کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438263 | 1398182 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Piezoelectric and mechanical properties of CaO reinforced porous PZT ceramics with one-dimensional pore channels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
The formation of capillaries in sodium alginate gels is a dissipative process driven by unidirectional diffusion of divalent cations into sodium alginate sols. In the present work, we have prepared 3-1 type porous lead zirconate titanate (PZT) ceramics with oxides (CaO) being doped on a molecular level from the dissipative process by incorporating PZT particles into the sodium alginate gel matrix. By varying the concentration of cation solutions (CaCl2) from 0.5 mol/L to 2.5 mol/L, both the microstructure, doping amount of oxides (CaO) and crystalline phase of the porous PZT ceramics were tailored. Accordingly, increase in the concentration of Ca2+ has led to a reduction in the relative permittivity (εr) first, and then an increase, while the piezoelectric coefficient (d33 and d31) demonstrated an opposite variation tendency. The prepared samples possessed a maximal HFOM value of 4755Ã10-15 Paâ1 when the concentration of Ca2+ was 1.0 mol/L. Addition of CaO was found to improve the compressive strength of porous PZT ceramics, which was preferential to promoting the stability and reliability for application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 2, 1 February 2017, Pages 2063-2068
Journal: Ceramics International - Volume 43, Issue 2, 1 February 2017, Pages 2063-2068
نویسندگان
Wei Liu, Wenting Liu, Yanzhong Wang, Chaorui Xue, Jianhong Wang, Jinlong Yang,