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| Effect of V2O5 on Microstructure and Performance of NiFe2O4-based Inert Anodes under Different Sintering Conditions |
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Received:December 10, 2015
Revised:December 11, 2015
Accepted:December 21, 2015
Published Online:May 19, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.06.017 |
| KeyWord:NiFe2O4; inert anodes; V2O5; microstructure; performance |
| Author | Institution |
| DU Jinjing |
西安建筑科技大学 |
| WANG Bin |
西安建筑科技大学 |
| YAO Guangchun |
东北大学 |
| LIU Yihan |
东北大学 |
| LI Linbo |
西安建筑科技大学 |
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| Abstract: |
| V2O5-doped NiFe2O4 spinel material was prepared by two-step cold pressing-sintering process. The effect of V2O5 additives on microstructure and performance of NiFe2O4 spinel was studied under different sintering conditions. The results show that eutectic Ni2FeVO6 is generated after introduction of V2O5 into NiFe2O4 ceramic matrix, resulting in liquid-state sintering and promoting grain growth. Porosity and bending strength of sintered samples drop with increase of V2O5 additive amount. With adding 0.5%V2O5, value of average porosity and bending strength for samples sintered at low temperatures are close to those of un-doped samples under the same preparation condition. Prolonging sintering time in high temperature can reduce average porosity, but abnormal grain growth in ceramic matrix will result in weakening mechanical property of inert anodes. |
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