Abstract
Electrodeposition of amorphous cobalt-base alloys has been discussed on the basis of an induced codeposition mechanism. According to the polarization curves measured by stationary or rotating ring-disk electrode technique, it seems to be most plausible that the induced codeposition of amorphous cobalt-base alloys proceeds with the preceding formation of a hydrated complex oxide or a complex hydroxide, such as [CoO·xMoO2·yH2O]ad or [CoOH·nTi(OH)2]ad, as an intermediate. The role of this absorbed intermediate as an inhibitor for the uncleus growth process is of great importance for the occurrence of amorphous phase, together with the high activation overpotential achieved by pulsed current.
