Anti-corrosion properties of Fe-Ni metal anode for aluminium electrolysis
Fe-Ni metal anode was fabricated by cold-press sintering.Fe,Ni as the main raw materials in Ar atmosphere. The corrosion behavior of Fe-Ni metal anode was studied by electrolysis testing. The electrolyte is consist of Na3AlF6(87 wt.%),LiF(3 wt. %),CaF2 (5 wt.%) and Al2O3(5 wt.%) which correspond to molecular ratio of 2.1. The results indicate that physicochemical dissolution progress occurs in the metal anode. The microstructure and composition of corrosion layer was analyzed by SEM and XRD. The corrosion mecha nism of the metal anode has also been suggested by the phase composition analyses of corrosion layer.NiFe2O4 and Fe2O3 found in the ox ide layer of anode and can prevent the molten cryolite from corroding further,and decrease the corrosion rate.
aluminium electrolysis Fe-Ni alloy metal anode corrosion
CAO Xiaozhou WANG Zhaowen HU xianwei SHI Zhongning YAO Guangchun ZHANG Tingan
Metallurgy Source & Environmental Engineering Institute,School of Material & Metallurgy,Northeastern Metallurgy Source & Environmental Engineering Institute,School of zaterial & Metallurgy,Northeastern
国际会议
The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)
浙江嘉兴
英文
707-710
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）