| 柠檬酸溶胶—凝胶法制备Ca2Co2O5粉体及结构表征 |
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| 引用本文： | 管浩,焦宝祥,于雷.柠檬酸溶胶—凝胶法制备Ca2Co2O5粉体及结构表征[J].电子元件与材料,2011,30(12):6-8. |
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| 作者姓名： | 管浩 焦宝祥 于雷 |
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| 作者单位： | 盐城工学院材料工程学院,江苏盐城,224051 |
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| 摘 要： | 以Ca(NO3)2·4H2O,Co(NO3)2·6H2O为原料,超纯水为溶剂,柠檬酸为络合剂,采用溶胶—凝胶法制备了Ca2Co2O5粉末,确定了适用于Ca2Co2O5粉体制备的工艺条件,并利用TG-DSC、XRD、FT-IR、SEM和EDX等手段对Ca2Co2O5的热分解过程、物相组成和形貌进行表征.结果表明:干凝胶在...
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| 关 键 词： | 热电材料 溶胶—凝胶法 柠檬酸 Ca2Co2O5粉体 |
Preparation and characterization of Ca2Co2O5 powders by the citrate sol-gel method |
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| GUAN Hao,JIAO Baoxiang,YU Lei.Preparation and characterization of Ca2Co2O5 powders by the citrate sol-gel method[J].Electronic Components & Materials,2011,30(12):6-8. |
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| Authors: | GUAN Hao JIAO Baoxiang YU Lei |
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| Affiliation: | (School of Materials Engineering,Yancheng Institute of Technology,Yancheng 224051,Jiangsu Province,China) |
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| Abstract: | Ca2Co2O5 powders were prepared by the sol-gel method using calcium and cobalt nitrates as raw materials,ultrapure water as solvent and citric acid as complexing agent.The optimal process conditions were determined,and the thermal decomposition mechanism of the precursor,the phase and morphology of the Ca2Co2O5 powders were characterized by TG-DSC,XRD,FT-IR,SEM,and EDX.The results show that Ca2Co2O5 powders can be prepared by calcining the xerogel at 700 ℃ for 36 h.Prepared loose powders are sheet-like structure with an average size of 15-20 μm. |
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| Keywords: | thermoelectric materials sol-gel method citric acid Ca2Co2O5 powders |
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