Honda Giken Kogyo Kabushiki Kaisha

Other

Showa Denko K.k.

Masayuki Narita

Yasuyuki Hama

Takenori Hashimoto

Kenji Ikeuchi

Yoshitaka Nagano

Shigetoshi Jogan

Hiroshi Akiyama

Masashi Fujita

Kazunori Takikawa

Makoto Takahashi

In a friction agitation joining method, two plate-shaped joining members different in thickness, or first and second joining members, are abutted against each other with a level difference formed at upper surface sides thereof. A rotating probe of a joining tool is inserted into the butted portion of the first and second joining members from upper surface sides thereof. Joining-direction front sides of the first and second joining members with respect to the probe inserted position are pressed by first and second front pressing rollers, respectively, from the upper surface sides thereof. Furthermore, joining-direction lower sides of the first and the second joining members with respect to a probe inserted position from the upper surface sides are pressed by first and second lower pressing rollers, respectively, from the upper surface sides thereof. In this state, the butted portion is joined by the friction agitation joining method.

Friction agitation joining method, method for manufacturing joined butted members and friction agitation joining apparatus

A joined structure has high strength, which is used for manufacturing a joint made from different metal materials. In the joined structure in which the different metal materials are joined, a reaction product layer to be generated on the joined interface is set to have a thickness of 0.5 &mgr;m or less. Moreover, the reaction product layer is allowed to intermittently exist on the joined interface. Furthermore, the reaction product layer contains a base material crystal consisting of base material atoms of 90 atom % or more on the joined interface.

Joined structure of different metal materials

Sn&mdash;Zn alloy is plated on at least one of a first metallic member and a second metallic member, Sn&mdash;Ag alloy is used as a solder, the first metallic member and the second metallic member are connected by the solder, and a connection structure of metallic members is therefore produced. Heat degradation of plating and the contact corrosion between solder and plating can thereby be prevented, solderability can be improved, and qualities such as corrosion resistance and connecting strength at the connection structure can be improved.

Connection structure for metallic members and connecting method therefor

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Wako, Japan

Masayuki Narita