溶滴の扁平過程に及ぼす濡れ性の影響
1999 年 63 巻 1 号 p. 103-111
詳細
1999 年 63 巻 1 号 p. 103-111
Plasma sprayed coatings are formed by a continuous deposition of numerous and molten droplets, which lead to a lamella structure. So that, it is very crucial to understand the interaction between molten droplets and substrates. This report presents the influence of wettability of substrates by molten metal droplets with on flattening degree of splats. Using a free-fall droplets apparatus, the metal Sn, Pb, Cu, and Fe are used for the experiments. Taking an equilibrium contact angle of metals into the energy balance for impingement of molten droplets, the relationship between the theoretical and experimental results shows approximately a good agreement in some Re and We regions.
