A heating element and a method for manufacturing the same.

摘要

A heating element (1) for a cooking apparatus or a heating apparatus is manufactured by forming aluminium layers on a nickel or nickel-base alloy base or forming nickel layers and then aluminium layers on a metal base (2), and by oxidizing the aluminium layers into an aluminium oxide layers. At the oxidizing step, nickel-aluminium alloy layers with high corrosion resistance are also produced. Only aluminium layers, not nickel layers, may be formed on a metal base and oxidized into aluminium oxide layers to obtain a heating element with relatively low but practical corrosion resistance. The resultant heating element by any of the above processes which does not require a cover or other protection against corrosion is formed into a sheet and heated to provide radiation of about 800 DEG C. <IMAGE>