電析法によるFe-W合金皮膜の非晶質化機構の考察

抄録

Fe-W alloy films were prepared by electrodeposition. Both amorphous and crystalline structure can be formed by controlling electrodeposition conditions. The effects of bath temperature and current density on their amorphization were investigated. Films with W content beyond a certain critical value W_L were amorphous in structure, and the value of W_L was affected by both bath temperature and current density. The Fe-W crystalline films prepared by electrodeposition were found to be substitutional solid solutions. The Fe-W amorphous films were subjected to annealing and DTA analysis, and information about amorphous structures and their energy states were obtained. A mechanism for the amorphization of Fe-W alloy films by electrodeposition is suggested based on the experimental results obtained.