节点文献
Effect of metallic content on mechanical property of Ni/(10NiO-NiFe2O4) cermets
【Abstract】 Ni/ (10NiO-NiFe2O4) cermets were fabricated by using cold pressing-sintering method. The phase composition and effect of metallic content on the mechanical properties such as bending strength, Vickers’ hardness, fracture toughness and thermal shock resistance were studied. The results show that the cermets consist of Ni, NiO and NiFe2O4. Within the range of metallic content from 0 to 17%(mass fraction), the relative density decreases with the increase of metallic content and the decrease of sintering temperature, Vickers’ hardness decreases from 7097MPa to 4814MPa and the bending strength increases from 110MPa to 157MPa, and the fracture toughness reaches the optimal value of 5.11MPa·m 1/2 at the metallic content of about 10%. The residual strength after thermal shock testing falls sharply as the thermal shock temperature difference is above 200℃.The cermets samples, whose metallic content is 10% and 15%, respectively, exhibit promising property of thermal shock resistance at 960℃ with six cycles of heating and quenching testing.
【Key words】 aluminum electrolysis; inert anode; NiFe2O4; fracture toughness; thermal shock resistance;
- 【文献出处】 Journal of Central South University of Technology(English Edition) ,中南工业大学学报(英文版) , 编辑部邮箱 ,2006年04期
- 【分类号】TG148
- 【被引频次】2
- 【下载频次】21