МЕХАНИЧЕСКАЯ ОБРАБОТКА АЛМАЗНЫХ МОНОКРИСТАЛЛОВ АЛМАЗНЫМИ МИКРОПОРОШКАМИ С ПОКРЫТИЕМ

A. V. Nozhkina; V. I. Kostikov; V. G. Ralchenko; N. M. Stopareva; A. Yu. Razbegaev; E. R. Kataeva; E. A. Zavedeev

A. V. Nozhkina JSC Research Institute of Natural, Synthetic Diamonds and Instrument VNIIALMAZ
V. I. Kostikov National University of Science and Technology MIS&S
V. G. Ralchenko Prokhorov General Physics Institute of the Russian Academy of Sciences
N. M. Stopareva State Research Institute of Construction Materials on the basis of graphite "NIIgrafit" (JSC "NIIgrafit")
A. Yu. Razbegaev National University of Science and Technology MIS&S
E. R. Kataeva National University of Science and Technology MIS&S
E. A. Zavedeev Prokhorov General Physics Institute of the Russian Academy of Sciences

Keywords: diamond single crystal, diamond micropowder, coating, machining

Abstract

The properties and working capacity of micropowders of synthetic diamonds of grade ACM 10/7 KM with a chemically active coating on carbon based on silicon alloys as compared to micropowder ACM 10/7 without coating were investigated.

It has been experimentally established that the coating increases the abrasive ability of the diamond powder by 15-22%. It is also shown that the use of coatings on diamond powders increases their thermal stability due to the reduction of stresses in crystals, as well as the healing of cracks and other defects in grains of diamond powders. It has been experimentally established that the coated micropowder has a twice higher coefficient of diamond removal compared to the micropowder without coating due to the effect of the use of the physico-chemical medium on the processing speed of the crystal