[19p-P6-1~17] 6.4 Thin films and New materials

[19p-P6-2] Heat-treatment effect of nickel films electroplated in microbubbles

〇Shiho Imi¹, Takahiro Huruhashi², Yoshiyasu Yamada², Hiroaki Usui¹, Shoji Ichihara¹ (1.Tokyo Univ.Agricul. &Technol., 2.Yamada. Co. Ltd)

Keywords:plating

Nickel films were prepared in Watt bath added with microbubbles, and their Vickers' hardnesses were measured in the as-deposited state and after annealing. Higher hardnesses were obtained by depositing the films in the presence of microbubbles. The hardness increased by annealing to films to temperatures up to 200^oC. On the other hand, annealing at 300^oC resulted in decrease of hardness.