Journal article
Thermodynamic and experimental study of carbon formation on carbides under hydrothermal conditions
Journal of Materials Chemistry, v 5(4), pp 595-61
1995
Abstract
Thermodynamic analyses for the corrosion of SiC, TiC, TaC, NbC, WC and B
4
C in the temperature range 300-1000 °C in high-pressure steam have been conducted using a Gibbs energy minimization computer code. The calculated results are compared to experimental results for corrosion of these carbides in a hydrothermal fluid above the critical point. The formation of carbon has been predicted and observed for all these carbides, except B
4
C. Carbon is formed at low H
2
O : carbide molar ratios. Lower pressure also promotes carbon formation. For a high H
2
O : carbide molar ratio, the carbon will be oxidized to CO and CO
2
. The hydrothermal method can be used for producing carbon coatings of nanometre to micrometre thickness on the surface of carbides.
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Details
- Title
- Thermodynamic and experimental study of carbon formation on carbides under hydrothermal conditions
- Creators
- Nathan S JacobsonYury G GogotsiMasahiro Yoshimura
- Publication Details
- Journal of Materials Chemistry, v 5(4), pp 595-61
- Publisher
- Royal Society of Chemistry
- Number of pages
- 7
- Resource Type
- Journal article
- Academic Unit
- Materials Science and Engineering
- Scopus ID
- 2-s2.0-0001189690
- Other Identifier
- 991014969873304721