ABSTRACT

Roy et al. [38] tested and established the validity of this rate law for Cu-02(g) system in the temperature range of 348-374 K under the action of an externally impressed direct current during film growth by connecting the substrate metal to the negative terminal of a direct current source. Similar mechanism is also reported to be operative during oxidation of chromium-doped copper. Subsequent study by Bose et al. [27] has further confirmed that even at a temperature of 523 K the contribution to the cuprous oxide growth on copper by Wagner's mechanism is hardly 3%.