The degree to which D-D bonds are formed between diamond grains in diamond polycrystalline composite sheets has a significant impact on the macroscopic properties of the composite layer,such as hardness,strength,and wear resistance.Therefore,quanti-tative characterization of the degree of D-D bonding is a key task in the design,produc-tion,and even application of polycrystalline composite sheets.The article reviews five methods for characterizing the bonding state of D-D(SEM method,porosity method,XRD method,three-point bending resistance method,and wear resistance testing meth-od),and explores their principles,providing useful references for the quantitative de-scription of D-D bonding and many macroscopic properties in diamond polycrystalline ma-terials.
维普
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