無電解Ni-Pめっき膜のノジュールの発生要因 [in Japanese] Origins of Nodules in Electroless Nickel-Phosphorus Deposition [in Japanese]
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The origins of nodule formation in electroless nickel-phosphorus deposition were investigated. It was found that the pretreatment and plating conditions influenced the formation of nodules.<br>Nodules were observed in the fractographs of the depositions depending on changes in the surface morphology of the copper substrate when the plating baths included mono- or di- carboxylic acids. On the other hand, nodules were not observed in the fractographs of the depositions with plating baths that contained hydroxycarboxylic acids.<br>Nodules tended to be less likely to form when the deposition rate was relatively low and the phosphorus content of the deposition was high.
- Jitsumu Hyomen Gijutsu
Jitsumu Hyomen Gijutsu 47(4), 349-355, 1996-04
The Surface Finishing Society of Japan