Cold spray process is expected to apply to many industrial fields because the process has the feature with a little heat influence to spray material and gets the uniform coating without oxide in the coating. In this study influence of coating conditions and powder properties on coating properties were studied using low pressure type cold spray system manufactured by Inovati, USA. Aluminum and nickel powders were used as feedstock powders and they were sprayed on SUS304 stainless steel plate in various spray conditions. Particle velocity was measured by High Watch System manufactured by Oseir, Finland. Maximum particle velocity of aluminum using He gas as process gas was faster than using nitrogen gas. Deposit efficiency increases with increasing particle velocity. Although particle strength of nickel was bigger than aluminum one, maximum particle velocity of nickel and aluminum was almost the same. It was consider that the particle temperature affect of deposit efficiency.
