Technology of Production of Diamond-Abrasive Composites with Metal Matrix

Abstract:

The prospects of using the method of explosive pressing for solving urgent problems of creating high-performance diamond composites for instrumental purposes on binders of powders of fairly cheap materials are substantiated. Purpose of this work is to develop the technology of diamond-abrasive composites synthesis from powders mixtures of natural diamond and widespread low-cost iron-carbon alloys which combines explosive pressing and subsequent short-term high-temperature heating. The processes of varying the compositions of diamond-metal powder mixtures, the parameters of their explosive pressing and the modes of subsequent heat treatment of the resulting compacts are studied. It is shown that the use of explosion energy at the stage of powder briquetting opens up new opportunities for the production of high-performance diamond-containing materials with a matrix of iron-carbon alloy powders. This is due to the specifics of the explosive action which results in the activation of the bonding material which becomes obvious with further high-temperature heating in its intensive hardening and acceleration of diffusion processes. It is revealed that the shock waves create thermobaric conditions that allow for better preservation of the diamond component than with traditional methods of sintering. Samples of abrasive diamond composites with wear resistance corresponding to the level of wear resistance of industrial diamond dressers but with half the consumption of diamond raw materials were obtained.

• Periodical: Materials Science Forum (Volume 992)
• Pages: 296-300
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.992.296
• Online since: May 2020
• Authors: S.P. Yakovleva, Susanna N. Makharova, M.I. Vasilyeva*
• Keywords: Diamond Retention, Diamond-Abrasive Composite, Explosive Pressing, Iron-Carbon Alloys Powders, Powders of Natural Diamond, Wear Resistance

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