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| Abstract No.: |
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Scheduled at:
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Friday, May 23, 2014, Hall H2 1:40 PM
Cold Gas Spraying 4
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| Title: |
The deposition behavior and bonding features of kinetic sprayed mixed Al-Ni binary metallic powders
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| Authors: |
Jaeick Kim* / Hanyangn University, Korea
Gyeongjun Byun / Kinetic Spray Coating Laboratory, Division of Materials Science and Engineering, Hanyang University, Korea
Changhee Lee/ Kinetic Spray Coating Laboratory, Division of Materials Science and Engineering, Hanyang University, Korea
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| Abstract: |
This study investigates the deposition behavior present in kinetic sprayed deposits of mechanically mixed Al-Ni binary metallic powders by associating experimental results with finite element modeling (FEM) to optimize the deposition of binary metallic mixture, which shows distinctive material properties each other. Numerically examined results of deformation behavior and thermo-mechanical response of impacted particles sufficiently explain the resultant interface states and bonding features. Additionally, the observed phenomenological experimental results highly corresponded with the outcomes of FEM. Very dense coating layer with high adhesive bond strength was produced by enhanced tamping effect of relative hard Ni, which involved local melting of softer Al at the Al-Ni interface assisted by well-developed adiabatic shear instability. The highly improved thermal boost-up zone due to softening effect of coating materials caused by powder pre-heating developed the coating properties.
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