621.762A study has been made on the effects of initial vibroground powders with various grain sizes on the properties of AlN − BN composites. As the specific surface of these powders increases, so do the density, mechanical strength, and thermal resistance of the composites.Data have been published [1-3] on materials in the AlN − BN system formed during the sintering of Al − BN or AlN − B mixtures or else AlB 12 powder. Here we examine making composite materials from aluminum and boron
We have carried out a comparative x-ray analysis of boron nitride powders with different degrees of ordering and sintered specimens of boron carbonitride based on such powders. We have established that an indicator of sintering activity for the boron carbonitride specimens is the rate of formation of the r-BN phase, the content of which depends on the degree of ordering of the starting BN powder.
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