Molten hydroxide synthesis as an alternative to molten salt sythesis for producing K0.5Na0.5NbO3 lead free ceramics

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dc.contributor.author Lusiola, Tony -
dc.contributor.author Bortolani, Francesca -
dc.contributor.author Zhang, Qi -
dc.contributor.author Dorey, Robert A. -
dc.date.accessioned 2013-01-22T23:02:16Z
dc.date.available 2013-01-22T23:02:16Z
dc.date.issued 2012-02-01T00:00:00Z -
dc.identifier.citation T. Lusiola, F. Bortolani, Q. Zhang, R.A. Dorey, Molten hydroxide synthesis as an alternative to molten salt synthesis for producing K0.5Na0.5NbO3 lead free ceramics, Journal of Materials Science, February 2012, Volume 47, Issue 4, pp 1938-1942
dc.identifier.issn 0022-2461 -
dc.identifier.uri http://dx.doi.org/10.1007/s10853-011-5984-8 -
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/7768
dc.description.abstract Lead-free piezoelectric materials have grown in importance through increased environmental concern and subsequent EU and worldwide legislation, with the aspiration to reduce the use of Pb-based materials in all sectors. Integration of the next generation of lead-free piezoelectric materials with substrates to form functional micro devices has received less attention. Low temperature synthesis methods for K0.5Na0.5NbO3 powder were developed to overcome the issue of poor purity of the final product during high temperature sintering. Molten hydroxide synthesis (MHS), derived from molten salt synthesis (MSS), has been developed to overcome a Na ion preference in the molten salt synthesis reaction that leads to NaNbO3 production instead of K0.5Na0.5NbO3 when stoichiometric amounts of precursors are used. MHS makes use of a KOH molten reaction aid in place of the NaCl/KCl molten salt mix of the MSS. In a two stage reaction K rich intermediate niobates are produced and subsequent reactions with Na species produce KNN. en_UK
dc.language.iso en_UK -
dc.publisher Springer Science Business Media en_UK
dc.rights The original publication is available at www.springerlink.com
dc.title Molten hydroxide synthesis as an alternative to molten salt sythesis for producing K0.5Na0.5NbO3 lead free ceramics en_UK
dc.type Article -


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