A new self-ordering regime for fast production of long-range ordered porous anodic aluminum oxide films

Li, Yang; Qin, Yuyan; Jin, Shiyu; Hu, Xing; Ling, Zhiyuan; Liu, Qihong; Liao, Jinhui; Cheng, Chen; Shen, Yanhua; Liu, Jin

doi:10.1016/j.electacta.2015.07.119

Cited by 33 publications

(20 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9, curves 1, 2, 4); in an acid medium (pH < 4.4), it is shifted toward the longwavelength region of the spectrum with λ max ~ 523 nm (Fig. 9, curves 3,5,6). Upon switching to an acid medium, the color becomes deeper and changes from yellow to red (Fig.…”

Section: Complexationmentioning

confidence: 96%

“…Anodic films exhibit protective properties and a high abrasion resistance; they are an intermediate layer for the subsequent deposition of paints and varnishes; these films can form an electrical and thermal insulating layer; in addition, they can be used as a sublayer for the deposition of electroplated coatings. Oxidation makes it possible to obtain a sublayer consisting of oxygen compounds of aluminum with a required thickness (no less than 3 μm) and a developed system of pores and having an ordered crystal structure [3][4][5][6][7].…”

Section: Anodizingmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Azo Compounds on the Structure and Mechanical Properties of a Copper Coating Electrodeposited on Oxidized Aluminum Alloys

Белов¹,

Maximov²,

Belyaev

et al. 2021

Inorg. Mater. Appl. Res.

View full text Add to dashboard Cite

A new method for the electrodeposition of copper on oxidized aluminum alloys to form electrolytic coatings exhibiting high performance properties has been discussed. The effect of an azo compound-methyl red (MR)-additive on the structure and physicomechanical properties of the copper coatings formed on oxidized aluminum has been studied. Samples of aluminum alloys AD1M and AMg6BM have been subjected to an anodic treatment under identical conditions in two oxidation electrolytes of different compositions. Copper has been electrodeposited on oxidized aluminum alloy samples using a standard copper plating electrolyte. Comparison with a copper plating electrolyte of an identical composition with an MR azo dye additive has been conducted. The microstructure and adhesive properties of the copper coating formed on oxidized aluminum alloys have been studied. The relationship between the physicomechanical properties of the copper coating (microhardness, open porosity, adhesion) and the action of an azo dye additive in the copper plating electrolyte has been studied. The use of this technology will make it possible not only to increase the reliability and durability of machine parts and mechanisms but also to restore old parts and mechanisms.

show abstract

Section: Complexationmentioning

confidence: 96%

Section: Anodizingmentioning

confidence: 99%

Effect of Azo Compounds on the Structure and Mechanical Properties of a Copper Coating Electrodeposited on Oxidized Aluminum Alloys

Белов¹,

Maximov²,

Belyaev

et al. 2021

Inorg. Mater. Appl. Res.

View full text Add to dashboard Cite

show abstract

“…However, in typical MA processes, hexagonally packed nanopores with fixed interpore distance ( D int ) of 60 nm, 100 nm and 500 nm can only be obtained17181920. To resolve this issue, HA characterized by exponential decreased current from a high value is developed to broaden the D int range, which have recently attracted much attentions2122232425. To date, highly ordered nanopore with continuously tunable D int in the range of 70–490 nm can be realized by HA in various electrolyte systems2223.…”

mentioning

confidence: 99%

Fabrication of Self-Ordered Alumina Films with Large Interpore Distance by Janus Anodization in Citric Acid

Wen

et al. 2016

Sci Rep

View full text Add to dashboard Cite

Self-organized porous anodic alumina (PAA) formed by electrochemical anodization have become a fundamental tool to develop various functional nanomaterials. However, it is still a great challenge to break the interpore distance (Dint) limit (500 nm) by using current anodization technologies of mild anodization (MA) and hard anodization (HA). Here, we reported a new anodization mode named “Janus anodization” (JA) to controllably fabricate self-ordered PAA with large Dint at high voltage of 350–400 V. JA naturally occurs as anodizing Al foils in citric acid solution, which possessing both the characteristics of MA and HA. The process can be divided into two stages: I, slow pore nucleation stage similar to MA; II, unequilibrium self-organization process similar to HA. The as-prepared films had the highest modulus (7.0 GPa) and hardness (127.2 GPa) values compared with the alumina obtained by MA and HA. The optical studies showed that the black films have low reflectance (<10 %) in the wavelength range of 250–1500 nm and photoluminescence property. Dint can be tuned between 645–884 nm by controlling citric acid concentration or anodization voltage. JA is a potential technology to efficiently and controllably fabricate microstructured or hybrid micro- and nanostructured materials with novel properties.

show abstract

“…The simple electrochemical method is also very convenient for wide applications. 5−12 It is universally acknowledged that simple anodization can enable fabrication of nanostructured oxide layers on the surface of various metals and alloys, such as Al, 6,7 Ti, 8,9 Pb, Co, Zr, 10,11 Ti-2Al-1.5Mn alloy, 12 etc. However, the formation mechanisms of these porous oxides are still controversial.…”

Section: Introductionmentioning

confidence: 99%

Growth Model of the Tin Anodizing Process and the Capacitive Performance of Porous Tin Oxides

Niu

et al. 2020

J. Phys. Chem. C

View full text Add to dashboard Cite

Nanoporous tin oxide layers were fabricated in NaOH during potentiostatic anodization at a low potential. With increasing potential, the nanochannel became fragmentized and a stacked morphology was formed. The total anodizing current was separated into ionic current and electronic current to explain the various morphologies of nanotubes. The ionic current determines ion migration and oxide growth. The electronic current determines oxygen evolution, porous structure formation, and oxide volume expansion. The continuous decline of the total current–time curve at 8 V was explained by a capacitor model. Through cyclic voltammetry, it was proposed that the stacked morphology exhibits a high specific capacitance (11.36 mF cm–2). Extending the annealing time can increase the crystallinity, thus improving the capacitive performance. The stacked morphology allows electrolytes to permeate the entire portion of the nanochannel more evenly, increasing the effective surface area of the electrode in the electrochemical process and thus improving the capacitive properties. The formation of a stacked morphology is related to the intense release of oxygen gas.

show abstract

A new self-ordering regime for fast production of long-range ordered porous anodic aluminum oxide films

Cited by 33 publications

References 64 publications

Effect of Azo Compounds on the Structure and Mechanical Properties of a Copper Coating Electrodeposited on Oxidized Aluminum Alloys

Effect of Azo Compounds on the Structure and Mechanical Properties of a Copper Coating Electrodeposited on Oxidized Aluminum Alloys

Fabrication of Self-Ordered Alumina Films with Large Interpore Distance by Janus Anodization in Citric Acid

Growth Model of the Tin Anodizing Process and the Capacitive Performance of Porous Tin Oxides

Contact Info

Product

Resources

About