Solution and process for the chemical conversion of metal substrates

Acid solution for the chemical conversion of metallic substrates, comprising: a polyphosphate, soluble in water and of the formula (X PO3)n in which n>/=3 and in which X is an alkali, alkaline earth metal or ammonium, an organic chelating agent and the zinc iron, the pH being brought to the desir...

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Bibliographic Details
Main Authors LUMARET; JEAN-CLAUDE, GOSSETT; SERGE, BOULINGUIEZ; DIDIER
Format Patent
LanguageEnglish
Published 02.10.1984
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
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Summary:Acid solution for the chemical conversion of metallic substrates, comprising: a polyphosphate, soluble in water and of the formula (X PO3)n in which n>/=3 and in which X is an alkali, alkaline earth metal or ammonium, an organic chelating agent and the zinc iron, the pH being brought to the desired value by means of an inorganic acid selected from the group comprising sulphuric hydrochloric and nitric acid.
Bibliography:Application Number: US19830519318