Development of solid particle impact deposition process based on near-infrared measurement of supersonic particles

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This study has focused on the development of low temperature particle measurement under solid particle impact process, which is necessary to deposit metal coatings without oxidation and nano-structured cermet coatings. Utilization of near-infrared detectors enabled the detection of low-temperature particles whose in-flight temperatures were considered to be less than 1000 K under a warm spray process. This result can be applied not only to the warm spray process but also to cold spray processes, which have been well studied recently.