Effect of Li2O addition on piezoelectric properties of NKN-5LT ceramics

被引：1

作者：

Kim, Min-Soo ^{[1
]}

Lee, Dae-Su ^{[1
]}

Park, Eon-Cheol ^{[1
]}

Jeong, Soon-Jong ^{[1
]}

Kim, In-Sung ^{[1
]}

Song, Jae-Sung ^{[1
]}

机构：

[1] Korea Electrotechnol Res Inst, Elect & Magnet Devices Grp, 28-1 Seongju Dong, Chang Won 641120, Kyongnam, South Korea

来源：

PROGRESS IN POWDER METALLURGY, PTS 1 AND 2 | 2007年 / 534-536卷

关键词：

piezoelectric; lead-free; sodium potassium niobate; lithium oxide;

D O I：

10.4028/www.scientific.net/MSF.534-536.1525

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently alkali oxide materials, such as sodium - potassium niobate have drawn much attention due to their ultrasonic applicability and are also considered as promising candidates for a piezoelectric lead-free system. However, it is difficult to sinter such NKN-based materials via conventional sintering process. Therefore, in this Study, dense 0.95(Na0.5K0.5)NbO3-0.05LiTaO(3) (NKN-5LT) ceramics were developed by conventional sintering process. Sintering temperature was towered by adding Li2O as a sintering aid. The electrical properties of NKN-5LT ceramics were investigated as a function of Li2O concentration. At the addition of 1 mol% Li2O, electromechanical coupling factor (k(P)) and piezoelectric coefficient (d(33)) of NKN-5LT ceramics were found to reach the highest values of 0.37 and 250 pC/N, respectively.

引用

页码：1525 / +

页数：2

共 19 条

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