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2260 |
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Wednesday, May 05, 2010, Olivia Room 10:00 AM Modeling and Simulation 1 |
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Improvement of copper coating adhesion strength by sipping particle impact in cold spray |
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Kazuhiko Sakaki* / SHINSHU University, Japan Koichi Takada / Graduate School, Shinshu University, Japan Daiki Yutoh/ Graduate School, Shinshu University, Japan Koichiro Nagata/ Toyoda, Japan Yasuo Shimzu/ Shinshu University, Japan |
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Coating adhesion is a critical factor in cold spray which is a coating technology. It is said that particle impact velocity is a dominant factor of cold sprayed coating property, in addition, particle velocity heavily depend on spray angle. In this study, experiment was conducted to investigate the effect of spray angle, substrate hardness and surface roughness on copper coating adhesion strength and bonding morphology of individual copper particles. Spray angle is varied 6 different angles relation from 30 to 90 degree. Used substrate materials are mirrored or blasted mild steel and aluminum alloy. The result shows that copper coating adhesion strength on mirrored steel substrate is increase with a decrease in spray angle. Deposition morphology of copper particles are vary depends on spray angle. |