TY - JOUR 
A1 - Espinosa Rodríguez, Tulia
AU - Sanes Molina, José
AU - Bermúdez Olivares, María Dolores
T1 - Halogen-Free Phosphonate Ionic Liquids as Precursors of Abrasion Resistant Surface Layers on AZ31B Magnesium Alloy
Y1 - 2015
SN - 2079-6412
UR - http://hdl.handle.net/10317/4981
AB - Surface coatings formed by immersion in the ionic liquids (ILs) 1,3-dimethylimidazolium methylphosphonate (LMP101), 1-ethyl-3-methylimidazolium methylphosphonate (LMP102)
and 1-ethyl-3-methylimidazolium ethylphosphonate (LEP102) on magnesium alloy AZ31B at 50 °C have been studied. The purpose of increasing the temperature was to reduce the immersion time, from 14 days at room temperature, to 48 hours at 50 °C. The abrasion resistance of the coated alloy was studied by microscratching under progressively increasing load, and compared with that of the uncoated material. The order of abrasion resistance as a function of the IL is LEP102 > LMP101 > LMP102, which is in agreement with the order obtained for the coatings grown at room temperature. The maximum reduction in penetration
depth with respect to the uncovered alloy, of a 44.5%, is obtained for the sample treated with the ethylphosphonate LEP102. However, this reduction is lower than that obtained when the coating is grown at room temperature. This is attributed to the increased thickness and lower adhesion of the coatings obtained at 50 °C, particularly those obtained from methylphosphonate ionic liquids. The results are discussed from SEM-EDX and profilometry.
KW - Ciencia de los Materiales e Ingeniería Metalúrgica
KW - Magnesium
KW - Magnesio
KW - Ionic liquids
KW - Líquidos iónicos
KW - Alkylphosphonate
KW - Alquilfosfonato
KW - Coatings
KW - Revestimientos
KW - Abrasion
KW - Abrasión
LA - eng
PB - Alessandro Lavacchi
ER -