Cold spray deposition (CS) is a coating process by which coating can be produced by accelerating small solid particles to facilitate the deformation of particle upon impact, in an expanding gas stream in a converging-diverging de Laval type nozzle. CS applications will succeed in depositing of polymers, since without significant heating of the sprayed powder. The CS deposition by using PTFE powder was examined. However, the PTFE powder was not able to feed so that the powder was aggregate. In this report, the stabilization of the powder feed by the mixture of PTFE and inorganic material powders was examined. The powders mixed with PTFE and Al_2O_3 at a specific volume percentage stabilized the feed, and were able to form the PTFE film. The PTFE film that had been obtained by the CS method showed a super-water-repellency.
