Features of Formation of Structure and Phase Composition During a Reactive Sintering of Cubic Boron Nitride with Compounds of Ti, Cr, V

Issues » Volume 40, Issue 8

K. V. Slipchenko $^{1}$ , I. A. Petrusha $^{1}$ , V. Z. Turkevich $^{1}$ , V. M. Bushlya $^{2}$ , J.-E. Stahl $^{2}$

$^{1}$ V.M. Bakul Institute for Superhard Materials, NAS of Ukraine, 2 Avtozavods’ka Str., UA-04074 Kyiv, Ukraine
$^{2}$ Lund University, Box 117, SE-22100 Lund, Sweden

Received: 18.04.2018. Download: PDF

Influence of sintering temperature on both phase composition and structure of ceramic matrix composites based on cubic boron nitride with binders in a form of Al and the Ti, Cr, V carbides are investigated by methods of physical materials science. As the object of study, three $c$ BN–TiC–Al, $c$ BN–Cr $_3$ C $_2$ –Al, $c$ BN–VC–Al compositions containing 60% vol. $c$ BN are selected. The composites are obtained by high-pressure high-temperature (HPHT) sintering in high-pressure apparatus AVTT-30 in the temperature range of 1600–2450°C under pressure of 7.7 GPa. In the process of HPHT sintering of composites in the $c$ BN–TiC–Al and $c$ BN–Cr $_3$ C $_2$ –Al systems, the formation of titanium and chromium diborides is found at the temperatures of sintering $Т_{\textrm{sint}} \geq$ 1850°C and $Т_{\textrm{sint}} \geq$ 2150°C, respectively, simultaneously with the formation of aluminium nitride.

Key words: boron nitride, carbides, ceramic matrix composites, sintering, high pressure.

URL: http://mfint.imp.kiev.ua/en/abstract/v40/i08/1081.html

DOI: https://doi.org/10.15407/mfint.40.08.1081

PACS: 61.05.cp, 61.72.Ff, 62.50.-p, 68.37.Hk, 81.05.Ni, 81.20.Ev, 81.40.Vw

Citation: K. V. Slipchenko, I. A. Petrusha, V. Z. Turkevich, V. M. Bushlya, and J.-E. Stahl, Features of Formation of Structure and Phase Composition During a Reactive Sintering of Cubic Boron Nitride with Compounds of Ti, Cr, V, Metallofiz. Noveishie Tekhnol., 40, No. 8: 1081—1091 (2018) (in Ukrainian)

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