The Research on Microstructure of Catalyst and Growth Mechanism of Boron-Doped Diamond

Abstract:

The microstructure of catalyst discs and fracture topography of boron-doped diamond blocks are analyzed in this paper. The results show that boron can promote or inhibit the growth of diamond crystal. The battens of metal carbides in catalyst are the main carbon source in the nucleation and growth of diamond. Crystal nucleus can absorb the carbon atoms from metal carbide in catalyst disc, and continually grow. It is resulted that the carbon atoms around the diamond grains in catalyst disc reduce, and the battens of metal carbides are thin. The more diamond grains are produced, the thinner battens of metal carbides in catalyst disc are formed.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 1147-1150
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.1147
• Online since: November 2011
• Authors: Qing Cai Su, Jian Hua Zhang, Long Wei Yin, Mu Sen Li
• Keywords: Boron-Doped Diamond Crystals, Catalyst, Growth Mechanism, High-Pressure, High-Temperature

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