Issues »  Volume 39, Issue 7

Features of Formation of Phases and Structures During Reactive Hot Pressing Composites of the ZrB$_2$–SiC System

S. V. Chornobuk, A. O. Goncharenko, O. U. Popov, V. A. Makara

Taras Shevchenko National University of Kyiv, 60 Volodymyrska Str., UA-01033 Kyiv, Ukraine

Received: 15.06.2017. Download: PDF

The ZrB$_2$–SiC phase and structure formation during hot pressing of ZrC, Si, B4C and ZrB$_2$ powder mixtures at 1800°С and 27 MPa for 5 min is investigated. Content of SiC in sintered materials reaches 50% vol. As shown, the material consolidation process strongly determined by physicochemical transformations during the sintering. Composite shrinkage passes through several stages, which correspond to certain reactions with formation of intermediate (ZrSi$_2$) and final (ZrB$_2$ and SiC) phases.

Key words: ceramics, zirconium diboride, reaction sintering, kinetic curve.

URL: http://mfint.imp.kiev.ua/en/abstract/v39/i07/0983.html

DOI: https://doi.org/10.15407/mfint.39.07.0983

PACS: 61.05.cp, 61.43.Gt, 81.05.Je, 81.20.Ev, 81.70.Fy, 82.33.Ln, 82.40.Ck

Citation: S. V. Chornobuk, A. O. Goncharenko, O. U. Popov, and V. A. Makara, Features of Formation of Phases and Structures During Reactive Hot Pressing Composites of the ZrB$_2$–SiC System, Metallofiz. Noveishie Tekhnol., 39, No. 7: 983—993 (2017) (in Ukrainian)

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