電析法による非晶質Fe-Ni-P合金の作製

抄録

Amorphous Fe-Ni-P alloys were prepared by electrodeposition from a 1-hydroxyethane-1, 1-diphosphonic acid bath. The effects of bath composition on alloy composition and on the range of alloys obtainable in amorphous form were investigated. Because of the surface active property of 1-hydroxyethane-1, 1-diphosphonic acid, the surface of the deposited alloy was smooth and bright, and the critical concentration of phosphorus in alloys in amorphous form was relatively low. The critical P concentration was also lowered from 7.6% by weight to some 5% when the iron content of the deposit was increased to 60% by weight.