Ultrasound-assisted anodization of aluminum in oxalic acid

Quantitative relationship between nanotube length and anodizing current during constant current anodization

“…This growing manner of the porous anodic oxides has been intensely investigated in our previous works [32][33][34][35][36][37][46][47][48][49]. These concerned viewpoints have received considerable attention and citation [15,18,40,44,45,[50][51][52][53].…”

“…Although many groups have recognized that J e and oxygen evolution indeed exist during anodization [15,18,[38][39][40][41][42][43][44][45], it is hard to distinguish J e from J total . Here, we provide a method to estimate the J e magnitude.…”

Theoretical derivation of ionic current and electronic current and comparison between fitting curves and measured curves

“…[35][36][37][38][39][40][41][42][43][44][45] In order to obtain expected PAA or PATNT, great care and attention should be given to the generation of electronic current (or localized dielectric breakdown) and oxygen evolution. [41][42][43][44][45][46] Herein, we focus on the physical nature of the ionic current and electronic current within the anodic oxide and pay more attention to the theoretical expressions of ionic current and electronic current with the anodizing time. The whole derivation was based on ionic current existing as well as electronic current as presented in OBME.…”

Influence of the Anodization Process on Zamak 5 Corrosion Resistance

“…However, the coverage of the anodized layer was very irregular, showing failures and the thickness measured was approximately 2 x 10 -6 m with standard deviation of 1 x 10 -6 m. It is identified that only part of the oxide is adhered to the metal surface and part stands out. Studies have shown that aluminum anodizing in 300 mol.m -3 oxalic acid at 40 V in 300 seconds formed oxide 6 µm thickness 25 . Therefore, although the amount of aluminum in the zamak alloy is 4%, it can be inferred that part of the anodized layer is aluminum oxide.…”