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公开(公告)号：KR1020080108781A
公开(公告)日：2008-12-16
申请号：KR1020070056769
申请日：2007-06-11
Applicant: 한국전기연구원
IPC: H01L41/187 , H01L41/16
CPC classification number: H01L41/1873 , H01L41/09 , H01L41/113 , H01L41/43
Abstract: A composition and a manufacturing method of lead-free piezoelectric ceramics are provided to improve the piezoelectricity characteristic by adding Li2CO3 and Na2CO3 to the ceramic composition. The manufacturing method of the lead-free piezoelectric ceramic composition comprises the following steps: the step that mixes and pulverizes the sample of the Na2CO3, K2CO3, Li2CO3, Nb2O5, and Ta2O5 and dries and burns; the step that re-burns the burned sample; the step for remixing, re-pulverizing the sample; the step for sintering and molding the dried sample. Li2CO3 and Na2CO3 are added to the ceramic composition of (NaxK0.95-xLi0.05)(Nb0.95Ta0.05)O3.
Abstract translation: 提供无铅压电陶瓷的组成和制造方法，以通过向陶瓷组合物中加入Li 2 CO 3和Na 2 CO 3来改善压电特性。 无铅压电陶瓷组合物的制造方法包括以下步骤：将Na 2 CO 3，K 2 CO 3，Li 2 CO 3，Nb 2 O 5和Ta 2 O 5的样品混合并粉碎并干燥和烧伤; 重燃燃烧样品的步骤; 再混合，重新粉碎样品的步骤; 用于烧结和成型干燥样品的步骤。 向（NaxK0.95-xLi0.05）（Nb0.95Ta0.05）O3的陶瓷组合物中加入Li 2 CO 3和Na 2 CO 3。
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公开(公告)号：KR1020090004128A
公开(公告)日：2009-01-12
申请号：KR1020070068090
申请日：2007-07-06
Applicant: 한국전기연구원
IPC: H01L41/16 , H01L41/187
CPC classification number: H01L41/1873 , H01L41/083 , H01L41/09 , H01L41/43
Abstract: The free-lead ceramic piezoelectric compound for actuator is provided to manufacture the high reliability piezoelectric parts like the laminate piezoelectric actuator having the high electromechanical coupling coefficient, the piezo-electric constant and the low sintering temperature. The ceramic piezoelectric compound for the piezo actuator has the perovoskite powder of the ABO3 structure (NaxKyLiz) including Na2CO3, K2CO3, and Li2CO3 and Nb2O5 as the raw material. The sintering gradient material Li2CO3 is added and the ceramic piezoelectric compound for the piezo actuator has the composition of (NaxKyLiz) NbO3 + a mol% Li2CO3. Here, x,y,z and a have the range of 00.44
Abstract translation: 提供用于致动器的自由铅陶瓷压电复合材料，用于制造具有高机电耦合系数，压电常数和低烧结温度的层压压电致动器的高可靠性压电部件。 用于压电致动器的陶瓷压电复合材料具有包括Na 2 CO 3，K 2 CO 3和Li 2 CO 3以及Nb 2 O 5作为原料的ABO 3结构（NaxKyLiz）的膨胀型粉末。 加入烧结梯度材料Li2CO3，压电致动器的陶瓷压电复合物的组成为（NaxKyLiz）NbO3 + a mol％Li2CO3。 这里，x，y，z和a具有00.44
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公开(公告)号：KR1020100049912A
公开(公告)日：2010-05-13
申请号：KR1020080108951
申请日：2008-11-04
Applicant: 한국전기연구원
IPC: C04B35/495 , C04B35/19
CPC classification number: H01L41/1873 , C04B35/495 , C04B35/6261 , C04B35/62645 , C04B35/64 , C04B2235/3251 , C04B2235/442
Abstract: PURPOSE: A lead-free piezoelelctric ceramic composition for a piezoelectric sensor and actuator is provided to reduce environmeatl pollution caused by lead. CONSTITUTION: A lead-free piezoelelctric ceramic composition for a piezoelectric sensor and actuator contains Li_2CO_3 mole per x Na(Nb_0.8 Ta_0.2)O_3 - y K(Nb_0.8 Ta_0.2)O_3 - z Li(Nb_0.8 Ta_0.2)O_3 of powder. x is 0.47-0.53, y is 0.44-0.52, z is 0.01-0.03, sum of x, y, and z is 1, and a is 0.005-0.02.
