The structure of a superhard composite, synthesized from hexagonal boron nitride and aluminum nitride nanofibers

Abstract

The paper considers the results of a study of the structure, phase composition, and microhardness of a superhard composite material based on cubic boron nitride. The material under study was obtained from a hexagonal modification of BN modified by nanostructured aluminum nitride AlN. The procedure of an X-ray diffraction study is described that includes a radiography phase analysis at an automated complex based on a diffractometer with recording in scanning. The micromechanical properties of the composite were investigated by the method of nanoindentation. It is shown that obtained under high pressures and temperatures material contains aluminum boride AlB2 with a hexagonal crystal lattice alongside with the cubic BN and AlN.