高压热处理石墨-六角氮化硼微晶混合物的结果分析  

Analysis of Graphite-Hexagonal Boron Nitride (g-hBN) Micro-Crystal Mixture Treated under High-Pressure and High-Temperature

作　　者：罗湘捷[1] 罗伯诚[2] 彭放[1] 陈豪[1] 丁立业[1] 

机构地区：[1]四川大学原子与分子物理研究所,四川成都610065 [2]四川大学原子核科学与技术研究所教育部辐射物理及技术重点实验室,四川成都610064

出　　处：《高压物理学报》2004年第4期359-363,共5页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(59972021)

摘　　要：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。For further research of the regularity of B-C-N material prepared by ball-milling method,the micro-crystal mixture of graphite-hexagonal boron nitride (g-hBN) is heat-treated under the pressure of 45～58 GPa and the temperature of 800 ℃～1 300 ℃.XRD,XPS and FT-IR analysis of the heat-treated products shows:at 4.5 GPa and 800 ℃,there is partial crystallization of hexagonal boron nitride (hBN) in samples,but the graphite keeps the status of micro-crystallization;and at 1 300 ℃,samples not only have crystallization of hBN but also have ternary compound of B-C-N,which is analogous to graphite structure.We considered that the new compound was approximate to BC_3N when we had compared with correlative information of studies.When the pressure is up to 58 GPa and the temperature stays at 1 300 ℃,the changes of result are less.

关 键 词：石墨 氮化硼 混合物 微晶 球磨法 晶状 晶化 GP 结果分析 新化合物 

分 类 号：O642.42[理学—物理化学] TQ163[理学—化学]