Method for characterizing breakage rate and contrast impact toughness of diamond micro-powder

The invention relates to the technical field of superhard materials, in particular to a method for characterizing the breakage rate and contrast impact toughness of diamond micro-powder. The method for comparing the impact toughness of the diamond micro-powder comprises the steps that two diamond micro-powder samples to be compared are defined as a sample A and a sample B respectively, the particle size breakage rate of the sample A and the particle size breakage rate of the sample B are calculated respectively, a # imgabs0 # imgabs1 # mixed sample is obtained by mixing the sample A and the sample B, and if the particle size breakage rate of A is gt, the particle size breakage rate of B is gt; the impact toughness of the sample A is poorer than that of the sample B, and otherwise, the impact toughness of the sample A is higher than that of the sample B. The technical problem that in the prior art, the impact toughness of diamond micro-powder with different particle sizes or morphologies cannot be accurately c