The pitting behavior of Al-3103 implanted with molybdenum

Electrochemical behavior and corrosion resistance of Ti–15Mo alloy in naturally-aerated solutions, containing chloride and fluoride ions

“…By the SEM technique, all records of the surfaces were obtained with the magnification of 1009. There was no pitting corrosion on these surfaces (this sort of corrosion is a quite distinct) [24]. These results are according to those observed in CV (Fig.…”

“…The impedance spectra were acquired in the frequency range from 100 kHz to 10 mHz with a disturbance signal of 10 mV. EIS plots were obtained after the specimens were immersed in the test solutions for different numbers of hours (1,24,48,72,168,240, and 360 h). Each analysis was repeated three times, observing if there was repeatability of the tests.…”

Corrosion performance of NiAl intermetallic with Mo, Ga and Fe in neutral and alkaline media

“…Molybdenum was detected in the outer zone of the passive film, whereas nickel does not enter the passive film [12,13]. Zhang [14] studied the corrosion of aluminum implanted with Mo in 0.1 M NaCl and in 0.1 M NaCl+0.03 M NaHCO 3 , and found that the corrosion products on the surface were MoO 3 , Al 2 (MoO 4 ) 3 , MoCl 4 , AlCl 3 , Al 2 O 3 , and Al(OH) 3 . In alkaline solutions, non-protective NiO and Ni(OH) 2 was reported.…”

“…Alloys containing Al are protected against corrosion by the formation of a protective Al 2 O 3 layer. Incorporation of Mo into the passive film, alters the Al-O bonds and replaces them with bonds formed between oxygen and molybdenum, affecting the incorporation of aggressive anions, and therefore, affects the alloy corrosion resistance [14]. Thus, the main effect of Mo is to change the chemical properties of the surface film by altering the adsorption of ions and by affecting the corrosion dissolution resistance of the metal.…”

Thermally oxidised titanium coating on aluminium alloy for enhanced corrosion resistance

“…However, aluminium alloys are susceptible to pitting corrosion in chlorine ion (Cl À ) containing environments, and are not suitable for marine and off-shore applications [1][2][3]. Attempts to tackle this problem include the development of new alloy systems [4,5], the use of inhibitors [6,7] and surface modification to change the chemistry, composition and properties of the alloy surface.…”