Electrochemical behavior of anodized AA7075-T73 alloys as affected by the matrix structure

Growth of anodic TiO2 nanotubes in mixed electrolytes and novel method to extend nanotube diameter

“…Our group has compared in detail the correlations and differences between the anodizing processes of two types of films on both Al and Ti substrates [26][27][28][29][30][31]. The proposed new viewpoints (e.g., oxygen bubble mould and electronic current) have received a lot of attention and citations [32][33][34][35][36]. It is well known that the compact anodic TiO 2 films (pore-free) can be formed by anodization of Ti in H 3 PO 4 solutions or other fluoride-free electrolytes, whereas the porous anodic TiO 2 films or ATNTs can be obtained in NH 4 F solutions or other fluoride-containing electrolytes [5,11,27,30].…”

The Effects of Anodization Treatment on the Microstructure and Fatigue Behavior of 7075-T73 Aluminum Alloy

“…After sealing of the coated AAO film, there was improvement in the corrosion resistance of the 7075-T73 alloy. 16) However, there has been no published study discussing the effects of the matrix structure on the relation between the number of cycles to failure versus the stress amplitude of an anodized 7075-T73 alloy. We provide experimental results along with microstructure observations to explain the effects of microstructure on changing fatigue behavior on a given stress amplitude.…”

“…20,21) The intermetallic compound particles could amount to 363 counts mm ¹2 according to reference. 16) The particles that ranged in size from 610 µm mostly contained MgSi or Mg Zn, while those that ranged in size from 25 µm were mainly composed of AlSi, AlCu or AlCuFe. Figure 1(b) shows the shape and size of precipitates that are located in the matrix of the bare sample.…”

The Optimum Process to Produce High-Strength Cast/Forged Al–8%Zn–2.5%Mg–1%Cu Alloy

“…In the experiment, we found that when the oxide particle size was less than 30 µm, no significant degradation of the elongation occurred. Potentiodynamic polarization tests were conducted on different heat-treated samples, and the results were recorded using an Autolab PGSTAT30 Potentiostat [19]. The polarized potential of the tested sample was returned to its rest potential, and the anodic polarization curve was obtained by increasing the potential (with a scan rate 0.01 V/s) toward the noble direction until a voltage of 2 V was reached for the sealed film.…”