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投稿时间：2014-12-26 修订日期：2014-12-29 录用日期：2014-12-30 网络发布日期：2015-04-21
投稿时间：2014-12-26 修订日期：2014-12-29 录用日期：2014-12-30 网络发布日期：2015-04-21
中文摘要: 研究了半石墨质(HC35)、全石墨质(HC100)和石墨化(SMH)三种工业阴极碳块的孔隙结构对电阻率的影响。结果表明，HC35的孔隙形状因子较大，而SMH的平均孔径较大，但二者孔隙尺寸分布情况相似；HC100具有较小平均孔径和孔隙形状因子及最窄孔径尺寸分布范围。三种阴极碳块孔隙结构特征的差异导致三者表现出不同的阻—温稳定性。SMH电阻率最小，阻—温稳定性最好；HC100电阻率介于HC35和SMH之间，但阻—温稳定性最低。此外，三种典型工业阴极产品的室温电阻率(ρ)与孔隙率(ε)的关系可量化表达为：ρ=ρ0(1?ε)?4.63。
Abstract:The effects of porous structures on resistivity of three industrial cathodes, i.e. semi-graphitic (HC35), full-graphitic (HC100) and graphitized (SMH), were investigated. The results show that HC35 is the highest in the aspect ratio and SMH is the biggest in the mean diameter, while both have similar values in pores size distribution. HC100 shows the least value in aspect ratio, mean diameter and pores size distribution. The variation in porous structure for the three cathodes may result in difference in their temperature dependence of resistivity (TDR). SMH has the lowest resistivity and the most stable TDR, while HC100 has middle resistivity but the lowest TDR. The relationship between ambient resistivity (ρ) and open porosity (ε) can be quantitatively described by the model of ρ=ρ0(1?ε)?4.63 for three typical carbon cathodes used in aluminum industry.
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基金项目:国家自然科学基金资助项目(51434005)；教育部高等学校博士学科点专项科研基金项目(20110006110003)
| 作者 | 单位 | |
| 朱骏 | 北京科技大学冶金与生态工程学院 | zhu330@sohu.com |
| 薛济来* | 北京科技大学冶金与生态工程学院 | jx@ustb.edu.cn |
| 陈通 | 北京科技大学冶金与生态工程学院 | |
| 李想 | 北京科技大学冶金与生态工程学院 |
| Author Name | Affiliation | |
| Zhu Jun | School of Metallurgical and Ecological Engineering,University of Science andTechnology Beijing | zhu330@sohu.com |
| Xue Jilai | jx@ustb.edu.cn | |
| Chen Tong | ||
| Li Xiang |
引用文本：
朱骏,薛济来,陈通,李想.孔隙结构对铝用碳阴极材料电阻率的影响[J].有色金属（冶炼部分）,2015(5):29-32.
Zhu Jun,Xue Jilai,Chen Tong,Li Xiang.Effects of Porous Structures on Electrical Resistivity of Carbon Cathodes for Aluminum Reduction cells[J].Nonferrous Metals (Extractive Metallurgy),2015(5):29-32.
朱骏,薛济来,陈通,李想.孔隙结构对铝用碳阴极材料电阻率的影响[J].有色金属（冶炼部分）,2015(5):29-32.
Zhu Jun,Xue Jilai,Chen Tong,Li Xiang.Effects of Porous Structures on Electrical Resistivity of Carbon Cathodes for Aluminum Reduction cells[J].Nonferrous Metals (Extractive Metallurgy),2015(5):29-32.
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