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Preparation of Mullite–TiC–ZrC-Ceramic Materials by a Plasma-ARC Method and Their Properties

Preparation of Mullite–TiC–ZrC-Ceramic Materials by a Plasma-ARC Method and Their Properties The phase composition for synthesized titanium carbide TiC and zirconium carbide ZrC powders is provided, and development of the crystal phases, microstructure, relative density, open porosity, true shrinkage, hardness, strength in compression of mullite–TiC–ZrC-specimens with a different ratio of TiC and ZrC sintered by a plasma-arc method in the range 1200 – 1500°C is demonstrated. Synthesized TiC and ZrC powders have intense crystallization of TiC and ZrC phases, and sintered specimens with a different ratio of TiC and ZrC have different mullitization in the range 1200 – 1500°C and degree of TiC and ZrC phase development at up to 1500°C. Above 1500°C there is development of TiC or ZrC phases in relation to the ratio of TiC and ZrC within sintered materials. Specimens with a higher TiC concentration have a denser sintered microstructure compared with specimens containing a greater amount of ZrC. This facilitates an increase in relative density, linear shrinkage and a reduction an open porosity, formation of harder specimens with uniform indentation impression without damage formation around it, and with the best strength indices in compression. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Preparation of Mullite–TiC–ZrC-Ceramic Materials by a Plasma-ARC Method and Their Properties

Hmelov, A.
Refractories and Industrial Ceramics , Volume 57 (6) – Apr 18, 2017
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References (14)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
DOI
10.1007/s11148-017-0038-7
Publisher site
See Article on Publisher Site

Abstract

The phase composition for synthesized titanium carbide TiC and zirconium carbide ZrC powders is provided, and development of the crystal phases, microstructure, relative density, open porosity, true shrinkage, hardness, strength in compression of mullite–TiC–ZrC-specimens with a different ratio of TiC and ZrC sintered by a plasma-arc method in the range 1200 – 1500°C is demonstrated. Synthesized TiC and ZrC powders have intense crystallization of TiC and ZrC phases, and sintered specimens with a different ratio of TiC and ZrC have different mullitization in the range 1200 – 1500°C and degree of TiC and ZrC phase development at up to 1500°C. Above 1500°C there is development of TiC or ZrC phases in relation to the ratio of TiC and ZrC within sintered materials. Specimens with a higher TiC concentration have a denser sintered microstructure compared with specimens containing a greater amount of ZrC. This facilitates an increase in relative density, linear shrinkage and a reduction an open porosity, formation of harder specimens with uniform indentation impression without damage formation around it, and with the best strength indices in compression.

Journal

Refractories and Industrial Ceramics – Springer Journals

Published: Apr 18, 2017

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