Abstract
This work reports on the fabrication of a self-healing, oxidation-resistant glass coating for SiCf/SiC composites. The glass-coating material is a thermally stable boro-silicate glass with excellent wetting properties and viscosity.Some glass-coated composites were prepared by a simple and low-cost slurry technique, then treated in air for 100 h at 1200°C. Three-point bending tests were performed on the glass-coated composites after the thermal treatment, and the results were compared with the bending strength of the uncoated SiCf/SiC before and after the same thermal treatment. The mechanical behavior of the glass-coated composite remained almost virtually unaffected after being heated at 1200°C in air for 100 h.
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