The effect of n-alcohols on porous anodic alumina formed by self-organized two-step anodizing of aluminum in phosphoric acid

2010 ◽  
Vol 204 (11) ◽  
pp. 1729-1737 ◽  
Author(s):  
Leszek Zaraska ◽  
Grzegorz D. Sulka ◽  
Marian Jaskuła
Keyword(s):  
Phosphoric Acid ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Self Organized

Surface morphology control on porous anodic alumina in phosphoric acid

2010 ◽  
Vol 518 (14) ◽  
pp. 3797-3800 ◽  
Author(s):  
Rong Zhang ◽  
Kaiming Jiang ◽  
Guqiao Ding
Keyword(s):  
Surface Morphology ◽  
Phosphoric Acid ◽  
Morphology Control ◽  
Anodic Alumina ◽  
Porous Anodic Alumina

Sputter Deposition of Self-Organized Nanoclusters Through Porous Anodic Alumina Templates

2007 ◽  
Vol 7 (2) ◽  
pp. 641-646 ◽  
Author(s):  
Smita Gohil ◽  
Ramesh Chandra ◽  
Bhagyashree Chalke ◽  
Sangita Bose ◽  
Pushan Ayyub
Keyword(s):  
Ambient Pressure ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Average Pore ◽  
Self Organized ◽  
Atomic Force ◽  
Sputter Deposited ◽  
Anodic Alumina Templates ◽  
Hexagonally Ordered ◽  
Ordered Porous

Silver nanoparticles were sputter deposited through self organized hexagonally ordered porous anodic alumina templates that were fabricated using a two-step anodization process. The average pore diameter of the template was 90 nm and the interpore spacing was 120 nm. Atomic force microscope studies of the sputter-deposited silver nanoparticle array on a Si substrate indicate an approximate replication of the porous anodic alumina mask. The nature of the deposition depends strongly on the process parameters such as sputtering voltage, ambient pressure and substrate temperature. We report a detailed study of the sputtering conditions that lead to an optimal deposition through the template.

scholarly journals Etching the Oxide Barrier of Micrometer-Scale Self-Organized Porous Anodic Alumina Membranes

2015 ◽  
Vol 162 (4) ◽  
pp. E47-E50 ◽  
Author(s):  
Jonathan Bellemare ◽  
Louis-Philippe Carignan ◽  
Frédéric Sirois ◽  
David Ménard
Keyword(s):  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Alumina Membranes ◽  
Self Organized ◽  
Oxide Barrier ◽  
Micrometer Scale

Tracer studies relating to alloying element behaviour in porous anodic alumina formed in phosphoric acid

2010 ◽  
Vol 55 (9) ◽  
pp. 3175-3184 ◽  
Author(s):  
S.J. Garcia-Vergara ◽  
H. Habazaki ◽  
P. Skeldon ◽  
G.E. Thompson
Keyword(s):  
Phosphoric Acid ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
Alloying Element ◽  
Tracer Studies

Synthesis of Porous Anodic Alumina (PAA) on Aluminum Alloy AA6061 in Mixture of Phosphoric Acid and Oxalic Acid

2016 ◽  
Vol 857 ◽  
pp. 237-241
Author(s):  
Chun Hong Voon ◽  
Bee Ying Lim ◽  
K.L. Foo ◽  
Uda Hashim ◽  
Sung Ting Sam ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Oxalic Acid ◽  
Phosphoric Acid ◽  
Anodic Alumina ◽  
Porous Anodic Alumina ◽  
X Ray Diffraction ◽  
X Ray ◽  
Interpore Distance ◽  
Diffraction Patterns ◽  
Ordered Porous

In this study, porous anodic alumina was formed on aluminum alloy AA6061 by anodizing using mixture of 0.3 M oxalic acid and phosphoric acid with concentration ranged from 0.1 M to 1.0 M. AA6061 alloys were anodized at 40 V and 25°C for 60 minutes. FESEM images show that the uniformity of the pores arrangement of porous anodic alumina decreased with the increasing concentration of phosphoric acid in the electrolyte. Well-ordered porous anodic alumina was formed in mixture of 0.3 M oxalic acid and 0.1 M phosphoric acid while disordered porous anodic alumina were formed when the concentration of phosphoric acid were in the range of 0.3 M to 1.0 M. Pore size and interpore distance were found to increase with the concentration of phosphoric acid in the mixture. X-ray diffraction patterns show that to γ-Al2O3 were formed on the surface of AA6061 after the anodizing process, regardless of the concentration of phosphoric acid in the mixture electrolyte.

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