NICKEL-CHROMIUM POROUS BODY

A nickel-chromium porous body includes a skeleton having a three-dimensional mesh-like structure. The skeleton has a hollow inner portion and has a main metal layer and a surface oxide layer formed on each surface side of the main metal layer. The surface oxide layer has a thickness of 0.5 µm or more and contains chromium oxide as a main component. The main metal layer is formed of nickel-chromium having a chromium content of 10 mass% or more as a whole and has a chromium content of 20 mass% or more in a region extending at least 3 µm from an interface in contact with the surface oxide layer. The surface oxide layer and the main metal layer are in close contact with each other without a gap therebetween.