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Synthesis and Characterization of Thermally Stable B-Doped Polycrystalline Diamond

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Abstract:

In this study we report on the synthesis and characterization of thermally stable polycrystalline diamond (PCD) using Ni-based alloys catalyst as a sintering aid and the B-doped diamond powder in the infiltrating way. The samples were treated at 5.6 GPa and 1200–1480 °C for 10 min in China-type cubic high pressure apparatus. Scanning electron microscopy showed significant intergrowth of the diamond particles sintered in the presence of Ni-based alloy. X-ray diffraction showed the phase change of the samples sintered at the different temperature. Differential thermal analysis (DTA) and thermogravimetric analysis (TG) showed the sample was significantly more heat-resisting compared to conventional PCD. The results showed that the appropriate conditions of thermally stable PCD sintered were 5.6GPa and 1200–1480 °C.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

1191-1194

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.1191

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Online since:

November 2012

Authors:

Hai Liang Huang, Dan Wang, You Jin Zheng, Gui Hong Zuo, Long Cheng Yin, Hong Wei Jiang

Keywords:

B-Doped Diamond, HPHT, Polycrystalline Diamond, Thermally Stable

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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