Development of coating technique by high speed particles with velocity of 1,000m/s
Coating (formation of a film on a material) is an extremely important technology for modern industry, as it dramatically improves the heat resistance, corrosion resistance, and wear resistance of materials, essentially creating new materials with performance that did not exist in the past. In this work, a research group headed by Dr. Seiji Kuroda, Unit Director of the High Temperature Materials Unit, National Institute for Materials Science (NIMS), a team led by Dr. Naoyuki Ohno, Director of the Engineering Department of Plasma Giken Co., Ltd., improved the warm spray method, which is a NIMS original coating process, and increased the velocity of the sprayed particles projected on the substrate material to 1,000m/s by achieving a combustion pressure 4 times higher than that in the conventional process. The improved process enables formation of high quality titanium alloy coating films, which had been difficult with the conventional technique.