Anodic Corrosion Behavior of NiFe2O4-Based Cermet in Na3AlF6-K3AlF6-AlF3 for Aluminum Electrolysis

被引：15
|
作者：
Tian, Zhongliang [1 ]
Lai, Yanqing [1 ]
Yang, Shu [1 ]
Li, Jie [1 ]
Hwang, Jiann-Yang [2 ]
Liu, Yexiang [1 ]
机构：
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[2] Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2015年 / 46卷 / 03期
关键词：
INERT ANODES; NICKEL FERRITE; LOWER TEMPERATURE; SYSTEM; PERFORMANCE; SOLUBILITY;
D O I：
10.1007/s11663-015-0328-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A (Cu,Ni)/(10NiO-NiFe2O4) cermet was tested as an inert anode for aluminum electrolysis in Na3AlF6-K3AlF6-AlF3 melt at 1173 K (900 A degrees C), and its corrosion behavior was studied. The results show that the low-temperature Na3AlF6-K3AlF6-AlF3 bath is beneficial, improving the service conditions. With the combined effects of the electrolyte composition and the nascent oxygen during electrolysis, the metal phase (Cu,Ni) at the surface of anode will not be leached preferentially, but be transferred into the aluminates including FeAl2O4, NiAl2O4 and CuAl2O4. This is helpful for the anode to improve its corrosion resistance.
引用
收藏
页码：1257 / 1261
页数：5
相关论文
共 50 条
  • [21] Sintering of (Ni,Mg)(Al,Fe)2O4 Materials and their Corrosion Process in Na3AlF6-AlF3-K3AlF6 Electrolyte
    Xu, Yibiao
    Li, Yawei
    Yang, Jianhong
    Sang, Shaobai
    Wang, Qinghu
    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2017, 48 (03): : 1763 - 1770
  • [22] Sintering of (Ni,Mg)(Al,Fe)2O4 Materials and their Corrosion Process in Na3AlF6-AlF3-K3AlF6 Electrolyte
    Yibiao Xu
    Yawei Li
    Jianhong Yang
    Shaobai Sang
    Qinghu Wang
    Metallurgical and Materials Transactions B, 2017, 48 : 1763 - 1770
  • [23] Preparation of MgO-SnO2-TiO2 Materials and Their Corrosion in Na3AlF6-AlF3-K3AlF6 Bath
    Xu, Yibiao
    Li, Yawei
    Sang, Shaobai
    Ren, Bo
    Qin, Qingwei
    Yang, Jianhong
    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2015, 46 (03): : 1125 - 1132
  • [24] Preliminary testing of NiFe2O4-NiO-Ni cermet as inert anode in Na3AlF6-AlF3 melts
    赖延清
    田忠良
    李劼
    叶绍龙
    刘业翔
    TransactionsofNonferrousMetalsSocietyofChina, 2006, (03) : 654 - 658
  • [25] Preliminary testing of NiFe2O4-NiO-Ni cermet as inert anode in Na3AlF6-AlF3 melts
    Lai Yan-qing
    Tian Zhong-liang
    Li Jie
    Ye Shao-long
    Liu Ye-xiang
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2006, 16 (03) : 654 - 658
  • [26] Preparation of MgO-SnO2-TiO2 Materials and Their Corrosion in Na3AlF6-AlF3-K3AlF6 Bath
    Yibiao Xu
    Yawei Li
    Shaobai Sang
    Bo Ren
    Qingwei Qin
    Jianhong Yang
    Metallurgical and Materials Transactions B, 2015, 46 : 1125 - 1132
  • [27] Direct Preparation of Aluminum-Vanadium Intermediate Alloy Through Electrolysis in Na3AlF6-K3AlF6-AlF3-NaVO3 Molten Salts
    Hu, Xianwei
    Zhang, Yifan
    Shi, Zhongning
    Wang, Zhaowen
    RARE METAL TECHNOLOGY 2024, 2024, : 323 - 331
  • [28] Study on the Electrolysis Expansion of Carbon Cathode in [K3AlF6/Na3AlF6]-AlF3-Al2O3 Low Temperature melts
    Fang, Zhao
    Xu, Pengfei
    Xu, Jian
    Li, Linbo
    Zhu, Jun
    MATERIALS PERFORMANCE, MODELING AND SIMULATION, 2013, 749 : 633 - +
  • [29] Electrical conductivity of (Na3AlF6-40%K3AlF6)-AlF3-Al2O3 melts
    You-guo Huang
    Yan-qing Lai
    Zhong-liang Tian
    Jie Li
    Ye-xiang Liu
    Qing-yu Li
    Journal of Central South University of Technology, 2008, 15 : 819 - 823
  • [30] 熔盐Na3AlF6-K3AlF6-AlF3系中氧化铝的饱和溶解度
    王家伟
    陈朝轶
    靳学利
    有色金属(冶炼部分), 2011, (12) : 22 - 26
12345