Abstract
Infrared radiation characteristics of alumino-silicate ceramics were investigated by using instrument which is infrared spectrophtometer with black body furnace as reference beam source.
It was found that the infrared radiation power of almost all ceramic radiants are better than the infrared radiation of metal radiants from present experimental results. The infrared radiation spectra of sintered silica and alumina showed characteristics as called far-infrared radiants, because they had maximum of infrared radiation at 5-7μm wavelength. When alkali or transitional elements are added to aluminosilicate ceramics, the infrared emissivity of them became higher. The infrared emissivity of such ceramics was estimated in comparision with the black body emissivity which is calculated from Planck's distribution of emissive power.
