DIAMOND-Fe-Cu-Ni-Sn COMPOSITE MATERIALS WITH PREDICTABLE STABLE CHARACTERISTICS

摘要

A developed mathematical model and a complex of methods of physical materials science are used to establish the parameters of hot pressing of diamond-containing compositions for which these compositions improve their physicomechanical properties as compared with the composites produced by using the commercial technologies. It is shown that the mechanism of improvement of the structure of the diamond-matrix transition zone and the properties of diamond-51 % Fe-32% Cu-9% Ni-8% Sn composites is reduced to the diffusion of carbon atoms formed in the course of graphitization of diamonds in the stage of free sintering of the compositions into the crystal lattice of α -Fe during their hot pressing under a pressure of ≥ 200 MPa for ≥ 3 min.