| 烧结工艺对铝电解NiFe2O4-Cu金属陶瓷阳极性能的影响 |
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| 引用本文： | 秦庆伟,张刚,赖延清,李劼,刘业翔.烧结工艺对铝电解NiFe2O4-Cu金属陶瓷阳极性能的影响[J].武汉科技大学学报(自然科学版),2006,29(5):436-439. |
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| 作者姓名： | 秦庆伟 张刚 赖延清 李劼 刘业翔 |
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| 作者单位： | 1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北,武汉,430081
2. 中南大学冶金科学与工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 采用粉末冶金技术制备出铝电解用NiFe2O4-Cu金属陶瓷阳极，并对烧结工艺进行了研究。研究结果表明，金属Cu与NiFe2O4的润湿性差，NiFe2O4-Cu金属陶瓷的致密化与NiFe2O4陶瓷相的致密化直接相关；一定温度下，延长烧结时间，能够提高金属陶瓷相对密度，但存在金属相溢出风险；在烧结过程中，为防止金属相的氧化和陶瓷相的离解，必须控制一定的氧分压；采用热压技术制备NiFe2O4基金属陶瓷时，陶瓷基体会被石墨模具还原。
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| 关 键 词： | 铝电解 惰性阳极 金属陶瓷 烧结 |
| 文章编号： | 1672-3090(2006)05-0436-04 |
| 收稿时间： | 2006-01-04 |
| 修稿时间： | 2006年1月4日 |
Effect of Sintering Parameters on Properties of NiFe2O4-Cu Cermet Anodes for Aluminum Smelting |
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| QIN Qing-wei,ZHANG Gang,IAI Yan-qing,LI Jie,LIU Ye-xiang.Effect of Sintering Parameters on Properties of NiFe2O4-Cu Cermet Anodes for Aluminum Smelting[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2006,29(5):436-439. |
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| Authors: | QIN Qing-wei ZHANG Gang IAI Yan-qing LI Jie LIU Ye-xiang |
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| Institution: | 1.Wuhan University of Science and Technology, Wuhan 430081, China; 2. Central South University, Changsha 410083, China |
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| Abstract: | The NiF2O4-Cu cermet anodes for aluminum smelting were fabricated by classical powder metallurgical technique, and sintering processes were investigated. The results show that copper has poor wetting characteristics to NiF2O4 phase. Optimal densification of cermet anodes is correlated to the densification of NiF2O4 ceramic phase. The relatively dense samples can be fabricated by controlling powder size. At certain temperature, prolonging sintering time tends to increase the relative densities of cermet anodes. However, sintering time should be controlled to prevent the bleeding out of metal phase. Optimal oxygen level in protecting gas should be adjusted to prevent the oxidation of metal phase and reduction of ceramic phase. Hot pressing technique will lead to local reduction of ceramic in contact with graphite dies. |
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| Keywords: | NiFe2O4 |
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