Morphology Evolution of α-Al2O3 from γ-Al2O3 Precursor with CaF2 Additive

摘要：

　　Spherical-like α-Al2O3 powders were prepared by calcination of industrial γ-Al2O3 with 1 wt%CaF2 at high temperatures.Influences of ball milling pretreatment and the additive on the morphological evolution of α-Al2O3 powders have been studied.It is found that the morphology,grain size and grain size distribution of α-Al2O3 powders are closely related to the morphology of γ-Al2O3 precursor,CaF2 additive and calcination temperature.α-Al2O3 grains with good sphericity of about 0.5μm are obtained by the calcination of γ-Al2O3 precursor with 1 wt%CaF2 at 1400 ℃ for 3 h.

关键词： industrial γ-Al2O3 ball milling pretreatment CaF2 additive morphology evolution spherical α-Al2O3

作者: LIU Luoqiang ZHU Lingling ZHANG Xing DING Dafei LI Hongxia

作者单位: School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China State Key Laboratory of Advanced Refractories of China,Sinosteel Luoyang Institute of Refractories R

会议类型: 国际会议

会议名称: Conference on Refractories International 2018, CRI2018)(2018国际耐火材料学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-5

在线出版日期: 2018-10-17（万方平台首次上网日期，不代表论文的发表时间）