RT Journal Article
T1 Corrosion of magnesium-aluminum alloys with Al-11Si/SiC thermal spray composite coatings in chloride solution
A1 Arrabal Durán, Raúl
A1 Pardo Gutiérrez Del Cid, Ángel
A1 Merino Casals, María Concepción
A1 Mohedano Sánchez, Marta
A1 Casajus, P.
A1 Matykina, Endzhe
AB Depositions of Al-11Si coatings reinforced with 5, 15, and 30 vol.% SiC particles (SiCp) were performed onto AZ31, AZ80, and AZ91D magnesium alloys. The influence of substrate composition and SiCp proportion on the anti-corrosion properties of composite coatings was evaluated using DC and AC electrochemical measurements in 3.5 wt.% NaCl solution at 22 °C. The as-sprayed coatings were permeable to the saline solution, and galvanic corrosion occurred at the substrate/coating interface after immersion in the saline solution for a few hours. The addition of SiCp yielded coatings with higher porosity and less effectiveness against corrosion. The application of a cold-pressing post-treatment produced denser coatings with reduced surface roughness, improved hardness, and superior corrosion resistance. However, galvanic corrosion was observed after several days of immersion because of penetration of the 3.5 wt.% NaCl solution through the remaining pores in the coatings.
PB Springer Nature
SN 1544-1016
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/107713
UL https://hdl.handle.net/20.500.14352/107713
LA eng
NO Arrabal, Raul & Pardo, A. & Merino, Maria & Mohedano, Marta & Casajús, P. & Matykina, Endzhe. (2011). Corrosion of Magnesium-Aluminum Alloys with Al-11Si/SiC Thermal Spray Composite Coatings in Chloride Solution. Journal of Thermal Spray Technology. 20. 569-579. 10.1007/s11666-010-9574-0.
DS Docta Complutense
RD 11 abr 2025