| BaO掺杂对10NiO-NiFe2O4复合陶瓷导电性能的影响 |
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| 引用本文： | 何汉兵,黄伯云,李志友,周科朝. BaO掺杂对10NiO-NiFe2O4复合陶瓷导电性能的影响[J]. 功能材料, 2009, 40(4) |
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| 作者姓名： | 何汉兵 黄伯云 李志友 周科朝 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室,湖南长沙,410083;中南大学粉末冶金国家重点实验室,湖南长沙,410083;中南大学粉末冶金国家重点实验室,湖南长沙,410083;中南大学粉末冶金国家重点实验室,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)资助项目(2005CB623703);;国家自然科学创新团队资助项目(50721003);;国家高技术研究发展计划(863计划)资助项目(2008AA030501) |
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| 摘 要： | 利用冷压-烧结技术制备了BaO掺杂的1ONiO-NiFe2O4复合陶瓷,研究了BaO掺杂量对1ONiO-NiFe2O4复合陶瓷物相组成及电导率的影响.结果表明,当BaO掺杂量为O～4%(质量分数)时,烧结样品中主要含有NiO和NiFe2O4两种,BaO促进了致密化烧结,降低了烧结温度;TG-DSC分析发现,在303～1233K温度范围内,1ONiO-NiFe2O4陶瓷在空气气氛中先吸氧后失氧;导电率测试表明,掺杂BaO能显著提高材料的高温电导率,且掺杂0.5%样品在1233K时材料达到最大电导率11.76S/cm,是未掺杂样品的12.8倍.
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| 关 键 词： | 1ONiO-NiFe2O4复合陶瓷 BaO掺杂 惰性阳极 铝电解 电导率 |
Effect of adding BaO on electrical conductivity of 10NiO-NiFe_2O_4 composite ceramics |
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| HE Han-bing
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HUANG Bai-yun
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LI Zhi-you
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ZHOU Ke-chao. Effect of adding BaO on electrical conductivity of 10NiO-NiFe_2O_4 composite ceramics[J]. Journal of Functional Materials, 2009, 40(4) |
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| Authors: | HE Han-bing
HUANG Bai-yun
LI Zhi-you
ZHOU Ke-chao |
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| Affiliation: | State Key Laboratory of Powder Metallurgy;Central South University;Changsha 410083;China |
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| Abstract: | The BaO doped 10NiO-NiFe2O4 composite ceramics were prepared with the cold isostatic pressing-sintering process,the effects of BaO content on the phase composition and electrical conductivity of 10NiO-NiFe2O4 composite ceramics were studied.The results show that the samples are mainly consisted of NiO and NiFe2O4 when content of BaO is 0-4%(mass fraction),BaO is important to accelerate the sintering densification and reduce sintering temperature.The analysis of TG-DSC find,the 10NiO-NiFe2O4 composite cerami... |
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| Keywords: | 10NiO-NiFe2O4 composite ceramics BaO doping inert anode aluminum electrolysis electrical conductivity |
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