组成与粒径对等离子熔融Al2O3-CaO二元微球玻璃化、结构及性能的影响

doi:10.16552/j.cnki.issn1001-1625.2025.0190

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (8): 3031-3041.DOI: 10.16552/j.cnki.issn1001-1625.2025.0190

组成与粒径对等离子熔融Al₂O₃-CaO二元微球玻璃化、结构及性能的影响

周扬成¹, 王翔², 温斌¹, 张继红^1,2,3, 谢俊^1,2,3, 韩建军²

1.武汉理工大学三亚科教创新园,三亚 572000;
2.武汉理工大学先进玻璃材料全国重点实验室,武汉 430070;
3.合浦县硅材料产业技术研究中心,北海 536100

收稿日期:2025-02-21 修订日期:2025-03-28 出版日期:2025-08-15 发布日期:2025-08-22
通信作者: 张继红,博士,副研究员。E-mail:optinfo@whut.edu.cn谢俊,博士,研究员。E-mail:xiejun2006@whut.edu
作者简介:周扬成(2000—),男,硕士研究生。主要从事玻璃微球材料方面的研究。E-mail:2534890964@qq.com
基金资助:
国家自然科学基金面上项目(52372033);武汉理工大学三亚科教创新园开放基金(2022KF0026)

Effects of Composition and Particle Size on Vitrification, Structures and Properties of Plasma Melting Al₂O₃-CaO Binary Microspheres

ZHOU Yangcheng¹, WANG Xiang², WEN Bin¹, ZHANG Jihong^1,2,3, XIE Jun^1,2,3, HAN Jianjun²

1. Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya 572000, China;
2. State Key Laboratory of Advanced Glass Materials, Wuhan University of Technology, Wuhan 430070, China;
3. Hepu Research Center for Silicate Materials Industry Technology, Beihai 536100, China

Received:2025-02-21 Revised:2025-03-28 Published:2025-08-15 Online:2025-08-22

摘要/Abstract

摘要： 玻璃与陶瓷微球作为一种新型微米级特种材料,近年来得到了广泛的研究和应用。本研究使用喷雾造粒设备制备了系列不同组成与粒径的Al₂O₃-CaCO₃初始粉料,并通过等离子熔融方法成功制备了系列Al₂O₃-CaO二元玻璃/陶瓷透明微球。研究结果表明,Al₂O₃-CaO体系球化后,Al₂O₃含量大于50%(摩尔分数,下同)时微球主要为陶瓷态,其主晶相为Ca₃Al₁₀O₁₈、CaAl₂O₄和CaAl₄O₇;当Al₂O₃含量为50%时,可形成玻璃和陶瓷态混合的微球,主晶相为CaAl₂O₄;当Al₂O₃含量为34%时,微球主要为玻璃态,并伴有少量Ca₃Al₂O₆和CaAl₂O₄晶相。随着微球粒径的减小,其玻璃相的含量增加。微球的硬度和弹性模量与组成及微观结构密切相关,最大硬度为10.45 GPa,弹性模量为114.1 GPa,且在形成玻璃微球后降低。²⁷Al核磁共振分析结果表明,随着Al₂O₃含量增加,微球中Al的配位状态从4配位转变为5配位和6配位,粒径大小对其影响很小。

关键词: 铝酸盐, 射频等离子体, 微球, 粒径, 玻璃化

Abstract: As a new type of micron-scale specialty material, glass and ceramic microspheres have been widely studied and applied in recent years. In this research, a series of Al₂O₃-CaCO₃ initial powders with different compositions and particle sizes were prepared by spray granulation equipment, and a series of Al₂O₃-CaO binary glass/ceramic transparent microspheres were successfully prepared by plasma melting method. The results show that after Al₂O₃-CaO system spheroidization, when the Al₂O₃ content is more than 50% (mole fraction, the same below), the microspheres are mainly in ceramic state, and the main crystal phases are Ca₃Al₁₀O₁₈, CaAl₂O₄ and CaAl₄O₇. When the content of Al₂O₃ is 50 %, the mixture of glass and ceramic microspheres can be formed, and the main crystal phase is CaAl₂O₄. When the Al₂O₃ content is 34%, the microspheres are mainly glass state, accompanied by a small amount of Ca₃Al₂O₆ and CaAl₂O₄ crystal phases. As the particle size of the microspheres decreases, the content of the glass phase also increases. The hardness and elastic modulus of the microspheres are closely related to the composition and microstructure. The maximum hardness is 10.45 GPa, and the elastic modulus is 114.1 GPa, which decreases after the formation of glass microspheres. ²⁷Al NMR analysis results show that with the increase of alumina content, the coordination state of aluminum in the microspheres changes from four-coordinated to five-coordinated and six-coordinated, and the particle size has little effect on it.

Key words: aluminate, radio frequency plasma, microsphere, particle size, vitrification

中图分类号:

TQ171.79

周扬成, 王翔, 温斌, 张继红, 谢俊, 韩建军. 组成与粒径对等离子熔融Al₂O₃-CaO二元微球玻璃化、结构及性能的影响[J]. 硅酸盐通报, 2025, 44(8): 3031-3041.

ZHOU Yangcheng, WANG Xiang, WEN Bin, ZHANG Jihong, XIE Jun, HAN Jianjun. Effects of Composition and Particle Size on Vitrification, Structures and Properties of Plasma Melting Al₂O₃-CaO Binary Microspheres[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(8): 3031-3041.

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组成与粒径对等离子熔融Al₂O₃-CaO二元微球玻璃化、结构及性能的影响

Effects of Composition and Particle Size on Vitrification, Structures and Properties of Plasma Melting Al₂O₃-CaO Binary Microspheres

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