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Your search keyword '"Jiang, Minhong"' showing total 18 results
Start Over Author "Jiang, Minhong" Publisher springer science and business media llc
18 results on '"Jiang, Minhong"'

8. Structure and temperature-stability of piezoelectric properties of K0.5Na0.5NbO3–LiSbO3–Al(Fe0.9Mn0.1)O3 lead-free ceramics

Author

Zhao Guangqian, Ma Jiafeng, Jiang Minhong, Peng Ling, and Zhang Jinwei

Subjects
Diffraction, Materials science, Analytical chemistry, Condensed Matter Physics, Piezoelectricity, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Crystallography, Tetragonal crystal system, visual_art, Phase (matter), visual_art.visual_art_medium, Curie temperature, Orthorhombic crystal system, Ceramic, Electrical and Electronic Engineering, Solid solution
Abstract

(1 − x)(0.95K0.5Na0.5NbO3–0.05LiSbO3) − xAl(Fe0.9Mn0.1)O3 (KNN–LS–AFM) lead-free piezoelectric ceramics have been fabricated by a traditional ceramic technique. The structure and piezoelectric properties of this system have been studied. The result of X-ray diffraction analysis shows that LS and AFM diffuse into the KNN lattices to form a new solid solution with a perovskite structure. The phase structure of the ceramics has a transition from the coexistence of tetragonal and orthorhombic phases to single tetragonal phase, with increasing the AFM content. The orthorhombic–tetragonal phase-transition peaks in the temperature-dielectric constant (e r ) plots first shifts to the room temperature and then almost disappears, while the Curie temperature does not change evidently with the addition of AFM. The ceramic at x = 0.004 exhibits the best piezoelectric properties: d 33 = 285 pC/N, k p = 53.9 %, Q m = 22.64. The Curie temperature is about 350 °C. Below the Curie temperature, all samples show a temperature-stable piezoelectric constant, indicating the possibility of applications from the room temperature to high temperature.

Published
2015
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11. Structure and piezoelectric properties of K0.5Na0.5NbO3–AlFeO3 lead-free ceramics by using AlFeO3 as a sintering aid

Author

Li Yongxiang, Wu Xiaofei, Cheng Gang, Ma Lei, Rao Guanghui, Gu Zhengfei, Jiang Minhong, Du Yusong, and Peng Ling

Subjects
Materials science, visual_art, visual_art.visual_art_medium, Sintering, Ceramic, Dielectric, Electrical and Electronic Engineering, Composite material, Condensed Matter Physics, Microstructure, Piezoelectricity, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Abstract

The (1 − x)K0.5Na0.5NbO3–xAlFeO3 ((1 − x)KNN–xAF) (x = 0.01–0.08) lead-free piezoelectric ceramics were prepared at low temperature of 1,000 °C by conventional ceramic processing. And AF was used as a sintering aid in order to improve the sintering behavior of KNN. The effect of AF addition on the microstructure, dielectric and piezoelectric properties of the ceramics have been investigated. The results indicate that a small amount of AF can improve the sintering performance and piezoelectric properties of the ceramics effectively. The KNN–AF ceramics for x = 0.03 show the best piezoelectric properties: d 33 = 116 pC/N, k p = 32.9 %, Q m = 114.8, T C = 382 °C, P r = 21.8 μC/cm2. This also indicates that (1 − x)KNN–xAF ceramics are a promising lead-free piezoelectric candidate material because of its good properties, low-temperature sintering characteristics and plenty of Al2O3 and Fe2O3 resources with low cost.

Published
2013
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