Processing and Properties of Textured Potassium Sodium Niobate [K, Na]NbO3 Ceramic Ribbons by Alginate Gelation Method. Issue 11 (25th July 2014)

• Record Type: Journal Article
• Authors: Mensur‐Alkoy, Ebru; Berksoy‐Yavuz, Ayşe; Alkoy, Sedat; Trolier‐McKinstry, S.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 11(2014)
• Page Start: 3425
• Page End: 3433
• Publication Date: 2014-07-25
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.13139
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace13139-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Random and &lt;001&gt; textured potassium sodium niobate – [K, Na]NbO₃ (KNN) ceramics with 1 mole% CuO sintering aid were fabricated in ribbon form through a combination of novel alginate gelation process and templated grain growth methods using platelike sodium niobate ‐ NaNbO₃ (NN) template particles. The platelike NN template particles were prepared by a two‐step molten salt synthesis method. Ribbons were drawn from alginate‐based slurries without or with 10 wt% NN template particles using 50 mm long slit nozzle with a rectangular orifice of 10 mm × 1 mm. Development of crystallographic texture as a result of varying sintering time and temperature was evaluated through the calculation of the degree of orientation as measured by the Lotgering factor (ƒ₍₀₀₁₎) and an ƒ₍₀₀₁₎ of 0.81 was achieved. The electrical properties of textured ribbons were evaluated with polarization and strain versus electric field measurements.</p> </abstract>