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January 26th, 2010

Microstructure and Electrical Properties of (K, Na, Li)NbO3–Pb(Zr,Ti)O3 Piezoelectric Ceramics

Published on January 26th, 2010 | By: Eileen De Guire

Volume 93 Issue 1, Pages 167 – 170

 

Qiyi Yin, Shuoguo Yuan, Qiang Dong, Changan Tian
Published Online: Oct 23 2009 10:27AM
DOI: 10.1111/j.1551-2916.2009.03367.x

 

ABSTRACT
A new type (1-x)(K0.485Na0.485Li0.03)NbO3-xPb(Zr0.53Ti0.47)O3 piezoelectric ceramics was fabricated by conventional ceramics sintering technique. Their microstructure and electrical properties of the ceramics were also studied. X-ray diffraction and scanning electron microscopy patterns indicate that all ceramics samples exhibit a pure perovskite and highly dense structure, and the coexistence of the tetragonal and orthorhombic phases is formed; The ceramic with x=0.75 exhibits the following excellent properties: d33=363 pC/N, kp=63%, Qm=142, ɛr=1590, tan δ=1.70%, Pr=28.6 μC/cm2, Ec=0.89 kV/mm, Tc=295°C. These results indicate that the ceramic is a promising candidate for piezoelectric ceramics in practical applications.

Online Access to Journal of the American Ceramic Society


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