TY - JOUR
T1 - Development of MgOx-TiOx coatings for modulation of Mg corrosion resistance
AU - Hernández Rodríguez, Eric Noé
AU - Íñiguez Contreras, Claudia Mariana
AU - Márquez Herrera, Alfredo
AU - Zapata Torres, Martín Guadalupe
AU - Balvantín Gracía, Antonio
AU - Diosdado De La Peña, José Angel
AU - Mis Fernández, Ricardo
AU - Peña Chapa, Juan Luis
N1 - Publisher Copyright:
© EDP Sciences, 2017.
PY - 2018
Y1 - 2018
N2 - The development and testing of protective coatings against corrosion for magnesium is reported. The coatings were based on the MgOx-TiOx composite and for their fabrication the reactive RF-sputtering technique in the co-deposition mode was employed. MgOx-TiOx coatings with chemical composition ranging from pure Mg oxides to pure Ti oxides, including its mixture, were obtained through the variation of the rate of the sputtering powers applied to the Mg and Ti targets. Characterization (XRD and XPS) showed changes in the crystalline structure according to the rate of the sputtering powers and confirmed the presence of MgO2, MgO, Ti2O3 and TiO2 in different proportions. Electrochemical polarization measurements (Tafel) made by employing the Hank's solution showed that both Vcorr and Icorr depend on the chemical composition of the coatings, having better corrosion resistance when the content of Ti oxides is higher. Results showed that corrosion resistance of Mg could be modulated by changing the chemical composition of the MgOx-TiOx coatings.
AB - The development and testing of protective coatings against corrosion for magnesium is reported. The coatings were based on the MgOx-TiOx composite and for their fabrication the reactive RF-sputtering technique in the co-deposition mode was employed. MgOx-TiOx coatings with chemical composition ranging from pure Mg oxides to pure Ti oxides, including its mixture, were obtained through the variation of the rate of the sputtering powers applied to the Mg and Ti targets. Characterization (XRD and XPS) showed changes in the crystalline structure according to the rate of the sputtering powers and confirmed the presence of MgO2, MgO, Ti2O3 and TiO2 in different proportions. Electrochemical polarization measurements (Tafel) made by employing the Hank's solution showed that both Vcorr and Icorr depend on the chemical composition of the coatings, having better corrosion resistance when the content of Ti oxides is higher. Results showed that corrosion resistance of Mg could be modulated by changing the chemical composition of the MgOx-TiOx coatings.
KW - Corrosion
KW - Magnesium
KW - MgOx
KW - Protective coating
KW - TiOx
UR - http://www.scopus.com/inward/record.url?scp=85040313049&partnerID=8YFLogxK
U2 - 10.1051/metal/2017089
DO - 10.1051/metal/2017089
M3 - Artículo
SN - 2271-3646
VL - 115
JO - Metallurgical Research and Technology
JF - Metallurgical Research and Technology
IS - 2
M1 - 205
ER -