摘要
叙述了一种新的制取高比表面积钽(铌)粉末的方法,即用至少一种选自Mg, Ca, Sr, Ba 和 Ce的碱土金属卤化物加碱金属还原氧化钽(铌)的方法。以氯化钙加钠还原氧化钽为例,得到了比表面积大,化学杂质低的钽粉。这种原生粒子达到纳米级的钽粉原粉经过热团化、降氧等后续处理得到电容器用团化钽粉。对该钽粉进行了湿式电性测试。
A new process for making high surface area tantalum and/or niobium powders via the reduction of the corresponding tantalum and/or niobium oxides is presented in the work, wherein the reduction is carried out by reacting the tantalum and/or niobium oxides with at least one metal halide selected from the group consisting of halides of Mg, Ca, Sr, Ba and Ce, and an alkali metal at elevated temperature so as to form the tantalum and/or niobium powders. As an embodiment, high surface area, high purity tantalum p...
出处
《矿业研究与开发》
CAS
2003年第S1期6-8,共3页
Mining Research and Development
关键词
比表面积
钽粉
铌粉
氧化钽
氧化铌
还原
surface area
tantalum powder
niobium powder
tantalum oxide
reduction
