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

Autor:	P. Sudheendra, N. K. Udayashankar, K. S. Choudhari
Rok vydání:	2012
Předmět:	Materials science Annealing (metallurgy) Scanning electron microscope Mechanical Engineering Analytical chemistry Atmospheric temperature range Amorphous solid Membrane Chemical engineering Mechanics of Materials General Materials Science Thermal stability Crystallite Thermal analysis
Zdroj:	Journal of Porous Materials. 19:1053-1062
ISSN:	1573-4854 1380-2224
DOI:	10.1007/s10934-012-9568-z
Popis:	Porous anodic alumina (PAA) membranes with highly ordered array of nanopores were prepared by two-step 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::53d4c4e128e298ad42ea1364d08592ef https://doi.org/10.1007/s10934-012-9568-z Zobrazit plný text záznamu Full text from SpringerLink