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。

公开(公告)号：KR1020100033002A

公开(公告)日：2010-03-29

申请号：KR1020080091947

申请日：2008-09-19

Applicant: (재)울산테크노파크

Inventor： 김영혁 ,  태원필 ,  허대영 ,  지한나

IPC: H01L41/187 ,  C04B35/495 ,  C04B35/64 ,  A61H23/02

CPC classification number: H01L41/187 ,  A61H23/0245 ,  A61H2201/1207 ,  C04B35/495 ,  C04B35/64

Abstract: PURPOSE: A free-lead piezoelectric ceramic composition for an ultrasonic oscillator is provided to enhance sintering property and to form the free-lead piezoelectric ceramic composition at a low sintering temperature. CONSTITUTION: A free-lead piezoelectric ceramic composition for an ultrasonic oscillator is composed of (Na0.5K0.5)NbO3. An additive which is added to the composition contains 0.1 ~ 3 mol% of metal oxide selected from Fe2O or NiO and 0.1 ~ 3 mol% of metal oxide selected from MnCO3 or CuO. A sintering temperature of the free-lead piezoelectric ceramic composition which is composed of (Na0.5K0.5)NbO3 is 1000 ~ 1075°C.

Abstract translation: 目的：提供一种用于超声波振荡器的自由铅压电陶瓷组合物，以提高烧结性能，并在低烧结温度下形成自由铅压电陶瓷组合物。 构成：用于超声波振荡器的自由铅压电陶瓷组合物由（Na0.5K0.5）NbO3组成。 添加到组合物中的添加剂含有选自Fe 2 O或NiO的0.1〜3mol％的金属氧化物和选自MnCO 3或CuO的0.1〜3mol％的金属氧化物。 由（Na0.5K0.5）NbO3组成的自由铅压电陶瓷组合物的烧结温度为1000〜1075℃。

公开(公告)号：KR101043041B1

公开(公告)日：2011-06-21

申请号：KR1020080091947

申请日：2008-09-19

Applicant: (재)울산테크노파크

Inventor： 김영혁 ,  태원필 ,  허대영 ,  지한나

IPC: H01L41/187 ,  C04B35/495 ,  C04B35/64 ,  A61H23/02

Abstract: 본 발명은 초음파 진동자용 무연 압전세라믹스 조성물에 관한 것으로서, (Na
0.5 K
0.5 )NbO
3 압전 세라믹스에 소결 첨가제 CuO, NiO, Fe
2 O
3 , MnCO
3 등을 첨가하여 소결특성을 향상시키며, 높은 기계적 품질계수(Q
m )와 높은 전기기계결합계수(k
p )를 갖는 무연 압전세라믹스 조성물을 낮은 소결 온도에서 제공하는 것에 관한 것이다.
무연 압전 세라믹스, 전기기계결합계수, 기계적 품질계수, 초음파 진동자