Fabrication and high-temperature structural characterization study of porous anodic alumina membranes

K. S. Choudhari, P. Sudheendra, N. K. Udayashankar

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Porous anodic alumina (PAA) membranes with highly ordered array of nanopores were prepared by twostep anodization process. Studies on structural and thermal properties and the thermal stability of the prepared PAA membranes were carried out. Investigation using scanning electron microscopy, atomic force microscopy, X-ray diffraction, thermal analysis and infrared spectroscopy was performed on the prepared PAA membranes at room temperature and in the temperature range 600-1,400 °C. The as-prepared PAA membranes revealed the amorphous nature. Polycrystalline PAA membranes were obtained by annealing carried out at different temperatures. Annealing study confirmed that the heat treatment transformed the amorphous PAA membranes to their crystalline phases, namely, γ-alumina at about 870 °C and then to α-alumina around 1,250 °C.

Original languageEnglish
Pages (from-to)1053-1062
Number of pages10
JournalJournal of Porous Materials
Volume19
Issue number6
DOIs
Publication statusPublished - 01-12-2012

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Aluminum Oxide
Alumina
Membranes
Fabrication
Temperature
Annealing
Nanopores
Thermoanalysis
Structural properties
Infrared spectroscopy
Atomic force microscopy
Thermodynamic stability
Thermodynamic properties
Heat treatment
Crystalline materials
X ray diffraction
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

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Fabrication and high-temperature structural characterization study of porous anodic alumina membranes. / Choudhari, K. S.; Sudheendra, P.; Udayashankar, N. K.

In: Journal of Porous Materials, Vol. 19, No. 6, 01.12.2012, p. 1053-1062.

Research output: Contribution to journalArticle

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