The effect of annealing on the photoluminescent and optical properties of porous anodic alumina films formed in sulfamic acid

Stojadinović, Stevan; Nedić, Zoran; Belča, I.; Vasilić, Rastko; Kasalica, B.; Petković, Marija; Zeković, Lj.

doi:10.1016/j.apsusc.2009.08.056

Cited by 44 publications

(20 citation statements)

References 28 publications

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“…PL spectra of barrier oxide films formed in 12-tungstophosphoric acid have the same shape as PL spectra of porous oxide films formed in inorganic electrolytes (sulfuric acid and sulfamic acid) [19,32,33], even thought PL intensity of porous alumina films is much higher than PL intensity of barrier oxide films. Huang et al identified two types of PL bands [32].…”

Section: Pl Spectra Of Barrier Oxide Films and Peo Coatingsmentioning

confidence: 67%

Luminescence properties of oxide films formed by anodization of aluminum in 12-tungstophosphoric acid

Stojadinović

Vasilić

Petković

et al. 2010

Electrochimica Acta

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Section: Pl Spectra Of Barrier Oxide Films and Peo Coatingsmentioning

confidence: 67%

Luminescence properties of oxide films formed by anodization of aluminum in 12-tungstophosphoric acid

Stojadinović

Vasilić

Petković

et al. 2010

Electrochimica Acta

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“…From previous studies, it is known that the PL of anodised aluminium oxide depends on acid electrolyte, anodisation voltage, pore diameter, anodisation regime, thermal treatment and other processing parameters . It was observed that PL intensities of anodised aluminium, which was prepared in the oxalic acid electrolyte, are higher than the PL intensities of the one anodised in sulphuric or phosphoric acid .…”

Section: Resultsmentioning

confidence: 99%

Determination of the dye penetration rate in porous aluminum oxide using Raman spectroscopy

Matijošius

Asadauskas

Bikulčius

et al. 2019

Coloration Technology

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Oxidised aluminum coatings are useful in various high technology applications to protect surfaces from negative environmental effects. In this study, aluminum discs and foils of industrial alloys were anodised in a sulphuric acid/oxalic acid electrolyte. Scanning electron microscopy was used to determine the pore diameter, distribution and surface porosity. The anodising procedure was adapted to produce near‐hollow templates on aluminium foil, onto which aqueous solutions of commercial chromium‐complexed anionic azodyes were dropped. Raman spectroscopy was used to detect the penetration of dye compounds based on the most intensive vibrational modes. Each dye was successfully monitored to assess its penetration rate and behaviour in the anodised coating. This method could be applied to characterise newly developed organic dyes for aluminum colouring.

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“…Specimens anodized with electrolyte concentration 5 vol.% and 10 vol.% produced a similar hardness value, which increased with 15 vol.% and then decreased rapidly with 20 vol.%. According to Stojadinovic,11 anodizing in sulfuric acid electrolyte forms amorphous Al 2 O 3 on surface. Vázquez 12 also confirmed aluminum anodizing produces the same amorphous alumina even with different kind of pre-treatments.…”

Section: Methodsmentioning

confidence: 99%

Determination of Sulfuric Acid Concentration for Anti-Cavitation Characteristics of Al Alloy by Two Step Anodizing Process to Forming Nano Porous

Lee¹,

Kim²,

Jeong³

et al. 2014

j nanosci nanotechnol

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Al alloy is a highly active metal but forms a protective oxide film having high corrosion resistance in atmosphere environment. However, the oxide film is not suitable for practical use, since the thickness of the film is not uniform and it is severly altered with formation conditions. This study focused on developing an aluminum anodizing layer having hardness, corrosion resistance and abrasion resistance equivalent to a commercial grade protective layer. Aluminum anodizing layer was produced by two-step aluminum anodizing oxide (AAO) process with different sulfuric acid concentrations, and the cavitation characteristics of the anodized coating layer was investigated. In hardness measurement, the anodized coating layer produced with 15 vol.% of sulfuric acid condition had the highest value of hardness but exhibited poor cavitation resistance due to being more brittle than those with other conditions. The 10 vol.% of sulfuric acid condition was thus considered to be the optimum condition as it had the lowest weight loss and damage depth.

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The effect of annealing on the photoluminescent and optical properties of porous anodic alumina films formed in sulfamic acid

Cited by 44 publications

References 28 publications

Luminescence properties of oxide films formed by anodization of aluminum in 12-tungstophosphoric acid

Luminescence properties of oxide films formed by anodization of aluminum in 12-tungstophosphoric acid

Determination of the dye penetration rate in porous aluminum oxide using Raman spectroscopy

Determination of Sulfuric Acid Concentration for Anti-Cavitation Characteristics of Al Alloy by Two Step Anodizing Process to Forming Nano Porous

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