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

Using Mn/Al/B/diamond powder as raw material, a Mn 2 AlB 2 -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...

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Bibliographic Details
Published inJournal of superhard materials Vol. 44; no. 3; pp. 191 - 197
Main Authors Qiquan Li, Zhang, Qi, Liang, Baoyan, Zhang, Wangxi, Yang, Li
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2022
Springer Nature B.V
Subjects
Aluminum
Borides
Chemistry
Chemistry and Materials Science
Compacts
Diamond films
Diamonds
Manganese compounds
Morphology
Phase composition
Physical Chemistry
Production
Properties
Raw materials
Structure
thermal explosion reaction
diamond
coating
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Summary:Using Mn/Al/B/diamond powder as raw material, a Mn 2 AlB 2 -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 Mn 2 AlB 2 . Other byproducts, such as Al, MnB, MnB 2 , Al 78 Mn 23 , Al 8 Mn 5 , and Mn 2 AlC, were also obtained. The coating fully wrapped the surface of the diamond, and the coating structure was composed of many nanometer and micrometer grains.
ISSN:1063-4576
1934-9408
DOI:10.3103/S1063457622030042