COATING PRODUCT, PROCESS FOR PRODUCING, CONCENTRATED AGENT FOR TREATING WITH PHOSPHATE, AND CONCENTRATED TREATING AGENT FOR SUPPLEMENTARY USE

• Main Authors: ENDO, KOETSU, TOKUYAMA, AKIO, SOBATA, TAMOTSU
• Format: Patent
• Language: English; French
• Published: 15.11.1990
• Edition: 5
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

Coating Product, Process for Producing, Concentrated Agent for Treating with Phosphate, and Concentrated Treating Agent for Supplementary Use A coating product has a zinc phosphate film for coating on a metal surface and thereon a coating film. The zinc phosphate film contains 20 ~ 42 weight % of zinc, 0.5 ~ 8 weight % of calcium, and 1.0 ~ 8 weight % of nickel. The zinc phosphate film of this kind is obtained by treating the metal surface with dipping in an aqueous acidic phosphate-treating solution which contains at least a zinc ion, a phosphate ion, a calcium ion, a nickel ion, a fluorine compound, and an accelerator for converting into a film in specially defined concentrations and, in which the weight ratios of the calcium ion vs. the zinc ion, the nickel ion vs. the zinc ion, and the fluorine compound vs. the phosphate ion are set in specially defined ranges.