Abstract translation: 目的：提供用于压电传感器和执行器的无铅压电陶瓷组合物，以减少铅引起的环境污染。 构成：用于压电传感器和致动器的无铅压电陶瓷组合物含有Li_2CO_3摩尔/ x Na（Nb_0.8 Ta_0.2）O_3-y K（Nb_0.8 Ta_0.2）O_3-z Li（Nb_0.8 Ta_0 .2）O_3粉。 x为0.47-0.53，y为0.44-0.52，z为0.01-0.03，x，y和z之和为1，a为0.005-0.02。
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公开(公告)号：KR100884719B1
公开(公告)日：2009-02-19
申请号：KR1020070068090
申请日：2007-07-06
Applicant: 한국전기연구원
IPC: H01L41/16 , H01L41/187
Abstract: 본 발명은 압전 변위 제어용으로 압전 액츄에이터에 사용될 수 있는 높은 전기기계결합계수 및 압전상수와 낮은 소결온도를 갖으며, 특히 납이 함유되지 않은 압전 액츄에이터용 압전 자기 조성물을 제공하고자 하는 것으로서, 그 압전 자기 조성물은 안정한 페로브스카이트 ABO
3 구조를 갖는 (Na
x K
y Li
z )NbO
3 + a mol% Li
2 CO
3
이며, 0.44-
Patent Agency Ranking
公开(公告)号：KR100784928B1
公开(公告)日：2007-12-11
申请号：KR1020060082700
申请日：2006-08-30
Applicant: 한국전기연구원
IPC: H01B3/10
Abstract: A thick film dielectric composition for a RF tuneable device is provided to realize a low dielectric loss, high k-factor, high tuning ratio and excellent dielectric characteristics while permitting low-temperature sintering. A thick dielectric composition for a RF tuneable device is obtained by heat treating and sintering a dielectric ceramic composition comprising 100 parts by weight of (BaYSr1-Y)TiO3 and X parts by weight of Li2CO3, and represented by the formula of (BaYSr1-Y)TiO3 + X Li2CO3 (wherein 1
Abstract translation: 提供用于RF可调谐器件的厚膜电介质组合物，以实现低介电损耗，高k因子，高调谐率和优异的介电特性，同时允许低温烧结。 通过热处理和烧结包含100重量份的（BaSr1-Y）TiO 3和X重量份的Li 2 CO 3的电介质陶瓷组合物，并由式（BaYSr1-Y ）TiO 3 + X Li 2 CO 3（其中1 <= x <= 20和0.01 <= Y <= 0.99），在1000-1350℃。 在组成中，通过混合BaCO 3，SrCO 3和TiO 3粉末作为起始材料形成（BaYSr1-Y）TiO3。
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公开(公告)号：KR101012143B1
公开(公告)日：2011-02-07
申请号：KR1020080108951
申请日：2008-11-04
Applicant: 한국전기연구원
IPC: C04B35/495 , C04B35/19
Abstract: 본 발명은 납이 함유되지 않은 비납계 압전 세라믹 조성물과 그의 제조방법에 관한 것으로서, 보다 상세하게는 센서 및 액추에이터에 적용될 수 있는 우수한 전기기계결합계수 및 압전특성을 지닌 납이 함유되지 않은 압전 세라믹 조성물 및 그 제조방법에 관한 것이다.
본 발명의 압전 센서 및 액추에이터용 비납계 압전 세라믹 조성물은 x Na(Nb
0.8 Ta
0.2 )O
3 - y K(Nb
0.8 Ta
0.2 )O
3 - z Li(Nb
0.8 Ta
0.2 )O
3 의 분말 1mol 대비 a mol의 비율로 Li
2 CO
3 가 첨가된 조성을 갖되, 상기 x는 0.47 이상 0.53 이하이고, y는 0.98-x이고, z는 0.02이며, a는 0.01이다. 보다 바람직하게는 상기 x는 0.51이다.
비납계, 압전, 세라믹조성물, 하소, 재하소, 소결,-
公开(公告)号：KR100977420B1
公开(公告)日：2010-08-24
申请号：KR1020080108969
申请日：2008-11-04
Applicant: 한국전기연구원
IPC: C04B35/491 , C04B35/493
Abstract: 본 발명은 압전 자기 조성물에 관한 것으로서, 압전변위제어용으로 적층형 압전 액츄에이터에 사용될 수 있는 높은 전기기계결합계수(k
p )와 압전상수(d
33 )를 갖는 압전 자기 조성물에 관한 것이다.
