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| Abstract No.: |
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| Title: |
Effect of particle velocity on single Al2O3 particle deposition characteristic in vacuum kinetic spraying
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| Authors: |
Hyungkwon Park* / Division of Materials Science and Engineering, Hanyang University
, South Korea
Juhyuk Kwon / Division of Materials Science and Engineering, Hanyang University, South Korea
Illjoo Lee/ Division of Materials Science and Engineering, Hanyang University, South Korea
Changhee Lee/ Division of Materials Science and Engineering, Hanyang University, South Korea
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| Abstract: |
Vacuum kinetic spray (VKS) system is a thin/thick ceramic coating technology, in which submicron-sized particles are deposited at high speed velocity. Although it is known that particles undergo plasticity and fragmentation during deposition in previous studies, detailed behavior has not been clarified yet. In this regard, we investigate the flight velocity and impact characteristics (deformation/fracture) of Al2O3 particles using experimental and simulation method in order to understand the important factors for successful deposition. The particle velocity with different mass flow was measured by slit-cell method (SCM) experiments, and single particle impact behavior was analyzed using Autodyn program with the measured velocities. In addition, the simulation results were compared and analyzed by the results of individual particle test. On the basis of simulation and experiment analysis, the critical velocity for successful deposition in VKS system was discussed.
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