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| Abstract No.: |
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| Title: |
The interaction phenomena between the cold sprayed Cu coatings and the Sn substrate
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| Authors: |
Jun Oh Choi / Ajou University, Republic of Korea
K.H. Ko / Ajou University, South Korea
H. Lee*/ Ajou University, South Korea
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| Abstract: |
The interfaces between the cold-sprayed Cu coatings and the Sn substrates were investigated. Due to the high velocity collisions of relatively hard Cu particles, the intermetallic layers (Cu6Sn5) were found at the interfaces without annealing. In the case of the room temperature coating conditions, the intermetallic compounds (Cu6Sn5) at the interfaces were also found. For the dynamic crystallization by the amorphization and intermixing at the interfaces, it was considered that the bonding mechanism of the cold sprayed coatings were attributed to not also the interlocking of sprayed particles on the blasted substrates but also the interactions between the particles and the substrate by the high velocity collisions (the amorphization and intermixing ? the dynamic crystallization).
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