کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1465433 989693 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Depolarization temperature and piezoelectric properties of (Bi1/2Na1/2)TiO3–(Bi1/2Li1/2)TiO3–(Bi1/2K1/2)TiO3 lead-free piezoelectric ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Depolarization temperature and piezoelectric properties of (Bi1/2Na1/2)TiO3–(Bi1/2Li1/2)TiO3–(Bi1/2K1/2)TiO3 lead-free piezoelectric ceramics
چکیده انگلیسی

The phase transition temperature and piezoelectric properties of x(Bi1/2Na1/2)TiO3–y(Bi1/2Li1/2)TiO3–z(Bi1/2K1/2)TiO3 [x + y + z = 1] (abbreviated as BNLKT100y–100z) ceramics were investigated. BNLKT100y–100z ceramics were prepared by conventional ceramic fabrication. The depolarization temperature Td was determined by the temperature dependence of the dielectric and piezoelectric properties. This study focuses on the effect of Li1+ and K1+ ions on Td and the piezoelectric properties of BNT ceramics. BNLKT100y–100z (y = 0–0.08) has a morphotropic phase boundary (MPB) between rhombohedral and tetragonal phases at z = 0.18–0.20, and high piezoelectric properties were obtained at the MPB composition. The piezoelectric constant d33 increased with increasing y; however, Td decreased above y = 0.06. The d33 and Td values of BNLKT4-20 and BNLKT8-20 were 176 pC/N and 171 °C, and 190 pC/N and 115 °C, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 35, Issue 1, January 2009, Pages 117–120
نویسندگان
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