Abstract
Theoretical and experimental studies of cubic BN mixed with Ta and TaC in the 1:1 molar ratio are presented. From theoretical calculations it follows that Ta reacts with boron nitride forming additionally two phases: tantalum boride and tantalum nitride. Experimental cBN-phase composites were prepared by high pressure hot pressing. The samples were characterized after heat treatment using scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).
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