Formation of Al-Ni master alloys using nickel anode
Nickel anode was investigated as a potential anode of aluminium electrowinning for preparation of Al-Ni master alloys.The electrolysis tests were carried out in Na3AlF6-Al2O3 based melts at 940 ℃.The results show that the cell voltage during electrolysis has only minor instability,and there exists NiO phase in electrolyte after 0.5 h electrolysis.Ni content in Al-Ni master alloys increases with increasing the electrolysis time.Concentration limit of Ni in Al-Ni master alloys can be up to 33.8％ (mass fraction).However,substantial corrosion of the Ni-metal substrate is observed,and the oxide scale on the nickel anode after electrolysis is porous and loose that does not prevent corrosion of the substrate.
inert anode Ni-metal anode Al-Ni alloy electrolysis corrosion
CAO Da-li WANG Ji-kun SHI Zhong-ning WANG Zhao-wen MA Lei WANG Hui-hua
School of Materials Science and Engineering,Shenyang Institute of Chemical Technology,Shenyang 11014 Science and Technology Department,Yunnan Metallurgy Group,Kunming 650016,China School of Materials and Metallurgy,Northeastern University,Shenyang 110006,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）