Preparation of Ni-B Amorphous Alloy Films by Electrodeposition Using a Rotating Electrode and Their Structural Changes

SummaryElectrodeposition of Ni-B group alloys was conducted using a rotary electrode. The changes in the amount of codeposited B and in the hydrogen content that arise from changes in plating conditions, and the resulting structural chnages in the films were examined The following results were obtained: 1. The films prepared using a cylindrical rotating electrode contain a larger amount of codeposited B compared to those prepared in a static bath.2. When the Ni-B amorphous alloy with a B content exceeding 25 at % is prepared using a rotary electrode, the film structure after heat treatment corresponds to the structures of the intermetallic compounds Ni3B and Ni2B in the thermal equilibrium diagram.3. Although the hydrogen content of Ni-B alloy films are influenced by the current density, they correlate most strongly with the amount of codeposited B.