Steam pressure and velocity effects on high temperature silicon carbide oxidation
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
The effects of steam pressure, velocity, and composition on SiC oxidation kinetics were studied. Pressure effects were tested at 1200°C from 0.1 to 1.4 MPa at a steam velocity of 0.25 cm/s. Velocity effects were tested in two furnaces at 0.45 MPa, 1200°C and 0.1 MPa, 1600°C with velocities ranging from 0.25 to 137 cm/s. Steam composition was altered by changing the reaction vessel material. Oxide morphology and composition were determined using optical and electron microscopy, and X-ray diffraction. Porous oxides were observed whenever structural SiC from the reaction vessel saturated the steam with volatilized silica, H2, and CO. Oxidation kinetics were calculated by the change in SiC thickness. The steam velocity/recession rate followed a power-law relationship of ~ 0.35 while the steam pressure/recession rate followed a power-law relationship of ~ 1.78.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE), Nuclear Fuel Cycle and Supply Chain. Advanced Fuel Campaign
- Grant/Contract Number:
- AC05-00OR22725; NE0008577
- OSTI ID:
- 1649587
- Alternate ID(s):
- OSTI ID: 1575094
- Journal Information:
- Journal of the American Ceramic Society, Vol. 103, Issue 3; ISSN 0002-7820
- Publisher:
- American Ceramic SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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