Powder-shaped adhesive for diamond composite sheet and preparation method thereof

Abstract

The invention relates to powder-shaped adhesive for a diamond composite sheet. The powder-shaped adhesive is composed of the following raw materials by weight: 70-75% of cobalt, 2-75% of boron carbide, 3-5% of silver, 0.5-1.5% of silicon and the balance of graphene. The preparation method of powder catalyst includes: placing the cobalt, the boron carbide, the silver and the silicon into a ball mill by proportion, grinding the mixture for 4-6 hours, smelting the mixture in a high-temperature furnace, performing cooling through high-purity nitrogen, and breaking the mixture into metal powder with the granularity of 1-2mum; and mixing the obtained powder with graphene powder according to proportion, mixing the mixture in a three-dimensional blender mixer for 4-6 hours, and finally performing surface purification treatment in a vacuum furnace to obtain the powder-shaped adhesive for the diamond composite sheet. The diamond composite sheet synthetized by the powder-shaped adhesive serving as padding has the remarkable advantages of being low in sintering temperature, wide in technological range, good in production stability, high in finished product rate and the like.

Description

Technical field [0001] The invention relates to the field of superhard material products, in particular to a powdery adhesive for diamond composite sheets and a preparation method thereof, and is mainly used for the production of high-grade diamond composite sheets. Background technique [0002] Diamond composite sheet refers to a composite material made by adding a small amount of metal or non-metal binder to diamond abrasive grains and synthesized by high temperature and high pressure. Because of its excellent properties such as high hardness, good thermal conductivity, and high impact resistance, It is widely used in oilfield mining, infrastructure construction, house maintenance, mechanical processing, geological prospecting and other fields. With the development of science and technology, it has also become an indispensable key material in high-tech fields such as microelectronics, communications, and aerospace. At present, diamond composite sheets generally use diamond micr...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of poor quality consistency, narrow sintering range, poor production stability and unsuitable for large-scale production in the production process of diamond composite sheets in the prior art, the present invention provides a powdery adhesive for diamond composite sheets and its The preparation method, using the product prepared by this method to produce diamond composite sheets has significant advantages such as low sintering temperature, wide process range, good production stability, and high yield.