کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438191 | 1398181 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lithium-modified (K0.5Na0.5)NbO3-BiAlO3 lead-free piezoelectric ceramics with high Curie temperature
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Lithium-modified (K0.5Na0.5)NbO3-BiAlO3 lead-free piezoelectric ceramics with high Curie temperature Lithium-modified (K0.5Na0.5)NbO3-BiAlO3 lead-free piezoelectric ceramics with high Curie temperature](/preview/png/5438191.png)
چکیده انگلیسی
Lead-free piezoelectric ceramics based on the perovskite solid solution 0.995(K0.5Na0.5)1âxLixNbO3-0.005BiAlO3 were prepared using conventional solid-state sintering techniques. According to the analysis of X-ray diffraction patterns, a pure perovskite phase structure could be achieved in the studied composition range of 0â¤xâ¤0.08. As the lithium content increased, the crystal structure gradually transitioned from orthorhombic to tetragonal symmetry. Furthermore, an orthorhombic-tetragonal phase boundary could be observed in ceramics with the compositions of 0.03â¤xâ¤0.05. The ceramics with compositions close to the orthorhombic-tetragonal phase boundary exhibited enhanced piezoelectric activity, possessing the largest values of piezoelectric constant d33, and planar and thickness electromechanical coupling coefficients, of 182 pC/N, 0.375, and 0.460, respectively. Additionally, it was found that these ceramics with excellent piezoelectric properties also possessed a high Curie temperature (~ 450 °C), indicating that they would be suitable for application in elevated-temperature piezoelectric devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 1, Part A, January 2017, Pages 634-640
Journal: Ceramics International - Volume 43, Issue 1, Part A, January 2017, Pages 634-640
نویسندگان
Yi Chen, Dandan Xue, Zhiqian Chen, Xianquan Jiang, Jie Gou, Gang Liu, Xiaokui Liu, Zunping Xu,