公开(公告)号：US4671825A

公开(公告)日：1987-06-09

申请号：US877761

申请日：1986-06-24

申请人： Toru Ishii ,  Masashi Isobe ,  Mariko Endo

发明人： Toru Ishii ,  Masashi Isobe ,  Mariko Endo

IPC分类号： C23C22/00 ,  C23C22/28 ,  C23C22/30 ,  C23C22/38 ,  C23F7/10 ,  B05D3/02

CPC分类号： C23C22/30 ,  C23C22/28 ,  C23C22/38

摘要： 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 on 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.degree. to 250.degree. C.

摘要翻译： 通过包括准备清洗金属材料的表面的方法，在金属材料的表面上，例如铝及其合金上形成亲水性耐腐蚀涂层，在金属材料的清洁表面上施加水处理液 通过向含有六价铬化合物或三价和六价铬化合物，磷酸和氟化合物的水溶液中加入水溶性丙烯酸聚合物和胶体二氧化硅和有效量的多元醇和/或糖来制备。 将处理液的施加层干燥并烘烤，烘烤温度在100-250℃的范围内。