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1505 |
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Influence of interface temperature and strain gradients on impact energy model of soft particle on hard sunstrate in kinetic spraying |
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Youlgwun Ji / Kinetic Spray Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang University, Korea Yuming Xiong / Kinetic Spray Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-ku, Korea Sanghoon Yoon/ Kinetic Spray Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-ku, Korea Kicheol Kang/ Kinetic Spray Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-ku, Korea Faisal. F Khan/ Kinetic Spray Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-ku, Korea Changhee Lee/ Kinetic Spray Coating Laboratory (NRL), Division of Materials Science & Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-ku, Korea |
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In this paper, a modified model by introducing interfacial temperature and strain gradient to the kinetic spraying impact process was proposed. In combination with the individual impact test, the model was confirmed to match with experimental phenomena well for the impact of soft particle to hard substrate, such as copper or nickel particle onto SKH51, and aluminum particle onto mild steel substrate. Following the previous impact energy model[1], the bonding of impact particle in kinetic spray process depends on the competition between adhesion energy and rebound energy of incidental particle and substrate. Hence, the bonding mechanisms of kinetic spray impact particle could be well described by a finite element analysis (FEA) basing on this modified impact energy model. Keywords: Kinetic spraying, Impact behavior, Deposition, Adhesion energy, Rebound energy. Reference [1] J. Wu, H.G. Fang, S.H. Yoon, H.J. Kim, C. Lee, Scripta Mater. 54 (2006) 665. |