掺炭煅烧法制备α-磷酸三钙粉体  

Preparation of alpha tricalcium phosphate powder by mixing method of charcoal-sintering

作　　者：高金睿[1] 张睿[1] 唐乃岭[1] 王志强[1] 

机构地区：[1]大连工业大学化工与材料学院,辽宁大连116034

出　　处：《大连工业大学学报》2010年第5期359-362,共4页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅科技发展基金项目(05L067)

摘　　要：以四水硝酸钙和磷酸氢二铵为主要原料,采用湿化学合成法制备了α-磷酸三钙(-αTCP)粉体,研究了煅烧过程中添加分散剂活性炭防止磷酸三钙在高温煅烧时发生团聚的作用。采用X射线衍射仪、扫描电子显微镜和激光粒度分析仪对样品的物相、显微结构及粒度分布进行观察与分析。结果表明,当煅烧温度为1 320℃时,晶型完全转变,能够制备纯度较高的α-磷酸三钙粉体。活性炭掺量煅烧对α-磷酸三钙的粉体形貌和粒度有很大影响,当m(粉末)∶m(活性炭)=1∶0.5时,煅烧后的α-磷酸三钙粉体颗粒的形态分布更均匀,颗粒的中粒径更小,粒径分布主要集中在1.46μm左右。The tetrahydrated calcium nitrate and diammonium phosphate were used as main raw materials to prepare alpha tricalcium phosphate powder by the wet chemical synthesis method. The effect of mixing activated charcoal on avoid agglomerating was investigated when treated at high temperature. X ray diffraction, the scanning electron microscope and the laser particle sizer have been used for analyzing the samples＇crystalline phase, the microstrueture and the distribution of particle size. The results show that α-TCP powder with higher purity can be prepared when calcining temperature is 1 320 ℃. However, the adding amount of activated charcoal showed the remarkable effect on the micro-morphology and particle size distribution. The particle size distribution pack value was 1.46 μm when the proportion of powder to activated charcoal is 1 ： 0.5.

关 键 词：Α-磷酸三钙 掺碳煅烧 粉体 

分 类 号：TQ050.43[化学工程]