Method of plating a metal boride on a diamond surface

By reacting boron powder and boric acid at high temperature with the diamond surface in an inert atmosphere or vacuum environment to form a metal boride coating, the problems of long coating time and high energy consumption in the prior art are solved, and a highly efficient and energy-saving interface bonding is achieved, which is suitable for industrial production of diamond coating.

CN117446801BActive Publication Date: 2025-12-12JILIN UNIVERSITY
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Patent Information

Application Number
CN202311270334.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-09-28
Publication Date
2025-12-12
Estimated Expiration
2043-09-28

AI Technical Summary

Technical Problem

Existing methods for coating metal borides on diamond surfaces are time-consuming and energy-intensive, impacting the profit margins of the diamond coating industry. Furthermore, they suffer from poor interfacial adhesion, making it difficult to achieve efficient and energy-saving interfacial bonding.

Method used

The process involves mixing diamond with metal carbide coating, boron powder, and boric acid in an inert atmosphere or vacuum environment, and reacting the mixture at high temperature to form a metal boride coating. By controlling the reaction temperature and time, a C-Me-B structure coating is generated, where Me is a transition metal.

Benefits of technology

This method enables the preparation of metal boride coatings at low cost and low energy consumption, improves the bonding force between diamond and the substrate, simplifies the operation process, and enhances the conversion rate of metal borides, making it suitable for industrial production.

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Abstract

The application discloses a method for plating metal boride on the surface of diamond, and belongs to the technical field of diamond surface treatment. The method is characterized by uniformly mixing diamond plated with metal carbide, boron powder and boric acid, heating to 900 DEG C-1200 DEG C at a heating rate of 3 DEG C / min-10 DEG C / min in an inert atmosphere or vacuum environment, and keeping constant temperature for 5 min-120 min to plate metal boride film on the surface of diamond. The method aims to obtain diamond plated with metal boride with higher quality and conversion rate by a simpler operation on the basis of low cost and low energy consumption. The result shows that diamond plated with metal boride can effectively improve the interface bonding between diamond and metal matrix.
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Citation Information

Patent Citations

  • A method for plating metal boride on diamond surface

    CN109292770B

  • Method of making alumina abrasive grain having a metal boride coating thereon

    US5611828A

  • Method for plating metal boride on diamond surface

    CN109292770A

  • Process for forming a metal boride coating on a carbonaceous substrate

    US4979998A