| 摘要 |
PROBLEM TO BE SOLVED: To provide a joining method where a sprayed coating with excellent adhesivity and a joined body with excellent joining strength of a joined part and excellent ductility are obtained, and a joined body in performing the joining using a sprayed coating of Ni-based alloy containing Cr and/or Si excellent in heat resistance and strength. SOLUTION: In a joining method using sprayed film where a sprayed coating is formed on a surface of a base plate, the base plate is brought into contact with a work through the sprayed coating, the sprayed coating is heated and melted to join the base plate with the work, Ni-based alloy containing Cr and/or Si is used for the sprayed coating, and the relationship between the surface roughness Ra (μm) and the quantity of oxide mOx (mass %) contained in the sprayed coating simultaneously satisfies the inequalities of Ra+mOx<=5.5 and Ra<2>×mOx>=0.2 when the surface roughness Ra is <=2μm, or the inequality of Ra+mOx<=5.5 when the surface roughness Ra is >2μm.
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