溶胶凝胶法制备Ca_3Co_4O_(9+δ)粉末材料  

Ca_3Co_4O_(9+δ) Powder Synthesized by Sol-gel Method

作　　者：毛昉[1] 程旭东[1] 陈武[1] 励德亮[1] 陈明[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《武汉理工大学学报》2010年第5期39-41,66,共4页Journal of Wuhan University of Technology

摘　　要：采用柠檬酸溶胶凝胶法制备Ca3Co4O9＋δ陶瓷粉末,并采用了TG-DTA、XRD、SEM等方法进行了测试研究。实验表明：溶液的初始pH值在0.5-1.5之间可以成功制备质量良好的干凝胶;干凝胶经750-850℃煅烧后可获得单相Ca3Co4O9＋δ陶瓷粉末。The Ca3Co4O9＋δ ceramic powders fabricated by citrate sol-gel were studied systemically with testing measures of the TG-DTA,XRD and SEM.It is revealed that good quality dried gel can be successfully prepared with pH value between 0.5 and 1.5.The pure Ca3Co4O9＋δ ceramic powders can be obtained by calcinating the former dried gel in 750～850 ℃.

关 键 词：Ca3Co4O9+δ 溶胶凝胶法 PH值 

分 类 号：TF123.7[冶金工程—粉末冶金]