Alumina-bonded nano-polycrystalline diamond powder synthesized by detonation sintering

YAN Xianrong; LI Xiaojie; WANG Xiaohong; YAN Honghao; FENG Bo; ZENG Zheyan

doi:10.13394/j.cnki.jgszz.2019.5.0006

Volume 39 Issue 5

Oct. 2019

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Article Navigation > Diamond & Abrasives Engineering > 2019 > 39(5): 26-32

YAN Xianrong, LI Xiaojie, WANG Xiaohong, YAN Honghao, FENG Bo, ZENG Zheyan. Alumina-bonded nano-polycrystalline diamond powder synthesized by detonation sintering[J]. Diamond & Abrasives Engineering, 2019, 39(5): 26-32. doi: 10.13394/j.cnki.jgszz.2019.5.0006

Citation:

YAN Xianrong, LI Xiaojie, WANG Xiaohong, YAN Honghao, FENG Bo, ZENG Zheyan. Alumina-bonded nano-polycrystalline diamond powder synthesized by detonation sintering[J]. Diamond & Abrasives Engineering, 2019, 39(5): 26-32. doi: 10.13394/j.cnki.jgszz.2019.5.0006

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Alumina-bonded nano-polycrystalline diamond powder synthesized by detonation sintering

doi: 10.13394/j.cnki.jgszz.2019.5.0006

1. School of Physics and Electronic Information, Shangrao Normal University, Shangrao 334001, Jiangxi, China;
2. Jiangxi Province Key Laboratory of Polymer Preparation and Processing, Shangrao 334001, Jiangxi, China;
3. Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, Liaoning, China

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Rev Recd Date: 2019-02-09

Available Online: 2022-04-06

Abstract

Abstract

Alumina-bonded nano-polycrystalline diamond was synthesized by detonation sintering. The thermal stability, morphology and crystal structure are analyzed by thermogravimetric analyzer (TGA), scanning electron microscope (SEM) and transmission electron microscopes (TEM). Results show that the nano-polycrystalline diamond has good thermal stability in air with no obvious oxidation and good dispersity, the particle sizes of which are 0.5 to 0.7 μm. The nano-polycrystalline diamond is made up of large particles sized 100 to 200 nm, which are the aggregates formed by 2 to 10 nm alumina tightly bonded nano-diamond particles.
- detonation sintering,
- alumina-bonded,
- nano-polycrystalline diamond,
- thermal stability