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Synthesis of Nanocrystalline α‐Alumina Powder Using Triethanolamine
Author(s) -
Pati Ranjan K.,
Ray Jagadish C.,
Pramanik Panchanan
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb01104.x
Subject(s) - nanocrystalline material , triethanolamine , crystallite , materials science , thermogravimetric analysis , differential thermal analysis , transmission electron microscopy , chemical engineering , particle size , thermal analysis , analytical chemistry (journal) , metallurgy , chemistry , nanotechnology , thermal , organic chemistry , physics , optics , meteorology , diffraction , engineering
Nanocrystalline α‐Al 2 O 3 powders have been prepared by pyrolysis of a complex compound of aluminum with triethanolamine (TEA). The soluble metal‐ion–TEA complex forms the precursor material on complete dehydration of the complex of aluminum‐TEA. The single‐phase α‐Al 2 O 3 powder has resulted after heat treatment at 1025°C. The precursors and the heat‐treated final powders have been characterized by X‐ray diffractometry, thermogravimetric and differential thermal analysis, and transmission electron microscopy (TEM). The average particle sizes as measured from X‐ray line broadening and TEM are ∼25 nm. The powder has crystallite sizes of the same order indicates the poor agglomeration of crystallites.