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https://elar.rsvpu.ru/handle/123456789/28146
Название: | High-temperature hot-pressing of titanium carbide-graphite hetero-modulus ceramics |
Автор: | Shabalin, I. L. Tomkinson, D. M. Shabalin, L. I. |
Дата публикации: | 2007 |
Издатель: | Elsevier BV |
Аннотация: | Hetero-modulus ceramic-ceramic composite materials (HMC) present the combination of ceramic matrix with high Young's modulus and the inclusions of a dispersed phase with low Young's modulus. The densification of 60-100 vol% TiC-0-40 vol% C (graphite) HMC during hot-pressing of powder compositions at 2200-2400 °C and applied pressures of 8-16 MPa is studied. The general theory of bulk-viscous flow for porous body is developed to describe obtained experimental data. This relation as well as Kovalchenko's equation for the evolution of relative density for non-uniform deformation of porous body, incorporating different stages of creep, are used to determine the activation energy and the exponent constant of hot-pressing process, which values are 270 ± 30 kJ mol-1 and 3 ± 0.3, respectively. The obtained experimental data are discussed on the basis of extensive and detailed analysis of the previous studies on diffusion and diffusion-related phenomena in the Ti-C system. © 2006 Elsevier Ltd. All rights reserved. |
Ключевые слова: | CARBIDES CARBON COMPOSITES HETERO-MODULUS CERAMICS HOT-PRESSING DEFORMATION DENSIFICATION ELASTIC MODULI GRAPHITE HIGH TEMPERATURE APPLICATIONS HOT PRESSING POWDER METALLURGY TITANIUM CARBIDE VISCOUS FLOW HETERO-MODULUS CERAMIC-CERAMIC COMPOSITE MATERIALS HIGH-TEMPERATURE HOT-PRESSING RELATIVE DENSITY CERAMIC MATRIX COMPOSITES CERAMIC MATRIX COMPOSITES DEFORMATION DENSIFICATION ELASTIC MODULI GRAPHITE HIGH TEMPERATURE APPLICATIONS HOT PRESSING POWDER METALLURGY TITANIUM CARBIDE VISCOUS FLOW |
ISSN: | 0955-2219 |
DOI: | 10.1016/j.jeurceramsoc.2006.07.008 |
SCOPUS: | 33845590511 |
WoS: | 000244242300006 |
Располагается в коллекциях: | Научные публикации, проиндексированные в SCOPUS и WoS |
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