C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
117/199, 148/20,
C23C 22/28 (2006.01) C09D 5/08 (2006.01) C23C 22/30 (2006.01) C23C 22/38 (2006.01)
Patent
CA 1280998
Title of the Invention METHOD FOR FORMATION OF HYDROPHILIC CORROSION-RESISTANT COATING ON THE SURFACE OF METALLIC MATERIAL Abstract of the Disclosure A hydrophilic corrosion-resistant coat is formed on the surface of a metallic material, e.g., aluminum and its alloys, by a method which comprises preparatorily cleaning the surface of the metallic material, applying or. the cleaned surface of the metallic material an aqueous treating liquid produced by adding a water-soluble acrylic acid polymer and colloidal silica and effective amounts of a polyhydric alcohol and/or saccharide to an aqueous solution containing hexavalent chromium compound or trivalent and hexavalent chromium compounds, phosphoric acid, and a fluorine compound. The applied layer of the treating liquids is dried and baked, the baking being at a temperature in the range of 100° to 250°C.
512419
Endo Mariko
Ishii Toru
Isobe Masashi
Endo Mariko
Ishii Toru
Isobe Masashi
Kirby Eades Gale Baker
Nippon Light Metal Company Limited
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