Molten-Salt Synthesis of Bismuth Titanate and Fabrication of PbTiO&lt;inf&gt;3&lt;/inf&gt;-based Textured Ceramics

He, Jingyan; Comyn, Tim P.; Skidmore, Thomas A.; Milne, Steven J.; Bell, Andrew J.

doi:10.1109/isaf.2006.4387830

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…Please quote the above paper when referring to this work 2 choice of salt used [9]. BaTiO 3 [10], Bi 4 Ti 3 O 12 [11], PZT [12], and Pb-based niobates [13] are some of the single phase electronic ceramics that have utilized molten chlorides, sulphates and carbonates in their synthesis [9]. MSS proceeds by two mechanisms depending on if all the reactants are soluble or if some are not [12].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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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 Pbbased 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 K 0.5 Na 0.5 NbO 3 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 NaNbO 3 production instead of K 0.5 Na 0.5 NbO 3 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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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“…These have included not only Bi 4 Ti 3 O 12 itself, but also other materials for which Bi 4 Ti 3 O 12 acts as a seed or template in processes such as reactive template grain growth. 4,5 Textured ceramics display improved piezoelectric properties in comparison with their nontextured counterparts, for example, the predicted piezoelectric charge coefficient, d 33 , goes from 220 to 510 pC/N when the texture fraction varies between 0 and 100 for PbZr 0.52 Ti 0.48 O 3 (PZT 52/48). 6 A number of methods have been reported for the preparation of Bi 4 Ti 3 O 12 platelets, including flux growth, 7 hydrothermal synthesis, 8 and molten salt synthesis.…”

Section: Introductionmentioning

confidence: 99%

“…Due to its tendency for growth in a plate‐like morphology, 3 it has been used extensively as a template to produce crystallographically textured ceramics. These have included not only Bi 4 Ti 3 O 12 itself, but also other materials for which Bi 4 Ti 3 O 12 acts as a seed or template in processes such as reactive template grain growth 4,5 . Textured ceramics display improved piezoelectric properties in comparison with their nontextured counterparts, for example, the predicted piezoelectric charge coefficient, d 33 , goes from 220 to 510 pC/N when the texture fraction varies between 0 and 100 for PbZr 0.52 Ti 0.48 O 3 (PZT 52/48) 6 …”

Section: Introductionmentioning

confidence: 99%

Electron Backscattered Diffraction of MonoCrystalline Bismuth Titanate

Palizdar

Comyn

et al. 2010

Journal of the American Ceramic Society

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Bismuth titanate (Bi4Ti3O12) is an important precursor in the fabrication of textured piezoelectric materials using reactive template grain growth. We report on a study of the crystallographic orientation of bismuth titanate platelets, grown via molten salt synthesis. Electron backscattered diffraction (EBSD) of single platelets reveals that they have a unique crystallographic orientation, with the small thickness direction commensurate with the c‐axis. X‐ray diffraction of platelets drop cast onto a glass substrate confirm this orientation; this time, the platelets are strongly textured with the c‐axis normal to the glass substrate surface. Contrary to EBSD experiments on ceramic materials, no specialist sample preparation such as polishing or coating was required; a suspension of the powders in isoproponal alcohol was simply drop cast onto an scanning electron microscopic stub.

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Molten-Salt Synthesis of Bismuth Titanate and Fabrication of PbTiO<inf>3</inf>-based Textured Ceramics

Cited by 2 publications

References 11 publications

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

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

Electron Backscattered Diffraction of MonoCrystalline Bismuth Titanate

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