Preparation and performance of iron chromium based high temperature infrared radiat coating

A high temperature infrared radiat coating for energy saving was developed with iron chromium based high emissivity powder, binder, additives and sintering aids. The coatings were sintered at different temperatures. The changes of microstructures, phase compositions and the bonding interface between the coating and firebrick were investigated by thermal analysis, SEM, XRD and electron microprobe analysis. The results indicate that the spinel phase formed by iron chromium based high emissivity powder is uniformly distributed in the Al-Si matrix phase, the entire infrared radiation emissivity of the coating is 0.89.The electron microprobe analysis and thermal shock tests show high bonding strength between the coating and the firebrick.