01744nab a2200205 4500 20260520000923.0 260224s2011 xxu Corrosion behavior of AZ magnesium alloys with Al and Al-11 Si thermal spray coatings feb. 2011 22/02/2011 ; 22/02/2011 14 p. ; 025003 Transcripción del resumen del autor. The corrosion behavior of AZ31, AZ80, and AZ91D Mg-Al-Zn alloys coated with aluminum and Al-11Si thermal spray was evaluated in 3.5 wt% sodium chloride (NaCl) solution at 22°C by gravimetric and electrochemical impedance spectroscopy (EIS) measurements. The corrosion products were examined using scanning electron microscopy (SEM), energy-dispersive x-ray analysis (EDX), and low-angle x-ray diffraction (XRD). The as-sprayed aluminum and Al-11 Si coatings were porous, and galvanic corrosion of magnesium substrates was observed at the substrate/coating interfaces. Application of a cold-pressing posttreatment smoothed and densified the coatings, improved the contact between coating and substrate, and substantially increased the corrosion resistance. Cold-pressed aluminum coatings were an effective barrier against corrosion and revealed the same corrosion performance, regardless of the composition of the magnesium substrate. However, cold-pressed Al-11Si coatings were permeable to the chloride-containing solution, and galvanic corrosion of magnesium substrates was observed after a few days of immersion in 3.5 wt% NaCl solution. 2 Corrosion 67 ARTICULO Pardo, A. 34232 Merino, M.C. 34233 Arrabal, R. 43511 173474 173474 0 0 0 0 241293 BAAB BAAB 2026-03-05 200051473 0 200051473 2026-03-05 16:09:41 2026-03-05 ARTICULO