A new chemical route for the synthesis of nano-crystalline α-Al2O3 powder

Autor:	Ranjan K. Pati, Panchanan Pramanik, A Janbey, Saad F. Tahir
Rok vydání:	2001
Předmět:	Aluminium oxides Thermogravimetric analysis Materials science Infrared spectroscopy Mineralogy Chemical engineering Transmission electron microscopy Triethanolamine Differential thermal analysis Materials Chemistry Ceramics and Composites medicine Particle Crystallite medicine.drug
Zdroj:	Journal of the European Ceramic Society. 21:2285-2289
ISSN:	0955-2219
DOI:	10.1016/s0955-2219(00)00322-8
Popis:	Nano crystalline α-Al 2 O 3 powders have been prepared by pyrolysis of a complex compound of aluminium with triethanolamine (TEA) and sucrose. The soluble metal ion-TEA complex with sucrose forms the precursor material on complete dehydration. The single-phase α-Al 2 O 3 powder has resulted after heat treatment at 1150°C. The precursors and the heat treated final powders have been characterized by X-ray diffractometry (XRD), differential thermal and thermogravimetric analysis TG/DTA, Infrared spectroscopy (IR) and transmission electron microscopy (TEM). The average particle sizes as measured from X-ray line broadening and transmission electron microscopy studies are around ∼20 nm. The powder which has crystallite sizes of the same order with the particle size indicates the low agglomeration of crystallites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28967c711e9c5cb60a41cfd0599ded30 https://doi.org/10.1016/s0955-2219(00)00322-8 Zobrazit plný text záznamu Full Text from ScienceDirect