Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride

ZHANG Qunfei; XIAO Changjiang; MA Jinming; TANG Lihui; LI Zhengxin

doi:10.19591/j.cnki.cn11-1974/tf.2023110004

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Article Navigation > Powder Metallurgy Technology > 2024 > Accepted Manuscript

ZHANG Qunfei, XIAO Changjiang, MA Jinming, TANG Lihui, LI Zhengxin. Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride[J]. Powder Metallurgy Technology.

Citation:

ZHANG Qunfei, XIAO Changjiang, MA Jinming, TANG Lihui, LI Zhengxin. Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride[J]. Powder Metallurgy Technology.

ZHANG Qunfei, XIAO Changjiang, MA Jinming, TANG Lihui, LI Zhengxin. Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride[J]. Powder Metallurgy Technology.

Citation:

ZHANG Qunfei, XIAO Changjiang, MA Jinming, TANG Lihui, LI Zhengxin. Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride[J]. Powder Metallurgy Technology.

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Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride

School of Materials Science and Engineering, Henan University of Technology, ZhengZhou 450001, China

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Corresponding author: E-mail: zhengxin-li@haut.edu.cn
Received Date: 2023-11-25

Abstract

Abstract

Polycrystalline cubic boron nitride (PcBN) was sintered at the high temperature of 1500 ℃ under the pressure of 5.5 GPa, using cubic boron nitride (cBN) powders as the raw materials, Al powders and Si powders as the binders, and nano-diamond as the additive. The effects of nano-diamond mass fraction on the phase composition, microstructure, density, hardness, fracture toughness, and wear ratio of PcBN were investigated. The results show that, the addition of nano-diamond has the great influence on the performance of PcBN. When the diamond mass fraction is 5%, the relative density of PcBN reaches the maximum as 98.5%. Vickers hardness, fracture toughness, and wear ratio of the PcBN samples increase and then drop as the nano-diamond content increases. When the nano-diamond mass fraction is 5%, the hardness, fracture toughness, and wear ratio of PcBN reach the highest values, which are 47 GPa, 4.89 MPa·m^1/2, and 6350, respectively.
- polycrystalline cubic boron nitride,
- nano-diamond,
- high temperature,
- high pressure,
- mechanical property

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References(19)

References

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