公开(公告)号：KR1020100012199A

公开(公告)日：2010-02-08

申请号：KR1020080073461

申请日：2008-07-28

Applicant: (재)울산테크노파크

Inventor： 김영혁 ,  태원필 ,  허대영 ,  남두현 ,  이재신

IPC: C04B35/495 ,  C04B35/453 ,  B82Y30/00

CPC classification number: H01L41/1873 ,  C04B35/495 ,  C04B35/64 ,  C04B2235/40 ,  C04B2235/5445 ,  C04B2235/5454 ,  G01H11/08 ,  H01L41/43

Abstract: PURPOSE: A ceramic composition of lead-free piezoelectric for the ultrasonic sensor is provided to ensure high mechanical quality factor and piezoelectric properties and to realize low-temperature sintering by adding Zn nanopowder in (Na0.5K0.5)NbO3 composition. CONSTITUTION: A ceramic composition of lead-free piezoelectric for the ultrasonic sensor comprises (Na0.5K0.5)NbO3 and 1 ~ 10 mol% of zinc(Zn) nanopowder as an additive. An average particle size of the zinc(Zn)nanopowder is 20 ~ 200nm. A ceramic composition of lead-free piezoelectric is manufactured by setting a sintering temperature to 980 ~ 1060°C and the temperature is lower than the sintering temperature of general PZT powder with 1200°C ~ 1350°C.

Abstract translation: 目的：提供超声波传感器的无铅压电陶瓷组合物，以确保高机械品质因数和压电性能，并通过在（Na0.5K0.5）NbO3组合物中添加Zn纳米粉末实现低温烧结。 构成：用于超声波传感器的无铅压电陶瓷组合物包括（Na0.5K0.5）NbO3和1〜10mol％的锌（Zn）纳米粉末作为添加剂。 锌（Zn）纳米粉末的平均粒径为20〜200nm。 通过将烧结温度设定为980〜1060℃，温度低于1200℃〜1350℃的普通PZT粉末的烧结温度，制造无铅压电陶瓷组合物。