Kompozyty z regularnego azotku boru.

Przedstawiono krytyczną analizę zjawisk chemicznych towarzyszących spiekaniu regularnego azotku boru z udziałem domieszek modyfikujących, takich jak metale lub ich wodorki. Przedstawiono dodatkowo badania wpływu tych zjawisk na skład fazowy, morfologie i właściwości wytrzymałościowe otrzymanych kompozytów materiałów supertwardych.

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In the work critical analysis of the chemical phenomena taking place during sintering of cubic BN with modifying admixtures, such as metals, metal alloys and hybrides has been undertaken. Additionally studies of the influence of these phenomena on the phase composition, morphology as well as mechanical properties of the superhard materials obtained have been carried out. Studies of the cBN-metal contact layer, presented in the work, have been performed using modern techniques (TEM, SEM), in cooperation with the scientists of University of Mining and Metallurgy in Cracow. Of all materials studied composites containing titanium binding phase show the best mechanical properties. Therefore it can be concluded that in the preparation of cBN composites titanium is the best modifying admixture.