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高压热处理石墨-六角氮化硼微晶混合物的结果分析

DOI: 10.11858/gywlxb.2004.04.012, PP. 359-363

Keywords: 石墨-六角氮化硼,微晶,高温高压,类石墨BC3N

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Abstract:

为了进一步研究用球磨法制备B-C-N物质的规律性,在4.5~5.8GPa压力、800~1300℃温度条件下,对用球磨法获得的石墨-六角氮化硼微晶混合物进行高压热处理。热处理后产物的XRD、XPS及FT-IR测试表明:在4.5GPa、800℃时,样品中出现部分hBN晶化现象,但石墨仍然保持微晶状态;当温度升到1300℃时,样品中不仅存在晶化的hBN,而且出现一种类石墨结构的B-C-N三元化合物。与相关研究资料对比后认为:这一新化合物近似于BC3N。压力增加到5.8GPa而温度保持1300℃时,结果变化不大。

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