Honda Giken Kogyo Kabushiki Kaisha

Asahi Katantetsu Kabushiki Kaisha

Hidenori Kanno

Eiji Suzuki

Toshiya Nishino

Toshihiko Suenaga

Hiroshi Yoshida

Teruo Akema

Kimio Ochiai

Yasunori Komatsu

Akio Fujinaka

If a member made of rubber containing carbon black and a member made of aluminium alloy come into contact with each other under existence of an electrolytic solution, corrosion of the aluminium alloy member would proceed. Such corrosion of the aluminium alloy member can be suppressed by selecting a surface resistivity (surface electric resistivity) of the rubber member at 10.sup.6 .OMEGA. or higher, and more preferably 10.sup.7 .omega. or higher.

Combination of a rubber member and an aluminum alloy member

A paint film structure formed on an aluminum member or aluminum alloy member has a first paint film layer formed on a surface of the aluminum member or aluminum alloy member and a second paint film layer formed on a surface of the first paint film layer, the first and second paint film layers being chiefly composed of a colloidal silica, an organoalkoxysilane part hydrolysis condensation product, and a polymer or copolymer of an unsaturated ethylenic monomer, polymeric content or copolymeric content of the unsaturated ethylenic monomer in the first paint film layer being less than polymeric content or copolymeric content of the unsaturated ethylenic monomer in the second paint film layer.

Paint film structure formed on aluminum member or aluminum alloy member

Growing community of inventors

Saitama, Japan

Hidenori Kanno