【摘要】 用氨水或碳酸氢铵与氯化钇溶液反应生成沉淀 ,煅烧沉淀制备了 D50 为 0 .45μm和 2～ 1 0μm的各种粒径的氧化钇粉末。分别采用 Coulter Multisizer 和90 Plus粒度仪测定微米和亚微米级氧化钇粉体粒度。研究了分散剂、待测样品量、分散时间等因素对亚微米级氧化钇粉体粒度测量精度的影响更多还原

【Abstract】 Some processes to produce yttrium oxide using ammonia bicarbonate and ammonia as precipitant have been studied. The particles sizes of yttrium oxide powder obtained by these methods are from 0.4 to 10 μm. The measurement of rare earth oxide particle size has been studied.更多还原