| Effect of metallic content on mechanical property of Ni/（10NiO-NiFe2O4 ） cermets |
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| 引用本文： | 李劼,张刚,叶绍龙,赖延清,田忠良,孙小刚.Effect of metallic content on mechanical property of Ni/（10NiO-NiFe2O4 ） cermets[J].中南工业大学学报(英文版),2006,13(4):347-352. |
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| 作者姓名： | 李劼 张刚 叶绍龙 赖延清 田忠良 孙小刚 |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering，Central South University，School of Metallurgical Science and Engineering，Central South University，School of Metallurgical Science and Engineering，Central South University，School of Metallurgical Science and Engineering，Central South University，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China，Changsha 410083，China |
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| 基金项目： | 国家研究发展基金;国家自然科学基金;浙江省湖州市自然科学基金 |
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| 摘 要： | 1 INTRODUCTIONThe use of inert or non-consumable anodes forreplacement of consumable carbon anodes in Hall-H啨roult electrolysis cells for the production of alu-minum has been a technical and commercial goalfor many decades .In the present process ,consumable carbon an-odes are used,andthe anode product is CO2. Withaninert anode ,the cell reaction will be :Al2O3=2Al +23O2(1)The basic requirements for aninert anode are :1) to exhibit a lowcorrosion rate in the high tem-perature melts an…
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| 关 键 词： | 炼铝 电解 惰性阳极 NiFe2O4 断裂韧度 耐热冲击性 |
| 文章编号： | 1005-9784（2006）04-0347-06 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-04-15 |
Effect of metallic content on mechanical property of Ni/(10NiO-NiFe2O4) cermets |
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| Li Jie , Zhang Gang , Ye Shao-long , Lai Yan-qing , Tian Zhong-liang and Sun Xiao-gang.Effect of metallic content on mechanical property of Ni/(10NiO-NiFe2O4) cermets[J].Journal of Central South University of Technology,2006,13(4):347-352. |
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| Authors: | Li Jie Zhang Gang Ye Shao-long Lai Yan-qing Tian Zhong-liang and Sun Xiao-gang |
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| Affiliation: | (1) School of Metallurgical Science and Engineering, Central South University, 410083 Changsha, China |
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| 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 7 097 MPa to 4 814 MPa and the
bending strength increases from 110 MPa to 157 MPa, and the fracture toughness reaches the optimal value of 5.11 MPa · m1/2 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 °C. The cermets samples, whose metallic content is 10% and 15%, respectively, exhibit
promising property of thermal shock resistance at 960 °C with six cycles of heating and quenching testing.
Foundation item: Project (2005CB623703) supported by the National Key Fundamental Research and Development Program of China; project (50474051)
supported by the National Natural Science Foundation of China; project (03JJY3080) supported by the Hunan Provincial Natural
Science Foundation |
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| Keywords: | aluminum electrolysis inert anode NiFe2O4 fracture toughness thermal shock resistance |
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