セラミックス被覆加熱面上における単一液滴の蒸発挙動と被覆層厚さの影響

概要

論文の詳細を見る
Vaporization phenomena of a single liquid droplet on a hot stainless steel surface coated with flame-sprayed zirconia were investigated experimentally. Coating thickness of the test surface was in the range from 0.18 to 0.92 mm. Lifetime curves for several pure liquid drops were measured at surface temperatures up to 1100 K, and time-averaged heat flux transferred from the surface to the drop during its lifetime was analyzed. The results show that the extent of the wide temperature range within which the drop remained in direct contact with the surface and vaporized quickly was kept almost constant for thicknesses of more than about 0.3 mm owing to low thermal conductivity of the coating layer. The quantity of heat transferred from the surface during a given period of time, calculated from one-dimensional analysis, also showed a similar dependency on the coating thickness.
一般社団法人日本機械学会の論文
1993-10-25