Abstract
Composite materials based on diamond (DCM) have found widespread application and have been used particularly effectively in the drilling and machining industries. The necessary material properties are attained by sintering at high pressure under the proper pressuretemperature conditions, and also by controlling the granular state of the diamond powder, as well as the amount of binder. Finding new alloys which are able to serve as effective binders in DCM is a serious technical problem. The important characteristics of metallic binders are their adhesive properties, the phase composition of products which interact with carbon, and their distribution on the diamond-binder interface. Since there is no essential difference in the adhesive properties of metallic melts with respect to graphite and diamond [i] (particularly at pressures approaching 45 kbar [2]) it is permissible to use the results of investigation of the physicochemical laws of formation of boundary contacts in graphite-metallic melt systems to analyze the properties of the diamond-binder interface.
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