G040023 粒子偏平凝固挙動に対する雰囲気圧力の影響([G04002]機械材料・材料加工部門一般セッション(2))

概要

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In this study, the effect of ambient pressure and substrate temperature on flattening behavior of thermal sprayed particles was investigated. Mirror polished SUS304 substrates were preheated in a range from 300K to 550K. Ambient pressure was controlled in a range from 1.5kPa to 101.3kPa. Powder materials, Ti, Cr, Ni and Cu with purity 99%, were sprayed onto the substrate surface to examine the influence of the material physical properties on the flattening. Splat morphology changed from the splash shape to the disk one with decrease of ambient pressure and increase of substrate temperature. The material, which forms oxide easily, has a tendency in forming disk splat preferentially. It was found that wettability of the substrate by the sprayed particles may dominate the flattening.
一般社団法人日本機械学会の論文
2011-09-11