Methods of measuring and controlling activity of zinc phosphate treatment solution

A prescribed amount of a simple fluoride is added to a zinc phosphate treatment solution, which is a target solution, the HF concentration in the target solution is measured with a silicon electrode meter after the addition, and the concentration of the consumed HF is calculated to evaluate the acti...

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Bibliographic Details
Main Authors SOBATA; TAMOTSU, KAWASAKI; ISAO
Format Patent
LanguageEnglish
Published 10.10.1995
Edition6
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
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METALLURGY
PHYSICS
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TESTING
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Summary:A prescribed amount of a simple fluoride is added to a zinc phosphate treatment solution, which is a target solution, the HF concentration in the target solution is measured with a silicon electrode meter after the addition, and the concentration of the consumed HF is calculated to evaluate the activity of the target solution, for adding the simple fluoride to the zinc phosphate treatment solution so that its activity is in a control reference range.
Bibliography:Application Number: US19940194574