| Yb2O3或Y2O3掺杂Cu-(NiFe2O4-10NiO)惰性阳极的导电性和耐蚀性 |
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| 引用本文： | 陶玉强,刘建元,李志友,周科朝,谭占秋.Yb2O3或Y2O3掺杂Cu-(NiFe2O4-10NiO)惰性阳极的导电性和耐蚀性[J].中国有色金属学报,2011,21(5). |
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| 作者姓名： | 陶玉强 刘建元 李志友 周科朝 谭占秋 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室,长沙,410083 |
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| 基金项目： | 国家高技术研究发展计划资助项目，国家重点基础研究发展规划资助项目，国家自然科学基金创新团队资助项目 |
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| 摘 要： | 在氧分压约为100 Pa的氮气氛下烧结制备了掺杂Y2O3、Yb2O3的10Cu-(NiFe2O4-10NiO)金属陶瓷,并对其进行导电性能测试和10h(Na3A1F6-Al2O3体系中)铝电解实验.采用XRD、SEM和EDS分析稀土氧化物以及其与陶瓷基体反应产物的分布,考查电解实验后材料表层显微结构变化尤其是金属相的流失情况,评价稀土氧化物的添加对金属陶瓷电解初期腐蚀行为的影响.结果表明:掺杂稀土氧化物均使NiO相呈连通迹象,掺杂Yb2O3金属陶瓷晶粒较未掺杂的粗大,其与陶瓷相反应生成物成点线状分布于NiFe2O4相晶界,Y2O3与陶瓷相反应生成物则分布于NiO与NiFe2O4相间;所制备材料具有半导体特征,随着稀土氧化物的掺杂,材料导电性呈下降趋势;掺杂稀土氧化物尤其是Yb2O3有利于提高材料的耐蚀性能.
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| 关 键 词： | 铁酸镍 导电性 耐蚀性 稀土氧化物 |
Conductivity and corrosion resistance of 10Cu-(NiFe2O4-10NiO)inert anode doped Yb203 or Y2O3 |
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| TAO Yu-qiang,LIU Jian-yuan,LI Zhi-you,ZHOU Ke-chao,TAN Zhan-qiu.Conductivity and corrosion resistance of 10Cu-(NiFe2O4-10NiO)inert anode doped Yb203 or Y2O3[J].The Chinese Journal of Nonferrous Metals,2011,21(5). |
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| Authors: | TAO Yu-qiang LIU Jian-yuan LI Zhi-you ZHOU Ke-chao TAN Zhan-qiu |
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| Affiliation: | TAO Yu-qiang,LIU Jian-yuan,LI Zhi-you,ZHOU Ke-chao,TAN Zhan-qiu(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China) |
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| Abstract: | 10Cu-(NiFe2O4-10NiO) cermets doped Y2O3,Yb2O3 were prepared by sintering in the nitrogen atmosphere with oxygen partial pressure of about 100 Pa.The electronic conductivity of cermets was tested and 10 h(Na3A1F6-Al2O3 system) aluminum experiments were carried out.The distributions of rare earth oxides and the reaction products with ceramic matrix were analyzed by XRD,SEM and EDS.The effects of rare earth oxides on the corrosion resistance of cermets were evaluated by the change of microstructure of the anod... |
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| Keywords: | NiFe2O4 conductivity corrosion resistance rare-earth oxide |
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