| abstract |
An object of the present invention is to provide a heat generating body having high durability and a method of manufacturing the same. The heating element 1 of the present invention includes a first layer 2 having a metal ruthenium phase, a second layer 3 covering the periphery of the first layer 2 and having a ruthenium carbide phase, and an interface portion 4 between the first layer 2 and the second layer 3 The radon concentration is higher than the radon concentration of the portion other than the interface portion 4. |