摘要
在激活的低压条件下，金刚石气相稳定生长的同时石墨会被腐蚀．这是近二三十年来国际上的一个热力学难题，甚至被认为是“热力学的悖论”．用非平衡热力学耦合理论可以给予很好的解释，并推导出非平衡定态相图的全新概念．在新型相图中金刚石在低压下是稳定相，而石墨被激活成为亚稳相．
,,During continuous diamond growth under activated low pressure conditions spontaneous graphite etching takes place. This phenomena has been considered as a “thermodynamic paradox”. Nonequilibrium thermodynamic coupling theory provides an excellent explanation, and a new phase diagram concept of stationary non-equilibrium states has been derived. In this new type of phase diagram diamond becomes a stable phase, while graphite is activated into a metastable phase under low pressure. Theoretical results agree quantitatively with the experimental data reported in the literature.
出处
《物理》
CAS
1998年第2期77-83,共7页
Physics
基金
国家自然科学基金
国家863高技术资助项目
关键词
热力学
相图
非平衡定态
金刚石
气相生长
激活
,,thermodynamics, phase diagram, stationary nonequilibrium states, diamond
