Surface type heating element and manufacturing method thereof

Abstract

Discussed are a surface type heating element which generates heat using electricity and a method of manufacturing the surface type heating element. The surface type heating element includes: a substrate; a buffer layer disposed on the substrate, the buffer layer having a thermal expansion coefficient of about 50*10−7 to about 100)*10−7 m/° C.; and a surface type heating element layer disposed on the buffer layer and including a NiCr alloy, and thus it can be used even at a high operating temperature of about 450° C. or more, suppresses the elution of the material itself, and allows thermal stress caused by a difference in coefficient of thermal expansion between the surface type heating element layer and the substrate to be reduced while having high fracture toughness, a low coefficient of thermal expansion, and heat resistance.

Dependencies are inferred from the claim text.