| 不同粉体制备工艺对Ca3Co4O9陶瓷性能的影响 |
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| 引用本文： | 黄凯,苟立,冉均国.不同粉体制备工艺对Ca3Co4O9陶瓷性能的影响[J].化工进展,2008,27(5):757-760. |
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| 作者姓名： | 黄凯 苟立 冉均国 |
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| 作者单位： | 四川大学材料科学与工程学院,四川,成都,610065 |
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| 摘 要： | 采用溶胶凝胶法和化学共沉淀法制备了Ca3Co4O9粉体,并烧结为纯相Ca3Co4O9陶瓷。利用XRD、SEM等方法对陶瓷样品的物相以及断面形貌进行了表征,利用四探针法测量了Ca3Co4O9陶瓷的电导率。试验结果表明化学共沉淀法与溶胶凝胶法粉体相比,制得的Ca3Co4O9陶瓷不仅具有更低的气孔率、线收缩率,而且具有更高的电导率,也是一种制备高性能热电材料粉体的有效方法。
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| 关 键 词： | Ca3Co4O9 溶胶凝胶法 化学共沉淀法 |
| 文章编号： | 1000-6613(2008)05-0757-04 |
| 修稿时间： | 2007年10月24 |
Effect of different preparation processes of powder on properties of Ca3CO4O9 ceramics |
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| HUANG Kai,GOU Li,RAN Junguo.Effect of different preparation processes of powder on properties of Ca3CO4O9 ceramics[J].Chemical Industry and Engineering Progress,2008,27(5):757-760. |
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| Authors: | HUANG Kai GOU Li RAN Junguo |
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| Abstract: | Ca3Co4O9 ceramics were fabricated from powders prepared by the sol-gel and chemical co-precipitation methods.The phase and morphology of the sample were investigated by XRD and SEM.The conductivity of Ca3Co4O9 ceramics was investigated with four-probe conductivity measurement.The results showed that the Ca3Co4O9 ceramics obtained from powders by the chemical co-precipitation method had lower porosity and shrinkage and higher conductivity compared with that obtained by the sol-gel method. |
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| Keywords: | Ca3Co4O9 sol-gel method co-precipitation method |
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