Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/75793
Title: Synthesis of metastable Bi6Ti5WO22 phase by the mechanochemical method
Authors: Jardiel, Teresa
Calatayud, David G.
Rodríguez, Mónica
Fernández-Hevia, Daniel
Caballero, Amador C.
UNESCO Clasification: 23 Química
Keywords: Mechanosynthesis
Powder Technology
Phase Transformation
Electroceramics
Issue Date: 2013
Journal: Materials Letters 
Abstract: Mechanochemical processing has been demonstrated as a powerful tool for preparing metastable phases. In this work we have successfully applied it to synthesize a novel Bi6Ti5WO22 phase belonging to the Bi2O3-TiO2-WO3 ternary system. Attempts to obtain this phase by a solid state reaction method as well as by chemical precipitation have failed, confirming that cubic Bi6Ti5WO22 shows a metastable nature. The employ of high-energy milling allows a reduction in both the calcination temperature and time required to obtain a crystalline sample (thereby reducing the Bi-losses by vaporization). As a consequence a pure Bi6Ti5WO22 phase has been prepared which remains stable up to temperatures around 800 degrees C.
URI: http://hdl.handle.net/10553/75793
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2012.12.016
Source: Materials Letters [ISSN 0167-577X], v. 94, p. 58-60, (Marzo 2013)
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