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Materials, Methods & Technologies, Volume 10, 2016

THE INTERACTION OF DIAMOND AND BORON NITRIDE WITH CRYSTALLINE GLASS DURING THE COMPOSITE SYNTHESIS
T. V. Grigoryan, G. G. Manukyan, L. A. Gasparyan, V. P. Toroyan, N. B. Knyazyan
Pages: 198-205
Published: 1 Jul 2016
Views: 660
Downloads: 187
Abstract: The interaction process of glass with cubic boron nitride (βBN) and diamond has been studied under dynamic and isothermal conditions. It has been revealed that with the interaction of fluorine-containing glass on the basis of boron alliuminiumsilicate with the abrasives higher than the softening temperature of glass in parallel occurs a stable phase separation. The crystallization process is expressed by the anomalous chаnge of the glass viscosity within the temperature range of 420-440°C. The study of microstructure of the composite has revealed that the formation of the crystalline phase on the interface of “melt – βBN” “melt – diamond” suppresses the abrasive oxidation. The release of stable crystal phases is observed at high-temperature heat treatment of the composite.
Keywords: glass, crystallization, diamond, boron nitride, caking, composite materials
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