Effects of coal slag corrosion on the mechanical properties of sintered {alpha}-silicon carbide
Conference
·
OSTI ID:453773
- Ecole Centrale, Lyon (France)
- Oak Ridge National Lab., TN (United States)
Tubes of sintered SiC were exposed for 500 h in a laboratory furnace to three different coal slags at three temperatures. No corrosive attack or strength reduction was observed after exposure at 1090{degrees}C. At 1260{degrees}C the least viscous slag caused formation of corrosion pits and loss of strength. At 1430{degrees}C formation of iron silicides at the interface between the slag and the base material caused severe loss of strength for slags with the highest and the lowest viscosity, while the specimens exposed to the slag with medium viscosity and medium iron content survived quite well. The results show that mechanical strength can be retained for certain coal slag - temperature combinations.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 453773
- Report Number(s):
- CONF-970111--6; ON: DE97004288
- Country of Publication:
- United States
- Language:
- English
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