Cold Spraying of Yttrium Based Compound Coatings

Cold spray process enables to fabricate high quality coatings due to solid particle deposition. As a consequence, the deposited coating can avoid high-temperature oxidation, evaporation, phase transformation, thermal stress, and other common problems associated with traditional thermal spray processes. In other words, this process can form pure metallic coatings without oxidation under an atmospheric ambient. On the other hand, there have been several reports about ceramic coating deposition through cold spray process. An unique micro-structured feedstock powder material realized to fabricate thick coatings. However, the reports about the deposition of ceramic thick coatings are only titanium dioxide (TiO2). In this study, yttrium based compound coatings were successfully deposited as the new ceramic materials in cold spray process. The importance of the microstructure of the feedstock powder materials was discussed.