Aluminized sheet with poor emissivity and process for making the same

摘要

A steel sheet is coated on at least one side with an aluminium-based alloy containing up to 11% by weight of silicon, which gives it an emissivity below 0.15 for wavelengths between 1.5 and 15 microns. Also claimed are: (i) making the coated sheet, heating the coating above its melting point for 0-100, preferably 0-10 secs. and cooling to below the temperature at which the steel and alloy bond;, and (ii) a thermal screen including the sheet.