Effect of Metallic Content on Properties of NiFe2O4 Matrix Cermet Inert Anodes for Aluminum Electrolysis

DOI

10.2991/meic-14.2014.193How to use a DOI?

Keywords

NiFe2O4; inert anode; cermet; metallic content; fracture toughness

Abstract

NiFe2O4 matrix cermet inert anodes for aluminum electrolysis were prepared with Cu-Ni mixed powders as toughening metallic phase and 15NiO-85NiFe2O4 as ceramic matrix via powder metallurgy two-step sintering method. The mixed metallic contents varied from 10 to 18 (mass fraction, %) with 2% intervals. The phase composition, microstructure of composite and the effect of metallic content on the density, porosity, fracture toughness and bending strength were studied in details. The results show the densities of cermets increase with metallic content increase while decrease for porosities. The fracture toughness and bending strength first increase and then decrease with the increase of metallic content. When the metallic content was 16%, the maximum values of fracture toughness and bending strength were 105.19MPa and 2.73MPa•m1/2 respectively. The results imply that the cermet containing 16% metals should be further studied to confirm the optimal metallic content for NiFe2O4 matrix cermet inert anodes used in aluminum electrolysis.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhigang Zhang
AU  - Jianrong Xu
AU  - Hongjie Luo
AU  - Guangchun Yao
PY  - 2014/11
DA  - 2014/11
TI  - Effect of Metallic Content on Properties of NiFe2O4 Matrix Cermet Inert Anodes for Aluminum Electrolysis
BT  - Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 864
EP  - 867
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-14.2014.193
DO  - 10.2991/meic-14.2014.193
ID  - Zhang2014/11
ER  -