電気めっきと無電解めっきを併用したニッケルーリン合金多層膜の作製

概要

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The nickel phosphorus alloy multilayer film was made by using both electroplating and electroless plating together from a single bath including phosphinic acid and nickel sulfate. The compositions of the nickel phosphorus alloy made by electroplating and by electroless plating from the same bath were different under suitable plating conditions. The multilayer film was made on a copper substrate by alternate continuous electroplating and electroless plating from that single bath. After bending that film with copper substrate in the liquid nitrogen to break the film and make the cross section, the film was examined. An SEM and EPMA examination of the cross section confirmed that the film was a multilayer of two kinds of nickel phosphorus alloys, and the phosphorus density of each layer was different. In addition, it was confirmed by XRD that the multilayer consisted of two types of layers, a crystalline one and an amorphous one. According to the observation of the structure of the cross section by SEM, it seems very likely that the strength of each layer was different.
一般社団法人表面技術協会の論文
2006-11-01