Ca3Co4O9陶瓷的制备与表征

硅酸盐通报 ›› 2009, Vol. 28 ›› Issue (1): 6-9.

Ca3Co4O9陶瓷的制备与表征

漆小玲;曾令可

华南理工大学材料科学与工程学院,广州,510640

出版日期:2009-02-15 发布日期:2021-01-15

Fabrication and Characterization of Ca3Co4O9 Ceramics

QI Xiao-ling;ZENG Ling-ke

Online:2009-02-15 Published:2021-01-15

摘要/Abstract

摘要： 本实验采用溶胶-凝胶法制备了Ca3Co4O9陶瓷,寻求了其合适的制备工艺,并对陶瓷的显微结构、物相组成、元素组成等进行了表征测试.实验结果表明:煅烧温度为800～900 ℃时均能得到纯相Ca3Co4O9;Ca3Co4O9为取向无规则层片状组织,颗粒尺寸均匀,为2 μm左右;样品的致密度不高,气孔率相对较大.

关键词: 热电材料;Ca3Co4O9陶瓷;溶胶-凝胶法

Abstract: Ca3Co4O9 ceramics were prepared by a Sol-gel method using hydrous calcium and cobalt nitrate as raw materials and citric acid as complexing agent. The phase composition, atomic composition and microstructure of Ca3Co4O9 ceramics were investigated by X-ray diffraction (XRD),energy-dispersive X-ray analysis (EDX) and scanning electron microscope (SEM), respectively. The results show that Ca3Co4O9 single phase can be fabricated at 800～900 ℃. Ca3Co4O9 ceramics contain randomly-oriented plate-shaped grains with layered structure. All the sample are not dense enough and the porosities are relatively large.

Key words: thermoelectric materials%Ca3Co4O9 ceramics%Sol-gel method

中图分类号:

漆小玲;曾令可. Ca3Co4O9陶瓷的制备与表征[J]. 硅酸盐通报, 2009, 28(1): 6-9.

QI Xiao-ling;ZENG Ling-ke. Fabrication and Characterization of Ca3Co4O9 Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2009, 28(1): 6-9.

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