Effect of beryllium sulfate crystallization temperature on the properties of beryllium oxide
QIN Guosong, YUAN Tiechui, GUAN Jianbo, LI Ruidi
1. State Key Laboratory of Powder Metallurgy, Cntral South University, Changsha 410083, China; 2. China Minmetals Beryllium Co., Ltd, Changsha 410200, China
Abstract：In this paper, the saturated BeSO4 solution at 90 ℃ was cooled and crystallized at 5, 15, and 25 ℃, and then the BeSO4 powder was calcined to obtain BeO powder. The BeO powder was subjected to ball milling, spray granulation, pressing, and sintering to prepare BeO ceramics, and the effects of cooling crystallization temperature on the morphology and particle size of BeO powder, as well as the morphology and properties of BeO ceramics were studied. The results show that the particle size of BeO powder decreases with the decrease of cooling crystallization temperature, and the shape of BeO particles become more uniform and regular. The density of BeO ceramics increases from 2.86 g/cm3 to 2.93 g/cm3, the bending strength increases from 243 MPa to 270 MPa, and the thermal conductivity increases from 247 W/(m·K) to 292 W/(m·K) with the cooling crystallization temperature decreases from 25 ℃ to 5 ℃.
覃国松, 袁铁锤, 管建波, 李瑞迪. 硫酸铍结晶温度对氧化铍性能的影响[J]. 粉末冶金材料科学与工程, 2025, 30(3): 215-223.
QIN Guosong, YUAN Tiechui, GUAN Jianbo, LI Ruidi. Effect of beryllium sulfate crystallization temperature on the properties of beryllium oxide. Materials Science and Engineering of Powder Metallurgy, 2025, 30(3): 215-223.
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