Evaluation of Ni-Fe base alloys as inert anode for low-temperature aluminium electrolysis

作     者：Wei Wei Shujiang Geng Fuhui Wang Wei Wei;Shujiang Geng;Fuhui Wang

作者机构：Shenyang National Laboratory for Materials ScienceNortheastern UniversityNo.3-11 Wenhua RoadShenyang 110819China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第107卷第12期

页      面：216-226页

核心收录：

学科分类：080603[工学-有色金属冶金] 0809[工学-电子科学与技术（可授工学、理学学位）] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by National Natural Science Foundation of China(No.51571059) 

主　　题：Alloy Inert anodes Selective oxidation High temperature corrosion 

摘      要：Isothermal oxidation behaviors of Ni–Fe(wt.%)and of the same alloy with additions of 10 and 15%Cr alloys in the air at 800℃and 900℃and their anodic behaviors in aluminum electrolysis system at 800℃were *** composition morphologies of oxide scales were characterized by XRD,SEM,and *** show that the scales formed on Ni–Fe alloy at both temperatures consisted of an inner(Ni,Fe)Olayer and an outer *** Ni–Fe–10Cr alloy,an external(Ni,Fe)O/FeOlayers and an internal oxidation zone were formed at 800°C,while a continuous CrOlayer forms at the internal oxidation zone/substrate interface at 900°C.A multilayer structure oxide of CrO/(Ni,Fe,Cr)O/(Ni,Fe)O/FeOwas formed on Ni–Fe–15Cr alloy at 800°C,while at 900℃the FeObecomes discontinuous disperses in the(Ni,Fe)Olayer close to the *** in oxidation temperature or Cr content for Ni–Fe–Cr alloys promote the growth of the inner CrOlayer and simultaneously reduce *** 4 h of electrolysis at an anode current density of 0.25 A cm,the oxidation resistance of Ni–Fe–15Cr anode is superior to the Ni–Fe anode.