Manganese Phosphatizing Coatings: The Effects of Preparation Conditions on Surface Properties

Jakub Duszczyk; Katarzyna Siuzdak; Tomasz Klimczuk; Judyta Strychalska-Nowak; Adriana Zaleska-Medynska

doi:10.3390/ma11122585

Manganese Phosphatizing Coatings: The Effects of Preparation Conditions on Surface Properties

Abstract

Manganese phosphate coating could be used to protect the surface of steel products. However, it is essential to determine the effects which process parameters, as well as the types of additives used, have on the efficiency of coating deposition. Thus, we present here a process of phosphatization of low-alloy steel (for 15 min at 95 ◦C) in manganese/nickel baths followed by a passivation process with the use of a silicon and zircon compounds. The microstructure and morphology of the surface were analyzed by SEM EDX and XRD methods. The obtained results showed that the manganese phosphate could be effectively formed at 95 ◦C in the solution containing nickel and guanidine derivatives. Anodic polarization of manganese coating was investigated in 0.5 M KCl by the analysis of polarization resistance. The effects of the activation process on corrosion properties of the coating have been examined. It was observed that an increased concentration of activating substances in the activation bath results in the enhancement of corrosion resistance.

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Authors (5)

Jakub Duszczyk
Katarzyna Siuzdak
Tomasz Klimczuk prof. dr hab. inż.
Judyta Strychalska-Nowak
Adriana Zaleska-Medynska Prof. dr hab. inż.

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DOI:: Digital Object Identifier (open in new tab) 10.3390/ma11122585
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Keywords

OCHRONA POWIERZCHNI

Details

Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: Materials no. 11, edition 12, pages 1 - 22,
ISSN: 1996-1944
Language:: English
Publication year:: 2018
Bibliographic description:: Duszczyk J., Siuzdak K., Klimczuk T., Strychalska-Nowak J., Zaleska-Medynska A.: Manganese Phosphatizing Coatings: The Effects of Preparation Conditions on Surface Properties// Materials. -Vol. 11, iss. 12 (2018), s.1-22
DOI:: Digital Object Identifier (open in new tab) 10.3390/ma11122585
Verified by:: Gdańsk University of Technology