稀土粉体性能的评价体系(Ⅱ):颗粒特性的评价

Characterization System of Rare Earth Powders(Ⅱ):Properties of Particles

稀土粉体 (氢氧化稀土、稀土碳酸盐、稀土草酸盐、稀土氧化物和氟化物等 )的颗粒性能方面的指标对稀土新材料的开发具有重要意义。晶粒特性、表面特性、颗粒特性、颗粒群特性和应用特性等五方面构成了稀土粉体性能的评价体系。本文对颗粒特性的评价进行了讨论 ,颗粒大小分布、颗粒形状、颗粒团聚参数、团聚强度、团聚体结构。

The characterization of rare earth powders,such as rare earth hydroxides,rare earth carbonates,rare earth oxalates and rare earth oxides is important to the synthesis of rare carth new materials.The rare earth powder characterization system is constituent of properties of crystal,surface,particle,powder and usage.Properties of particles,such as particle size distribution,particle shape,agglomeration parameter,fractal structure and porosity are discussed in the paper.