硫酸铍结晶温度对氧化铍性能的影响

doi:10.19976/j.cnki.43-1448/TF.2025010

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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 ℃.

Key words： beryllium oxide powder sulfuric acid method cooling crystallization beryllium sulfate beryllium oxide ceramic

Received: 05 February 2025 Published: 28 July 2025

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	QIN Guosong
	YUAN Tiechui
	GUAN Jianbo
	LI Ruidi

Cite this article:

QIN Guosong,YUAN Tiechui,GUAN Jianbo, et al. Effect of beryllium sulfate crystallization temperature on the properties of beryllium oxide[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(3): 215-223.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2025010 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I3/215

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