α-Al2O3相变机理及制备工艺研究进展

摘要/Abstract

摘要： α-Al₂O₃在耐火材料、电子材料等多个领域有着极其重要的应用。本文首先介绍了α-Al₂O₃在工业应用方面的评价指标和α-Al₂O₃的相变机理,接着分别从固相合成、液相合成、气相合成三个方面阐述了α-Al₂O₃制备的相关研究进展,对制备过程中影响α-Al₂O₃晶粒微观状态的若干因素,包括煅烧温度、矿化剂类型、pH值及预处理条件等进行讨论。最后指出了当前对α-A1₂O₃成核生长机理研究缺乏的问题,表明明确的成核机理、高纯度α-A1₂O₃的量产和形貌控制技术将会是该领域未来的研究重点和发展方向。

关键词: α-Al₂O₃, 相变机理, 微观形貌, 晶粒尺寸, 煅烧温度, 矿化剂

Abstract: α-Al₂O₃ has important applications in refractories, electronic materials and many other fields. This article first introduces the evaluation index of α-Al₂O₃ in industrial application and α-Al₂O₃ phase transition mechanism. Then the article expounds related research progress of the α-Al₂O₃ preparation, from three aspects that solid phase synthesis, liquid phase synthesis and gas phase synthesis, respectively. The factors which affect the microstructure of α-Al₂O₃ particles during preparation are discussed, including calcination temperature, mineralizer, pH value and pretreatment conditions. Finally, the lack of research on the nucleation growth mechanism of α-Al₂O₃ is pointed out, and indicating that a specific nucleation mechanism, the mass production of high purity α-Al₂O₃ and morphology control technology will be the future research focus and development direction in this field.

Key words: α-Al₂O₃, transition mechanism, micromorphology, particle size, calcination temperature, mineralizer

中图分类号:

TQ133.1

吴宇峰, 张铁军, 张家萌, 毕作振, 雷鸣, 毕科. α-Al₂O₃相变机理及制备工艺研究进展[J]. 人工晶体学报, 2021, 50(1): 199-208.

WU Yufeng, ZHANG Tiejun, ZHANG Jiameng, BI Zuozhen, LEI Ming, BI Ke. Research Progress on Phase Transition Mechanism and Preparation Technology of α-Al₂O₃[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(1): 199-208.

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α-Al₂O₃相变机理及制备工艺研究进展

Research Progress on Phase Transition Mechanism and Preparation Technology of α-Al₂O₃

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