Sintering effect on electrical properties and morphology of lead-free Na0.92k0.08NbO3 ceramics
Sodium potassium niobate (NKN) powders were synthesized by the solid-state reaction method. The NKN ceramics for composition Na0.92K0.08NbO3 (NKN) were then fabricated by a two-step sintering technique. The effects of the two-step sintering on the properties of the ceramics were investigate...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
International Institute for the Science of Sintering, Beograd
2019-01-01
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Series: | Science of Sintering |
Subjects: | |
Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2019/0350-820X1904421K.pdf |
Summary: | Sodium potassium niobate (NKN) powders were synthesized by the solid-state
reaction method. The NKN ceramics for composition Na0.92K0.08NbO3 (NKN) were
then fabricated by a two-step sintering technique. The effects of the
two-step sintering on the properties of the ceramics were investigated. The
pure phase NKN was achieved for all sintering temperatures of 1100, 1150,
1200 and 1250°C. The observed change in the microstructure indicates that
the grain size increases with the increasing sintering temperatures. Also,
the two-step sintering technique produced a higher value of K/(K+Na)
weight-% ratio and peak dielectric constant for sintering temperatures 1100,
1150 and 1200°C. However, further increasing of the sintering temperatures
at 1250°C, reduces the K/(K+Na) weight-% ratio and the peak dielectric
constant (єc). |
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ISSN: | 0350-820X 1820-7413 |