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Coating on the Surface of Diamond Particles by Thermal Explosion Reaction Method

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Abstract

Using Mn/Al/B/diamond powder as raw material, a Mn2AlB2-based multi-element composite coating was formed on the diamond surface through thermal explosion synthesis technology. The effect of different Al contents on the phase composition and microscopic morphology of the binders and coatings was studied. X-ray diffraction, scanning electron microscopy, and energy-dispersive spectroscopy were used to analyze the phase composition and morphology of the thermal explosion samples. Results showed that the Mn/Al/B/diamond compacts were transformed to porous loose blocks after thermal explosion reaction. The binders obtained after separation was mainly composed of Mn2AlB2. Other byproducts, such as Al, MnB, MnB2, Al78Mn23, Al8Mn5, and Mn2AlC, were also obtained. The coating fully wrapped the surface of the diamond, and the coating structure was composed of many nanometer and micrometer grains.

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Funding

This project was sponsored by the National Natural Science Foundation of China (51864028, 51973246, 51805557), Key scientific and technological projects in Henan Province (212102210465, 22A430041), Natural Science Foundation of Henan (202300410513), innovation and entrepreneurship training plan for Provincial College Students in Henan Province (S202010465023), Program for Interdisciplinary Direction Team in Zhongyuan University of Technology, Program for Science and Technology Innovation Talents in Universities of Henan Province (19HASTIT024), National Natural Science Foundation of China (U2030207).

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Authors and Affiliations

  1. Materials and Chemical Engineering School, Zhongyuan University of Technology, 450007, Zhengzhou, P.R. China

    Qiquan Li, Qi Zhang, Baoyan Liang & Wangxi Zhang

  2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 650093, Kunming, P.R. China

    Li Yang

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  1. Qiquan Li
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  2. Qi Zhang
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  4. Wangxi Zhang
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Correspondence to Wangxi Zhang or Li Yang.

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Qiquan Li, Zhang, Q., Liang, B. et al. Coating on the Surface of Diamond Particles by Thermal Explosion Reaction Method. J. Superhard Mater. 44, 191–197 (2022). https://doi.org/10.3103/S1063457622030042

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  • DOI: https://doi.org/10.3103/S1063457622030042

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