RT Journal Article
T1 Ca-based sealing of plasma electrolytic oxidation coatings on AZ91 Mg alloy
A1 Lu, Xiaopeng
A1 Ma, Jirui
A1 Mohedano Sánchez, Marta
A1 Pillado Ríos, Borja
A1 Arrabal Durán, Raúl
A1 Qian, Kun
A1 Li, Yan
A1 Zhang, Tao
A1 Wang, Fuhui
AB Plasma electrolytic oxidation (PEO) coatings on AZ91 Mg alloy were sealed in calcium nitrate solutions at different pH values (3, 4 and 5). Sodium dodecyl sulfate (SDS) was added to study the effect of SDS on the corrosion resistance of the sealed coatings. The microstructure, chemical composition and corrosion resistance of the coatings were investigated by means of SEM, XPS, XRD and electrochemical corrosion tests. The corrosion performance of the coatings was improved due to precipitation of Ca-containing precipitate. Low pH and SDS addition enhanced hydroxyapatite precipitation and produced hydrophobic coatings with worse paint adhesion but better corrosion resistance.
PB Elsevier
SN 0257-8972
YR 2021
FD 2021-04-22
LK https://hdl.handle.net/20.500.14352/6879
UL https://hdl.handle.net/20.500.14352/6879
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)/FEDER
NO Ministerio de Ciencia e Innovación (MICINN)
NO National Natural Science Foundation of China
NO the Fundamental Research Funds for the Central Universities
DS Docta Complutense
RD 9 abr 2025