Superalloy material as alloy anodes for low temperature aluminum electrowinning

摘要：

The superalloys Cu-Ni-Al, Cu-Ni-Fe and Cu-Ni-Cr were studied as anodes for aluminium electrolysis. The alloys were tested for corrosion in acidic electrolyte molten salt and for oxidation in both air and oxygen. The results showed that Cu-Ni-Al anode possess excellent resistance to oxidation and corrosion and the oxidation rates of Cu-Ni-Fe and Cu-Ni-Al anodes were slower than those of pure copper or nickel. During electrolysis, the cell voltage of Cu-Ni-Al anode was affected most by concentration of alumina in cryolite molten salt. The Cu-Ni-Fe anode exhibited corrosion resistence in electrolyte. Comparatively, the Cu-Ni-Cr anode showed poor oxidation resistance to oxidation and corrosion. The testing found that further study is warranted on the use of Cu-Ni-Al and Cu-Ni-Fe alloy anodes.

关键词： superalloy inert alloy anode aluminum electrowinning anti-ozidation corrosion resistance

作者: Shi Zhongning Xu Junli Gao Bingliang Wang Zhaowen Qiu Zhuxian

作者单位: School of Material & Metallugy of Northeastern University,110004,Shenyang,Liaoning,China

会议类型: 国内会议

会议名称: 2004年有色金属冶金及材料第二届国际学术会议

会议地点: 沈阳

会议语种:英文

页码: 154-159

在线出版日期: 2004-09-08（万方平台首次上网日期，不代表论文的发表时间）