Kabushiki Kaisha Toyota Chuo Kenkyusho

Riichiro Ohta

Masakazu Murase

Takeshi Ohwaki

Atsuto Okamoto

Shuxin Dong

Tomoyuki Koga

An object is to provide a composite plating film excellent in the water-repellent property and oil-repellent property using a material that is less likely to accumulate in the environment, as substitute for a fluorine resin. A composite plating film is provided which includes an alloy matrix phase and a silicone dispersed in the alloy matrix phase. In the composite plating film, the silicone preferably has Hansen solubility parameters comprising a dispersion term &#x3b4;of 15 MPaor less, a polar term &#x3b4;of 3 MPaor less, and a hydrogen bonding term &#x3b4;of 3 MPaor less. The silicone preferably has an interaction radius of a Hansen solubility sphere of 5.0 MPaor less.

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Nagakute, Japan

Riichiro Ohta