高温高压下碳纳米管的相转变及金刚石的合成  

PHASE TRANSITION AND DIAMOND SYNTHESIS OF CARBON NANOTUBES UNDER HIGH PRESSURE AND HIGH TEMPERATURE

作　　者：曹立民[1] 张明[1] 张湘义[2,1] 高春晓[1] 周镇华[1] 张君[1] 戴道阳[1] 孙力玲[1] 王文魁[2,1] 

机构地区：[1]中国科学院物理研究所,北京100080 [2]燕山大学,秦皇岛066004

出　　处：《高压物理学报》2000年第1期33-36,共4页Chinese Journal of High Pressure Physics

摘　　要：利用透射电子显微镜 (TEM)和扫描电子显微镜 (SEM)研究了碳纳米管在高压高温下的相转变。研究发现在高压高温条件下碳纳米管是不稳定的 ,在 5 .5GPa压力下 ,770℃到 95 0℃间退火时碳纳米管趋向形成碳纳米葱。在 5GPa、10 0 0℃条件下合成了金刚石。The phase transition of carbon nanotubes under high pressure and high temperature has been investigated by transmission electron microscope and scanning electron microscope.It is found that the nanotubes are unstable under high pressure and high temperature.When being annealed at the temperature range of 770℃ and 950℃ under 5.5GPa,the carbon nanotubes will transform into carbon onions.The diamond is synthesized under the conditions of 1000℃ and 5.0GPa.The mechanism of the phase transition of carbon nanotubes is well discussed.

关 键 词：碳纳米管 高压高温 金刚石 相转变 

分 类 号：O521.23[理学—高压高温物理] O613.71[理学—物理]