Porosity of anodic alumina membranes from electrochemical measurements

Influence of nanoporous structure on mechanical strength of aluminium and aluminium alloy adhesive structural joints

“…At higher magnifications, the surfaces show the morphologies presented in figure 6: both surfaces present nanoroughness, but while pure aluminium (figure 6(a)) is covered by a nanoporous structured layer with 65 nm average diameter pores, AA2024 (figure 6(b)) shows a globular structure with pores much smaller in size than those for pure aluminium. The formation of a porous structure on aluminium by electrochemical oxidation of the metal is well known and it is due to localized dissolution of oxide assisted by the electric field at the electrode/electrolyte interface [31][32][33][34].…”

“…Taking into account that the same anodizing voltage, which is the fundamental parameter controlling the porous structure [19,[31][32][33][34][35], was applied to both pure aluminium and AA2024, quite interestingly, figure 6(b) shows that the addition of some alloying element to pure aluminium modifies the grown porous structure.…”

Electrochemical Properties of a Si3N4Dielectric Layer Deposited on Anodic Aluminum Oxide for Chemical Sensors

“…Its advantage it that it allows the pore size and space between pores to be easily controlled by appropriately managing the anodizing conditions, such as electrolyte, voltage, time and temperature. Furthermore, the AAO template itself has advantages, including numerous morphological and good chemical and thermal stability properties [4,5]. Therefore, using the AAO template characteristics, many studies have been conducted for application in super capacitors and sensors.…”

Influence of electrodeposition techniques on Ni nanostructures

“…In particular, AAM is an almost ideal template, due to its morphology consisting in an ordered array of cylindrical pores perpendicular to the surface [12,13]. Another advantage of these membranes is the possibility to control their morphological features by adjusting the anodizing parameters, such as surface treatment of aluminium, potential and time of anodizing, nature and composition of electrolyte [14][15][16][17][18][19][20][21][22][23][24]. Besides, it is very easy and cheap to fabricate these membranes.…”