Thermodynamics of electrodeposited Ni-B-SiC composite coatings

来源期刊：中国有色金属学报(英文版)2001年第5期

论文作者：郭忠诚 朱晓云 杨显万

文章页码：800 - 802

Key words：Ni-B-SiC composite coating; φ-pH diagram; electrodeposition

Abstract: The φ-pH diagram of Ni-B-H₂O system was drawn, and the mechanism of electrodepositing Ni-B-SiC composite coatings was discussed. The results show that the deposition of Ni and B occurs prior to that of H₂ because of the over-potential of H₂ evolution on the Fe substrate. Boron can not singly deposit in aqueous solution. Nickel and boron can co-deposit in the form of Ni₄B₃ without evolution of hydrogen when the cathodical potential is kept to be -1.415～-1.700V.