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Title: Steam pressure and velocity effects on high temperature silicon carbide oxidation

Journal Article · · Journal of the American Ceramic Society
DOI:https://doi.org/10.1111/jace.16834· OSTI ID:1649587
ORCiD logo [1]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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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
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (17)

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Figures / Tables (13)

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Related Subjects

36 MATERIALS SCIENCE
Nuclear
Kinetics
Pressure
Velocity
SiC
Steam
Oxidation
Volatilization