Premium
Processing and Properties of Textured Potassium Sodium Niobate [K,Na]NbO 3 Ceramic Ribbons by Alginate Gelation Method
Author(s) -
MensurAlkoy Ebru,
BerksoyYavuz Ayşe,
Alkoy Sedat
Publication year - 2014
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/jace.13139
Subject(s) - materials science , sintering , ceramic , potassium niobate , texture (cosmology) , natural bond orbital , mineralogy , ribbon , grain growth , chemical engineering , potassium , composite material , grain size , dielectric , metallurgy , ferroelectricity , chemistry , image (mathematics) , optoelectronics , artificial intelligence , computer science , engineering , density functional theory , computational chemistry
Random and <001> textured potassium sodium niobate – [ K,Na ] NbO 3 ( 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 ‐ NaNbO 3 ( 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.