用碳酸氢铵沉淀制备晶状碳酸钇的机理研究  

Research on Mechanism of Preparation of Crystalline Yttrium Carbonate by Precipitation of Ammonium Bicarbonate

作　　者：贺伦燕[1] 李南萍[2] 

机构地区：[1]南昌大学,江西南昌330047 [2]中山大学,广东广州510275

出　　处：《稀有金属与硬质合金》2002年第1期1-5,共5页Rare Metals and Cemented Carbides

摘　　要：在一定的条件下 ,从硫酸钇溶液中用碳酸氢铵沉淀时 ,可制得水合晶状的正碳酸钇或水合的晶状碳酸钇铵复盐。通过化学组成分析、X射线粉末衍射、红外光谱、热分析和扫描电镜等检测手段 。Crystalline hydrated yttrium carbonate and hydrated crystalline ammonium and yttrium carbonate compound are obtained by precipitation of yttrium sulphate solutions with different amount of ammonium bicarbonate under given conditions.The process and mechanism of conversion of amorphous precipitate into crystalline precipitate during precipitation and aging were studied by element anaysis,X-ray powder diffractometry,infra-red spectrometry,thermal analysis and scanning electron microscope.

关 键 词：碳酸氢铵 沉淀 晶状 碳酸钇 

分 类 号：TF845.2[冶金工程—有色金属冶金]