Using the crucible method,laboratory corrosion test on silicon carbide was conducted in a simulated incinerator ash under dry or wet air atmosphere at1000 ℃.The surface of SiC was oxidized and
glass layer of Na-K-Si-O system was formed.The glass layer could not hinder the corrosion and the oxidization gradually progressed.The weight loss after corrosion in the wet air was one and a half times larger than that in the dry condition after 96 hours exposure.