Diamond Growth Condition at Low-Pressure Influenced by Addition of Oxygen

Abstract

Abstract: Diamond growth using CO-H₂and CO-O₂-H₂as input gases was studied based on the non-equilibrium thermodynamic coupling model. The phase diagrams of diamond growth with different content of oxygen in the reaction system were calculated. The diagrams have diamond growth regions, which were different from the diagrams based on classical equilibrium thermodynamics. Also, the diamond growth regions at different system pressures and different contents of oxygen were discussed in this paper. These results can guide the experimental study on diamond growth at low-pressure because the theoretical phase diagrams coordinate very well with the experimental results which had been published.

Key words: Non-equilibrium thermodynamics, Phase diagram, Diamond

CLC Number:

O642

TrendMD:

LIU Zhi-Jie, WAN Yong-Zhong, ZHANG Wei, ZHANG Jian-Yun, WANG Ji-Tao . Diamond Growth Condition at Low-Pressure Influenced by Addition of Oxygen[J]. Chem. J. Chinese Universities, 1998, 19(7): 1140.

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Diamond Growth Condition at Low-Pressure Influenced by Addition of Oxygen

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