Joined body of joining base material and metal layer

A joined body of a joining base material and a metal layer, the metal layer being joined to a joint surface of the joining base material via an intermediate layer coating, wherein

• the joining base material is a ceramic base material,
• the intermediate layer coating is oxide glass produced by melting a compound of one or two or more kinds of metal components,
• in the intermediate layer coating, an anchor forming material that forms an anchor for joining the metal layer by an anchor effect is dispersed and embedded, and the intermediate layer coating is fused to the joint surface of the joining base material,
• the embedded anchor forming material partially protrudes outward from the intermediate layer coating, and is fused to the intermediate layer coating,
• the metal layer has a structure in which a primary metal layer is formed on the intermediate layer coating, and a secondary metal layer is formed on the primary metal layer,
• the anchor forming material has a diameter of 0.1 to 30 μm,
• the anchor forming material has a spherical, angular, or polygonal shape, and the anchor forming material is dispersed and embedded in a fibrous or mesh form having a three-dimensional structure in which a plurality of the anchor forming materials are bonded to each other,
• the primary metal layer fills a gap between the anchor forming materials protruding outward from a surface of the intermediate layer coating, surrounds protrusions of the anchor forming materials, and is joined to the surface of the intermediate layer coating.