Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure

DENG Wenli; DENG Fuming; ZHANG Peng; ZHOU Leilei; XI Peiyao; MA Xiangdong

doi:10.11858/gywlxb.20170617

Volume 32 Issue 2

Jan 2018

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Chinese Journal of High Pressure Physics > 2018 > 32(2): 023303.

DENG Wenli, DENG Fuming, ZHANG Peng, ZHOU Leilei, XI Peiyao, MA Xiangdong. Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023303. doi: 10.11858/gywlxb.20170617

Citation:

DENG Wenli, DENG Fuming, ZHANG Peng, ZHOU Leilei, XI Peiyao, MA Xiangdong. Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023303. doi: 10.11858/gywlxb.20170617

Citation:

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Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure

doi: 10.11858/gywlxb.20170617

DENG Wenli^{1, 2, 3
,},
DENG Fuming^{1, 2, 3,*
,
,},
ZHANG Peng^{1, 2, 3},
ZHOU Leilei^{1, 2, 3},
XI Peiyao^{1, 2, 3},
MA Xiangdong^{1, 2}

1.
Institute of Superhard Cutting Tool Materials, China University of Mining and Technology(Beijing), Beijing 100083, China
2.
Research Center of High Pressure Materials, China University of Mining and Technology(Beijing), Beijing 100083, China
3.
Jiaozuo Tianbao Huanxiang Machinery Technology Co.Ltd., Jiaozuo 454150, China

Received Date: 17 Jul 2017
Rev Recd Date: 23 Jul 2017

Abstract

Abstract

In the present work, pure polycrystalline cubic boron nitride (PCBN) sintered bodies were synthesized under different high pressure sintering conditions using 10 μm-sized cBN grains.The microstructure of the sintered pure PCBN bodies were investigated using the scanning electron microscope (SEM) and X-ray diffractomer (XRD).The wear ratio and compressive strength of the sintered pure PCBN bodies were tested, and the effects of the sintering pressure, temperature and holding time on the microstructure and properties of sintered pure PCBN bodies were examined.The results show that the factors exerting the most significant influence on the properties of the sintered samples are the pressure, the sintering temperature and the holding time, in order of their degrees of influence.When they are 9 GPa, 1 700 ℃ and 240 s, respectively, the optimal properties of the pure PCBN are achieved, i.e. with the wear ratio as 10 200 and the compressive stress as 2.52 GPa.
- cubic boron nitride (cBN),
- sintered pure PCBN body,
- high pressure and high temperature,
- wear ratio,
- compressive strength

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References(18)

References

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