| NiFe2O4/Ag复合材料的制备及其耐蚀和导电性能 |
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| 引用本文： | 张磊,焦万丽,姚广春.NiFe2O4/Ag复合材料的制备及其耐蚀和导电性能[J].功能材料,2006,37(1):123-126. |
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| 作者姓名： | 张磊 焦万丽 姚广春 |
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| 作者单位： | 山东理工大学,材料科学与工程学院,山东,淄博,255049;东北大学,材料与冶金学院,辽宁,沈阳,110004 |
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| 摘 要： | 以Fe2O3、NiO和Ag2O为主要原料,采用固相烧结工艺制备了NiFe2O4/Ag复合材料,用X射线衍射和扫描电子显微镜对材料的组成和微观结构进行了研究,并测量了样品在冰晶石熔盐中的静态热腐蚀速率及其高温电导率.结果表明,复合材料由NiO、NiFe2O4尖晶石和Ag三相组成.随着Ag2O含量的增多,复合材料的致密化程度先增加而后降低,当Ag2O含量为6%时,试样的致密化程度最高.Ag2O的加入在不提高试样在冰晶石熔盐中的静态热腐蚀速率的前提下,提高了试样的高温电导率.
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| 关 键 词： | NiFe2O4尖晶石 Ag2O 复合材料 热腐蚀 高温电导率 |
| 文章编号： | 1001-9731(2006)01-0123-04 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-08-29 |
Preparation, corrosion resistant and conductivity properties of NiFe2 O4/Ag composites |
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| ZHANG Lei,JIAO Wan-li,YAO Guang-chun.Preparation, corrosion resistant and conductivity properties of NiFe2 O4/Ag composites[J].Journal of Functional Materials,2006,37(1):123-126. |
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| Authors: | ZHANG Lei JIAO Wan-li YAO Guang-chun |
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| Affiliation: | 1. School of Material Science and Engineering, Shandong University of Technology, Zibo 255049,China; 2. School of Material and Metallurgy, Northeastern University,Shenyang 110004, China |
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| Abstract: | NiFe2O4/Ag composites were prepared by solid-state sintering technology using Fe2O3, NiO and Ag2 as main precipitant. The NiFe2O4/Ag composites were characterized by means of X-ray diffraction and scanning electron microscope. The static thermal corrosion rate in cryolite melt and the high temperature conductivity were measured. It is found that NiO,NiFe2O4 and Ag compose the composites. With the increase of Ag2O content,the void volume fractions of samples are decrease first and then increase,and when the content of Ag2O is 6%, the sample compact degree is the highest. Ag2O doping reduces the static thermal corrosion rate in cryolite melt and enhances the high temperature conductivity. |
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| Keywords: | NiFe2O4 spinel Ag2O composite thermal corrosion high temperature conductivity |
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