Solution for transformation of corrosion products

Inventia se refera la mijloacele de protectie a suprafetelor metalice de coroziune, in particular la solutiile pentru transformarea produselor de coroziune. Solutia, conform inventiei, contine acid ortofosforic, fero-(III)-hexacianoferat(II) de zinc, acid tartric, acid oxalic, apa, avand pH 12,3, co...

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Bibliographic Details
Main Authors COVALIOVA OLGA, DUCA GHEORGHE, NENNO VLADIMIR, MEREUTA ALIONA, COVALIOV VICTOR
Format Patent
LanguageEnglish
Romanian
Published 26.02.2010
Subjects
AMMONIA
CHEMICAL SURFACE TREATMENT
CHEMISTRY
CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS
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
COMPOUNDS THEREOF
CYANOGEN
DIFFUSION TREATMENT OF METALLIC MATERIAL
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
INORGANIC CHEMISTRY
METALLURGY
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Summary:Inventia se refera la mijloacele de protectie a suprafetelor metalice de coroziune, in particular la solutiile pentru transformarea produselor de coroziune. Solutia, conform inventiei, contine acid ortofosforic, fero-(III)-hexacianoferat(II) de zinc, acid tartric, acid oxalic, apa, avand pH 12,3, componentele fiind luate in urmatorul raport, in g/L:acid ortofosforic 5...10fero-(III)-hexacianoferat(II) de zinc 30...40acid tartric 5...15acid oxalic 3...5apa restul,totodata se utilizeaza acid tartric, obtinut la dizolvarea tartratului acidde potasiu din vin si/sau sedimente de drojdie, si/sau vinasa, si/sau tescovina dulce ńu solutie de acid ortofosforic de 10...20% cu filtrarea ulterioara; precum si fero-(III)- hexacianoferat(II) de zinc, obtinut din deseurile cleioase vinicole prin alcalinizarea albastrului de Berlin cu solutie de hidroxid de sodiu de 2...5%, epurarea prin electroflotare a solutiei si introducerea unei cantitati stoichiometrice de sulfat de zinc, cu filtrarea sau centrifugarea ulterioara. Rezultatul consta in majorarea eficacitatii procesului de formare a acoperirii anticorosive.
Bibliography:Application Number: MD20080000279