摘要
The φ pH diagram of Ni B H 2O 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 H 2 because of the over potential of H 2 evolution on the Fe substrate. Boron can not singly deposit in aqueous solution. Nickel and boron can co deposit in the form of Ni 4B 3 without evolution of hydrogen when the cathodical potential is kept to be -1.415 ～ -1.700?V.
The phi -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 H-2 because of the over-potential of H-2 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 similar to -1.700 V.
出处
《中国有色金属学会会刊：英文版》
CSCD
2001年第5期800-802,共3页
Transactions of Nonferrous Metals Society of China
基金
Project ( 95B11-5 )supportedbytheScienceFoundationofYunnanProvince
