation on Effects of Interactions Between Particles on Coating Formation in Cold Spraying

被引：40

作者：

Yin, Shuo ^{[1
]}

Wang, Xiao-fang ^{[1
]}

Li, Wen-ya ^{[2
]}

Xu, Bao-peng ^{[3
]}

机构：

[1] Dalian Univ Technol, Sch Energy & Power Engn, Dalian 116024, Liaoning, Peoples R China

[2] NW Polytech Univ, Shaanxi Key Lab Frict Welding Technol, Xian 710072, Peoples R China

[3] Kingston Univ, Fac Engn, London SW15 3DW, England

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2009年 / 18卷 / 04期

基金：

中国国家自然科学基金;

关键词：

cold spraying; high-velocity impact; numerical simulation; particle interactions; DEPOSITION EFFICIENCY; VELOCITY; IMPACT; MECHANISM;

D O I：

10.1007/s11666-009-9390-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, an investigation on the effects of interactions between copper particles on coating formation was conducted by using a finite element analysis method to clarify the bonding mechanism in cold spraying. The predicted results reveal that the interactions between particles significantly affect the particle deformation and thus coating formation. When the initial parallel distance between particles is short, particles compress with the generation of gap between them. For the vertical case, the initial distance between particles also has an important effect. Short vertical distance makes the subsequent incident particle deform so weakly that the bonding performance is probably not strong enough to form a coating. Furthermore, for successive impacting particles, the subsequent incident particles will tamp the former deposited particles, causing the coating to be little porous near the surface and denser inside the coating.

引用

页码：686 / 693

页数：8

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