| Autor: |
Fox, Dennis S., Cuy, Michael D., Nguyen, QuynhGiao N. |
| Zdroj: |
Journal of the American Ceramic Society; June 1998, Vol. 81 Issue: 6 p1565-1570, 6p |
| Abstrakt: |
A commercially available, sintered silicon carbide was exposed to a temperature of 982°C for up to 50 h in a burner rig pressurized to 500 kPa. Synthetic sea salt added to the flame (5 ppm) resulted in the deposition of sodium sulfate and formation of a sodium magnesium silicate corrosion product. A 16 reduction in room-temperature strength occurred after 5 h of exposure; this reduction was due to the formation of surface pits. Exposure for longer times resulted in continued strength reduction, up to 56 at 25 h. Samples exposed for 50 h were so degraded that mechanical tests could not be conducted. The strength after 25 h of exposure to a salt concentration of 2 ppm was similar to the as-received strength, whereas exposures to 10 ppm of salt resulted in strengths similar to that observed with 5 ppm of salt. |
| Databáze: |
Supplemental Index |
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