Influence of chitosan coatings on the corrosion resistance of magnesium alloys in sodium sulphate solutions

• Autorzy: Krawiec, H. , Szklarz, Z. , Tissier, V.

Warianty tytułu

Wpływ powłok chitozanowych na odporność korozyjną stopów magnezu w roztworze siarczanu sodu

• Języki publikacji: EN

Abstrakty

EN

The influence of polysaccharide chitosan coatings on the corrosion resistance of magnesium alloys Mg1Ca, Mg1Ca1Si and Mg4Zn1Ca is studied in 0.1 M sodium sulphate solution. It has been shown that localized corrosion of all magnesium alloys proceeds along grain boundaries and around precipitates. After long-term immersion of magnesium alloys (Mg1Ca and Mg4Zn1Ca) metallic ions are detected in the solution. The chitosan and chitosan/TiO2 composite coatings accelerate corrosion of Mg1Ca, Mg1Ca1Si and Mg4Zn1Ca in sodium sulphate based solutions.

PL

Badano wpływ polisacharydowych chitozanowych powłok na odporność korozyjną stopów magnezu typu Mg1Ca , Mg1Ca1Si i Mg4Zn1Ca w 0,1 M roztworze siarczanu VI sodu (Na2SO4). Korozja tych stopów przebiega wzdłuż granic ziaren i wokół wydzieleń. Po kilkudziesięciu godzinach ekspozycji stopów w roztworze elektrolitu jony metali były obecne w roztworze w przypadku stopów Mg1Ca i Mg4Zn1Ca. Obecność powłok chitozanowych i powłok chitozanowych zawierających TiO2 powodowała przyspieszenie korozji stopów magnezu w roztworze siarczanu VI sodu.

Słowa kluczowe

PL

korozja wżerowa; stopy magnezu; powłoki chitozanowe

EN

pitting corrosion; magnesium alloys; chitosan coating

• Czasopismo: Ochrona przed Korozją
• Rocznik: 2017
• Tom: nr 11
• Strony: 368--371
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr.

Twórcy

autor

Krawiec, H.

• AGH - University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23 street, 30-059 Kraków, Poland,

autor

Szklarz, Z.

• AGH - University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23 street, 30-059 Kraków, Poland,

autor

Tissier, V.

• AGH - University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23 street, 30-059 Kraków, Poland

Bibliografia

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Uwagi

This work is supported by the contract ("praca statutowa") no. 11.11.170.318, task 12.

Identyfikatory

DOI

10.15199/40.2017.11.3