Computer simulation of the mechanism for the synthesis of carbonado diamond



Título del documento: Computer simulation of the mechanism for the synthesis of carbonado diamond
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312936
ISSN: 1516-1439
Autores: 1
2

Instituciones: 1Universidade Candido Mendes, Campos dos Goytacazes, Rio de Janeiro. Brasil
2Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro. Brasil
Año:
Periodo: Oct-Dic
Volumen: 9
Número: 4
Paginación: 411-415
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Experimental
Resumen en inglés The synthesis mechanism associated with the formation of carbonado type polycrystalline diamond has been analyzed. This analysis was performed by computer simulation of the field of temperature developed at the moment of graphite transformation into polycrystalline diamond. It was found that during the synthesis of this carbonado diamond, a strong non-steady thermal condition occurs, leading to changes in the thermodynamic equilibrium. As a consequence, a region comprising non-transformed graphite and carbonado with different characteristics is established. An experimental comparison was carried out between the carbonado hardness profile and the field of temperatures. The results show that the higher the temperature attained at local points inside the high-pressure chamber, the higher the hardness of the diamond. The simulation and experimental results indicated that concurrent mechanisms are acting during the carbonado synthesis
Disciplinas: Ingeniería,
Química
Palabras clave: Ingeniería de materiales,
Química de polímeros,
Diamantes sintéticos,
Síntesis química,
Simulación computacional
Keyword: Engineering,
Chemistry,
Materials engineering,
Polymer chemistry,
Chemical synthesis,
Computational simulation
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