Thermodynamic approach to the paradox of diamond formation with simultaneous graphite etching in the low pressure synthesis of diamond
NM Hwang, DY Yoon - Journal of crystal growth, 1996 - Elsevier
In spite of the critical handicap from the thermodynamic point of view, the atomic hydrogen
hypothesis is strongly supported by experimental observations of diamond deposition with
simultaneous graphite etching. Thermodynamic analysis of the C H system showed that
at∼ 1500 K, carbon solubility in the gas phase is minimal and thus, the equilibrium fraction
of solid carbon is maximal. Depending on whether gas phase nucleation takes place or not,
the driving force is for deposition or for etching of solid carbon below∼ 1500 K for the input …
hypothesis is strongly supported by experimental observations of diamond deposition with
simultaneous graphite etching. Thermodynamic analysis of the C H system showed that
at∼ 1500 K, carbon solubility in the gas phase is minimal and thus, the equilibrium fraction
of solid carbon is maximal. Depending on whether gas phase nucleation takes place or not,
the driving force is for deposition or for etching of solid carbon below∼ 1500 K for the input …
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