본 발명의 조성물은 안정한 ABO
3 구조를 갖는 0.4Pb(Mg
1/3 Nb
2/3 )O
3 -0.25PbZrO
3 -0.35PbTiO
3 의 100중량부 대비, 0.05 중량부의 Li
2 CO
3 , 0.01 중량부의 Bi
2 O
3 , 1 중량부의 PbO 및 d중량부의 CuO가 첨가된 압전 자기 조성물로서, 상기 d는 0 초과 0.5이하의 범위이며, 보다 바람직하게는 상기 d는 0.3이다.
CuO를 첨가함에 따라 전기기계결합계수(k
p ) 및 압전상수(d
33 )가 증가하는 한편 소결온도는 950 ℃로 낮출수 있었으며, 따라서 보다 값싼 은 전극을 사용할 수 있는 적층형 압전액츄에이터에 응용될 수 있는 압전 자기 조성물 및 그 제조방법을 제공한다.
압전세라믹스, 액츄에이터, 압전변위소자, 적층세라믹스, 저온소성-
公开(公告)号：KR1020100049928A
公开(公告)日：2010-05-13
申请号：KR1020080108969
申请日：2008-11-04
Applicant: 한국전기연구원
IPC: C04B35/491 , C04B35/493
CPC classification number: H01L41/1875 , C04B35/48 , C04B2235/3234 , C04B2235/3248 , C04B2235/3281 , C04B2235/3296 , C04B2235/3298 , C04B2235/442 , C04B2235/768 , C04B2235/96
Abstract: PURPOSE: A piezoelectric composition is provided to use in a multilayer piezoelectric actuator for controlling piezoelelctric strain and to lower sintering temperature by 950 °C. CONSTITUTION: A piezoelectric composition is a composition in which Li2CO3, Bi2O3, PbO and CuO are added to xPb(Mg_1/3 Nb_2/3)O3-yPbZrO_3-zPbTiO_3. X is 0.35-0.45, and y is 0.2-0.3, z is 1-x-y. The addition amount of Li_2CO_3, Bi_2O_3 and PbO is a weight parts, b weight parts, and c weight parts.
Abstract translation: 目的：提供一种压电组合物，用于多层压电致动器，用于控制压电应变和将烧结温度降低950℃。 构成：压电组合物是其中将Li 2 CO 3，Bi 2 O 3，PbO和CuO加入到xPb（Mg_1 / 3Nb_2 / 3）O3-yPbZrO_3-zPbTiO_3中的组合物。 X为0.35-0.45，y为0.2-0.3，z为1-x-y。 Li_2CO_3，Bi_2O_3和PbO的添加量是重量份，b重量份和c重量份。
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公开(公告)号：KR100875479B1
公开(公告)日：2008-12-22
申请号：KR1020070056769
申请日：2007-06-11
Applicant: 한국전기연구원
IPC: H01L41/187 , H01L41/16
Abstract: A composition and a manufacturing method of lead-free piezoelectric ceramics are provided to improve the piezoelectricity characteristic by adding Li2CO3 and Na2CO3 to the ceramic composition. The manufacturing method of the lead-free piezoelectric ceramic composition comprises the following steps: the step that mixes and pulverizes the sample of the Na2CO3, K2CO3, Li2CO3, Nb2O5, and Ta2O5 and dries and burns; the step that re-burns the burned sample; the step for remixing, re-pulverizing the sample; the step for sintering and molding the dried sample. Li2CO3 and Na2CO3 are added to the ceramic composition of (NaxK0.95-xLi0.05)(Nb0.95Ta0.05)O3.
Abstract translation: 提供无铅压电陶瓷的组成和制造方法，以通过向陶瓷组合物中加入Li 2 CO 3和Na 2 CO 3来改善压电特性。 无铅压电陶瓷组合物的制备方法包括以下步骤：将Na 2 CO 3，K 2 CO 3，Li 2 CO 3，Nb 2 O 5和Ta 2 O 5的样品混合并粉碎并干燥和灼烧; 重烧烧伤样本的步骤; 重新混合，重新粉碎样品的步骤; 烧结和模制干燥样品的步骤。 （Na x K 0.95-x Li 0.05）（Nb 0.95 Ta 0.05）O 3的陶瓷组合物中添加Li 2 CO 3和Na 2 CO 3。
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