摘要
采用酸洗除杂、氢氟酸溶解、氨水沉淀、水洗过滤、喷雾干燥,然后在氢气气氛中高温煅烧的还原脱氧工艺,制备出可用于制备靶材的铌氧化物粉体,通过差热分析、XRD、TEM、粒度分布测试等方法对产物脱水、脱氧情况,物相、颗粒大小及微观形貌进行研究,同时对粉体纯度、振实密度及氧含量进行测试。结果表明:产品颗粒呈球形,流动性好,纯度达到99.96%(质量分数)以上,振实密度1.88 g/cm^3,失氧量为粉末中总氧含量(质量)的3.3%,达到靶材原料质量要求,证明了该工艺的可行性。
Niobium oxide powder which can be used for preparing a target material was prepared by adopting a reduction deoxidization process of pickling and impurity removal,hydrofluoric acid dissolution,ammonia precipitation,water washing and filtration,spray drying,and then high-temperature calcination in hydrogen. The dehydration,deoxidation,phase structure,particle size and morphology of the product were studied by differential thermal analysis,XRD,TEM,particle size distribution test and other methods. At the same time,the purity,tap density and oxygen content of the powder were tested. The results show that the product has spherical particles,good fluidity,purity above 99.96%(mass percent),tap density of 1.88 g/cm^3,oxygen loss of 3.3% of the total oxygen content in the powder,which meets the quality requirements of target materials,and proves the feasibility of the process.
作者
高远
彭能
金明亚
唐仁衡
肖世文
王亮亮
GAO Yuan;PENG Neng;JIN Ming-ya;TANG Ren-heng;XIAO Shi-wen;WANG Liang-liang(Guangdong Province Key Laboratory of Rare Earth Development and Application,Guangdong Research Institute of Rare Metals, Guangzhou 510651, China;Guangzhou UVTM New MaterialCo., Ltd., Guangzhou 510880,China)
出处
《粉末冶金工业》
CAS
北大核心
2019年第2期16-20,共5页
Powder Metallurgy Industry
基金
广州市科技创新委员会产学研协同创新重大专项(201604016099)
广东省省级科技计划项目(2017A010103012)
关键词
高纯氧化铌
氢化脱氧
振实密度
靶材
high purity niobium oxide
hydrogenation dehydration
tap density
target material
