Thermal explosion reaction synthetic coating on diamond surface

SUN Changhong; LIANG Baoyan; ZHANG Wangxi

doi:10.13394/j.cnki.jgszz.2021.0098

Volume 42 Issue 1

Mar. 2022

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SUN Changhong, LIANG Baoyan, ZHANG Wangxi. Thermal explosion reaction synthetic coating on diamond surface[J]. Diamond & Abrasives Engineering, 2022, 42(1): 47-55. doi: 10.13394/j.cnki.jgszz.2021.0098

Citation:

SUN Changhong, LIANG Baoyan, ZHANG Wangxi. Thermal explosion reaction synthetic coating on diamond surface[J]. Diamond & Abrasives Engineering, 2022, 42(1): 47-55. doi: 10.13394/j.cnki.jgszz.2021.0098

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Thermal explosion reaction synthetic coating on diamond surface

doi: 10.13394/j.cnki.jgszz.2021.0098

1.
Department of Materials Engineering, Zhengzhou Technical College, Zhengzhou 450010, China
2.
Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou 450007, China

More Information

Received Date: 2021-09-18
Accepted Date: 2021-12-07
Rev Recd Date: 2022-01-04

Available Online: 2022-03-17

Abstract

Abstract

Using M(Mn or Cr)/Al/B/diamond powders as raw materials, the multicomponent composite coatings were formed on the surface of diamond by thermal explosion reaction technology. The effects of two raw material systems and different Al contents on the phase compositions and the microstructures of ceramic matrix and coatings were studied by X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer. The results show that under the protection and detonation of N₂, the thermal explosion reaction of Cr/Al/B/diamond powder forms CrB-AlN based multicomponent composite coating and by-products such as Cr₅Al₈ and Cr₂AlB₂ on the surface of diamond. Under the protection of Ar gas, Mn₂AlB₂ based composite coating is formed on the surface of diamond by thermal explosion reaction of Mn/Al/B/diamond powder. The two coatings wrap diamond well. Due to the small heat release of the two thermal explosion reactions, the reaction products are difficult to sinter into blocks. The prepared loose porous blocks are easy to crush and separate.Therefore, the ceramic matrix can be separated from diamond particles.
- coating,
- diamond,
- thermal explosion reaction

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References(20)

References

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