Powder-shaped adhesive for diamond composite sheet and preparation method thereof
A diamond composite sheet and powdery technology, which is applied in the field of superhard material products, can solve the problems of narrow sintering range, poor quality consistency, unsuitable for large-scale production, etc., and achieve the effect of avoiding serious influence and uniform structure
Active Publication Date: 2013-01-30
河南亚龙金刚石制品股份有限公司
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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.
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