表面技術
Online ISSN : 1884-3409
Print ISSN : 0915-1869
ISSN-L : 0915-1869
70 巻 , 11 号
選択された号の論文の7件中1~7を表示しています
小特集/電磁波シールド・電波吸収体の最新動向
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研究論文
  • 鈴木 陽平, 梅田 泰, 阿久津 敏乃介, Christpher E. J. Cordonier, 本間 英夫, 高井 治, 盧 柱亨
    2019 年 70 巻 11 号 p. 566-570
    発行日: 2019/11/01
    公開日: 2019/10/31
    ジャーナル フリー

    Copper has excellent properties that include malleability and conductivity. Therefore, it is used widely in the electronics field. Copper sulfate plating is expanding further in applications that require thick deposits such as heat dissipation boards and bumps for stress relaxation during semiconductor packaging. To improve productivity and to reduce costs in this field, high-speed electroplating using high current density is desirable. For this study, a jet flow device was used for high-speed plating. Furthermore, the plating solution flow and metal ion diffusion were predicted by simulation using the computational fluid dynamics(CFD). Correlation with actual plating behavior was investigated. Velocity distribution analysis of the chamber of a jet flow device confirmed that the plating solution was spread uniformly on the cathode surface. From results of the temperature distribution simulation in the chamber, the supplied amount of copper ions was predicted using the similarity relation of temperature diffusion and mass diffusion. The simulation results coincided with actual plating conditions and predicted the appropriate stirring speed for the copper ion concentration in the plating solution.

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