| abstract |
To provide a manufacturing method of a joining member in which a carbon fiber composite material having a thermoplastic resin as a matrix and a metal are firmly joined. A method for producing a joining member formed by joining a carbon fiber composite material having a thermoplastic resin matrix and a metal, and forming a concavo-convex shape having a depth of 0.02 to 0.6 mm on the metal surface of the joining portion. Step (i), Step (ii) of providing a thermoplastic resin layer having a thickness in the range of 5 μm or more and 5 mm or less at the joint between the metal surface and the composite material surface, heating the joint to produce the heat And a step (iii) of integrally bonding the metal and the composite material by melting the plastic resin layer. |