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石墨-六角氮化硼微晶混合物与水高压反应产物分析

DOI: 10.11858/gywlxb.2003.02.005, PP. 106-110

Keywords: 石墨-六角氮化硼,微晶,,高温高压

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Abstract:

利用球磨法制备石墨-六角氮化硼微晶混合物,并在6.1GPa、800~1500℃条件下与水进行高压反应,以便研究用水作触媒合成B-C-N三元化合物的可能性。通过对反应产物的XRD、XPS谱分析发现:高压下随着温度的升高,反应产物中出现再结晶石墨,其晶化程度逐渐提高;但没有出现再结晶六角氮化硼,也未出现立方氮化硼。在球磨不充分条件下,石墨-六角氮化硼混合物的XRD谱没有完全弥散,它们与水高压反应时,能观察到石墨与立方氮化硼分别结晶的现象,但都没有形成B-C-N晶化结构。

References

[1]  Utsumi W, Nakano S, Kimoto K, et al. In Situ X-Ray and TEM Observations on the Phase Transitions of BC2N under Static High Pressures [A]. International Association for Advancement of High Pressure Science and Technology. (Joint Conference: AIRAPT-18 & HPCC-11) Abstracts [C]. Beijing: Physics Society of China, 2001: 222.
[2]  Tateyama Y, Ogitsu T, Kusakabe K, et al. First-Principles Study on High-Pressure Synthesis of Hetero-Diamond BC2N [J]. The Review of High Pressure Science and Technology, 1998, 7: 187-189.
[3]  Yamaoka S, Akaishi M, Kanda H, et al. Crystal Growth of Diamond in the System of Carbon and Water under Very High Pressure and Temperature [J]. Journal of Crystal Growth, 1992, 125: 375-377.
[4]  Kobayashi T. High Pressure Syntheses of Cubic BN Using Water, Urea and Boric Acid Catalysts [J]. J Chem Phys, 1979, 70(12): 5898-5905.
[5]  Nakano S, Akaishi M, Sasaki T. Influence of Water Agent on High-Pressure/High-Temperature Transformation of Graphitic BC2N [J]. Chem Mater, 2001, 13: 350-354.
[6]  Chen W J, Hua Z, Yao B, et al. The Preparation and Conductivity of Amorphous BCN [J]. Acta Metallurgica Sinica, 1999, 35(5): 469-472. (in Chinese)
[7]  陈万金, 华中, 姚斌, 等. 非晶BCN的制备及其导电性 [J]. 金属学报, 1999, 35(5): 469-472.
[8]  Polo M C, Martinez E, Esteve J, et al. Preparation of B-C-N Thin Films by r. f. Plasma Assisted CVD [J]. Diamond and Related Materials, 1998, 7: 376-379.

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