Deposition Behavior and Film Property with Different Impact Velocity of Al2O3 Particle in Vacuum Kinetic Spraying System

Monday, May 11, 2015: 10:30 AM
Room 102C (Long Beach Convention and Entertainment Center)
Mr. Hyungkwon Park , Hanyang University, Seoul, South Korea
Mr. Illjoo Lee , Hanyang University, Seoul, South Korea
Mr. Jinyoung Kim , Hanyang University, Seoul, South Korea
Prof. Changhee Lee , Hanyang University, Seoul, South Korea
Vacuum kinetic spraying process is a relatively advanced technology by which dense and thin/thick ceramic film can be fabricated at room temperature. However, the deposition mechanism has not been clarified yet because it is difficult to observe and analyze the severe dynamic process of submicron ceramic particles within several seconds. In this study, the impact behavior of Al2O3 particle of 0.3 mm diameter with different velocities was investigated using numerical and experimental method. The dynamic process was analyzed using computer simulation program, AUTODYN v13.0, and the results were compared with SEM and TEM observation of coating microstructure. Furthermore, the reason of the film property change with various particle velocities was analyzed and discussed with relation to the observed microstructure.
See more of: Cold Spray Metals and Ceramics
See more of: Fundamentals/R&D