RT Journal Article
T1 Corrosion behaviour of Mg–Al alloys with Al thermal spray coatings in humid and saline environments
A1 Arrabal Durán, Raúl
A1 Pardo Gutiérrez Del Cid, Ángel
A1 Merino Casals, María Concepción
A1 Merino, S.
A1 Casajus, P.
A1 Mohedano Sánchez, Marta
A1 Rodrigo, P.
AB The corrosion behaviour of thermal spray Al coatings deposited on AZ31, AZ80 and AZ91DMg–Al alloys was evaluated in salt water (3.5 wt.% NaCl), neutral salt fog (ASTM B 117) and highrelative humidity (98% RH, 50 ºC) environments. The changes in the morphology and corrosionbehaviour of the Al coatings induced by cold–pressing post–treatment were also examined. Inchloride–containing environments, the presence of interconnected pores in the as–sprayed Alcoatings facilitated the galvanic acceleration of the corrosion of the magnesium substrates. Thecold–pressed Al coatings revealed improved corrosion behaviour associated with a lower level ofporosity. In high humidity environment, even though the corrosion rates for all the examinedmaterials were lower than in the case of salt fog, similar corrosion features were observed;formation of hydromagnesite on the surface of untreated materials, galvanic corrosion in the Al–TSspecimens and almost negligible corrosion attack of the Al coating with formation of bayerite(β–Al2O3·3H2O) in the case of the cold–pressed specimens
SN 1938-159X
SN 0010-9312
YR 2009
FD 2009
LK https://hdl.handle.net/20.500.14352/107592
UL https://hdl.handle.net/20.500.14352/107592
LA eng
NO Arrabal, Raul & Pardo, A. & Merino, Maria & Merino Oviedo, Susana & Casajús, P. & Mohedano, Marta & Rodrigo Herrero, Pilar. (2009). Corrosion Behavior of Mg-Al Alloys with Aluminum Thermal Spray Coatings in Humid and Saline Environments. Corrosion. 65. 10.5006/1.3319108.
DS Docta Complutense
RD 25 abr 2025