A new assembling method to sinter pure PcBN material

DENG Fuming; WANG Hao; SONG Meijiao; WANG Han; YANG Xing; ZHANG Peng

doi:10.13394/j.cnki.jgszz.2021.1.0005

Volume 41 Issue 1

Feb. 2021

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DENG Fuming, WANG Hao, SONG Meijiao, WANG Han, YANG Xing, ZHANG Peng. A new assembling method to sinter pure PcBN material[J]. Diamond & Abrasives Engineering, 2021, 41(1): 27-31. doi: 10.13394/j.cnki.jgszz.2021.1.0005

Citation:

DENG Fuming, WANG Hao, SONG Meijiao, WANG Han, YANG Xing, ZHANG Peng. A new assembling method to sinter pure PcBN material[J]. Diamond & Abrasives Engineering, 2021, 41(1): 27-31. doi: 10.13394/j.cnki.jgszz.2021.1.0005

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A new assembling method to sinter pure PcBN material

doi: 10.13394/j.cnki.jgszz.2021.1.0005

DENG Fuming^1,2,
WANG Hao^1,2,
SONG Meijiao^1,2,
WANG Han^1,2,
YANG Xing^1,2,
ZHANG Peng^1,3

1. Institute of Super-hard Cutting Tool Materials, China University of Mining and Technology (Beijing), Beijing 100083, China;
2. Research center of high-pressure new materials, China University of Mining and Technology (Beijing), Beijing 100083, China;
3. Beijing BOE Optoelectronics Technology Co., Ltd., Beijing 100176, China

More Information

Rev Recd Date: 2020-11-20

Available Online: 2022-04-06

Abstract

Abstract

A new assembling method was used in pure polycrystalline cubic boron nitride (PcBN) HPHT synthesis chamber. The cBN powder with particle size of 10 μm was used as the raw material. Scanning electron microscope (SEM) and X-ray diffraction (XRD) were used to analyze the microstructure and the phase of the sintered body, and the compactness, the microhardness and the compressive strength were tested as well. Results show that pure PcBN with good properties could be obtained at a relatively lower sintering temperature by using this new assembly method. It is also found that the sample sintered at 7.5 GPa and 1 700 ℃ has the best microstructure density and that its hardness reached 3 992.7 Hv, which is higher than that of the traditional PcBN material. A large number of cBN-cBN particle bonds were formed in the sample, which effectively improves the comprehensive properties of the sintered body.
- pure PcBN,
- assembly method,
- high temperature and high pressure,
- hardness