鉄-ニッケル合金薄膜電着における素地の予備処理と電着初期の異常性について

鉄-ニッケル合金電着に関する研究 (第5報)

抄録

Some observations were made under metallurgical microscope or electron microscope on the surface of the substrates pretreated by various processes and on the initial deposit of iron-nickel alloy thin film.
It was found that more suitable substrate surface for the basis of Fe-Ni alloy electroplating was obtained by thin copper electroplating than by mechanical or chemical polishing. Anomalous phenomena were observed at the early stage of Fe-Ni alloy electrodeposition. At the thickness of about 500Å, the deposited film contained a large amount of iron and the crystals dispersedly appeared. At the thickness of above 1000Å, the film approached to the average composition (Fe/Ni=20/80) with crystals of network structure.
These anomalous phenomena were also proved by the measurement of change in cathodic potential and by the analysis of the composition of deposited film.