The effect of oxalic and sulfuric ions on the photoluminescence of anodic aluminum oxide formed in a mixture of sulfuric and oxalic acid

2008 ◽  
Vol 94 (4) ◽  
pp. 939-942 ◽  
Author(s):  
Jian Wang ◽  
Cheng-Wei Wang ◽  
Shou-Yi Li ◽  
Feng Zhou
Keyword(s):  
Oxalic Acid ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Anodic Aluminum

The Change of Mechanical Properties for Anodic Aluminum Oxide by Heat Treatment

2006 ◽  
Vol 317-318 ◽  
pp. 323-326 ◽  
Author(s):  
D.J. Park ◽  
S.H. Kim ◽  
J.H. Lee ◽  
Seong Hee Lee ◽  
Yong Ho Choa
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Mechanical Property ◽  
Oxalic Acid ◽  
Aluminum Oxide ◽  
Crystalline Phase ◽  
Anodic Aluminum Oxide ◽  
Treatment Temperature ◽  
Microstructure Change ◽  
Anodic Aluminum

Anodic aluminum oxide (AAO) was prepared in three types of aqueous solutions with various applied voltage. The mechanical property of AAO prepared in different electrolyte was investigated and hardness was increased on account of the increase of the thickness between pores. The mechanical property and microstructure change of AAO prepared in oxalic acid at 40V was investigated by heat treatment. AAO prepared in oxalic acid at 40V was transformed from amorphous to crystalline phase by heat treatment above 800oC and hardness was increased about 2.6 times with increase of heat treatment temperature.

Annealing induced structural and phase transitions in anodic aluminum oxide prepared in oxalic acid electrolyte

2020 ◽  
Vol 381 ◽  
pp. 125159 ◽  
Author(s):  
I.V. Roslyakov ◽  
I.V. Kolesnik ◽  
E.E. Levin ◽  
N.S. Katorova ◽  
P.P. Pestrikov ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Oxalic Acid ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Acid Electrolyte ◽  
Anodic Aluminum

Synthesis of iridescent Ni-containing anodic aluminum oxide films by anodization in oxalic acid

2016 ◽  
Vol 52 ◽  
pp. 107-110 ◽  
Author(s):  
Qin Xu ◽  
Hong-Mei Ma ◽  
Yan-Jun Zhang ◽  
Ru-Song Li ◽  
Hui-Yuan Sun
Keyword(s):  
Oxalic Acid ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Oxide Films ◽  
Anodic Aluminum

Preparation of Highly Ordered Anodic Aluminum Oxide Membranes with Wide-Range Tunable Pore Intervals in Mixed Electrolytes

NANO ◽  
2016 ◽  
Vol 11 (05) ◽  
pp. 1650051
Author(s):  
Yi Chang ◽  
Zhiyuan Ling
Keyword(s):  
Oxalic Acid ◽  
Phosphoric Acid ◽  
Aluminum Oxide ◽  
Anodic Oxidation ◽  
Anodic Aluminum Oxide ◽  
Ionization Constants ◽  
Mixed Electrolytes ◽  
Anodic Aluminum ◽  
Oxidation Current ◽  
Acid Radical

Highly ordered anodic aluminum oxide (AAO) membranes with pore interval from 100[Formula: see text]nm to 520[Formula: see text]nm were fabricated successfully in the mixed electrolytes, which are composed of 0.3[Formula: see text]M oxalic acid and 1[Formula: see text]wt.% phosphoric acid/0.01[Formula: see text]M aluminum oxalate. The study results show that oxalic acid volume percentage has an approximate linear relationship with the optimal anodic oxidation voltage. The optimal anodic oxidation voltage is basically equal to the critical oxidation voltage. The theoretical analysis suggests that the anodic oxidation current is closely related to the ionization constants of acid radical ion in the electrolyte. Since the secondary ionization constant of oxalic radical ion is greater than that of phosphoric acid radical ion, the optimal anodic oxidation voltage increases and the steady anodic oxidation current decreases with the decrease of oxalic acid volume percent.

Optical constants of anodic aluminum oxide films formed in oxalic acid solution

2008 ◽  
Vol 516 (21) ◽  
pp. 7689-7694 ◽  
Author(s):  
Jian Wang ◽  
Cheng-Wei Wang ◽  
Yan Li ◽  
Wei-Min Liu
Keyword(s):  
Oxalic Acid ◽  
Acid Solution ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Optical Constants ◽  
Oxide Films ◽  
Oxalic Acid Solution ◽  
Anodic Aluminum

Thermal Hardening and Defects in Anodic Aluminum Oxide Obtained in Oxalic Acid: Implications for the Template Synthesis of Low-Dimensional Nanostructures

2019 ◽  
Vol 2 (4) ◽  
pp. 1986-1994 ◽  
Author(s):  
Jamal N. M. Aman ◽  
Jan K. Wied ◽  
Qasim Alhusaini ◽  
Stephanie Müller ◽  
Katharina Diehl ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Aluminum Oxide ◽  
Template Synthesis ◽  
Anodic Aluminum Oxide ◽  
Thermal Hardening ◽  
Anodic Aluminum ◽  
Low Dimensional
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