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摘要: 详细考察了三氧化二硼在高温高压条件下的相变过程。研究结果表明，在高温高压条件下，三氧化二硼经历了从立方晶系向六方晶系、正交晶系和非晶相的相变。文中还比较详细地讨论了高温、高压两种因素对结构相变的影响，以及静高压熔态淬火方法在非晶态材料制备方面所具有的独到之处。Abstract: This paper describes the transformations of boron oxide B2O3 under high pressure and high temperature. We have found that boron oxide B2O3 with cubic system is transformed into hexagonal and orthorhombic B2O3 under a pressure of 5.0 GPa and a temperature of 800 ℃. Under pressure of 4.0 GPa and temperature of 1000 ℃, cubic B2O3 is transformed into amorphous state, whose colour is white. Moreover, structural changes with increasing temperature and pressure, and method of quenching from a fusing state under high static pressure are discussed.
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Key words:
- high pressure transformation /
- boron oxide B2O3 /
- amorphous /
- high pressure
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Liu Xiaoyang, Zhao Xudong, Su Wenhui. Bull Am Phys Soc, 1993, 38(6): 1576. 张强, 苏文辉. 高压物理学报, 1988, 2: 58. Liu Xiaoyang, Su Wenhui, Zhao Xudong, et al. J Chem Soc, Chem Commun, 1993, 11: 891. Anthong R W. Solid State Chemistry and Its Applications. New York: John Wiley Sons, 1984: 445. Richard Zallen. The Physics of Amorphous Solids. New York: John Wiley Sons, 1983: 2. Turnbull D. Comtemp Phys, 1969, 10: 473. 刘晓旸, 赵旭东, 王一峰, 等. 中国科学B辑, 1994, 24(1): 15. Liu Xiaoyang, Su Wenhui, Zhao Xudong, et al. Mat Lett, 1994, 18(4): 234. -
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