The alkali &alkaline metal oxide will react with SiC at about 1300C and generate silicate ,which calls alkali-chemical corrosion,and can influence the glowing of element.

• 在1300C左右，碱和碱性金属氧化物与碳化硅发生反应，生成硅酸盐，称为碱化学侵蚀，会明显影响元件发热的红热程度。