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公开(公告)号：KR100663972B1
公开(公告)日：2007-01-02
申请号：KR1020050078358
申请日：2005-08-25
Applicant: 한국교통대학교산학협력단 , 고려전자주식회사
IPC: C04B35/491 , C04B35/493
Abstract: PMN-PZT piezoelectric ceramics with constant content of Al2O3 are provided to enhance synthesis rate of perovskite phase and post-sintering density of the ceramics, which are useful for manufacturing hard piezoelectric vibrator with high coercive field and Curie temperature but reduced dielectric loss by comprising PbO, MnO2, Nb2O5 and ZrO2 and adding Al2O3 in desired content to the ceramics. The piezoelectric ceramics are formed by the steps of: preparing each of PbO, MnO2, Nb2O5 and ZrO5 powders, and Al2O3 additive as starting materials; adding 2.0wt.% of excess PbO in consideration of evaporation of PbO during hot sintering process; ball-milling the starting materials then drying the milled material; calcining the dried material to synthesize precursor; crushing and ball-milling the calcined material; adding a binder to the powder and forming granules by a spray dryer; sizing the powder and press molding the powder; and sintering the molded material.
Abstract translation: 提供具有恒定含量的Al2O3的PMN-PZT压电陶瓷，以提高陶瓷的钙钛矿相和后烧结密度的合成速率，这对于制造具有高矫顽磁场和居里温度的硬压电振动器而言是有用的，但通过包括PbO ，MnO 2，Nb 2 O 5和ZrO 2，并将Al 2 O 3添加到陶瓷中。 通过以下步骤形成压电陶瓷：制备PbO，MnO 2，Nb 2 O 5和ZrO 5粉末和Al 2 O 3添加剂作为起始材料; 考虑到热烧结过程中PbO的蒸发，添加2.0wt％的过量PbO; 对起始材料进行球磨，然后干燥研磨材料; 煅烧干燥物料合成前体; 破碎和球磨煅烧材料; 向粉末中加入粘合剂并通过喷雾干燥器形成颗粒; 粉末粉末定型，压粉成型; 并烧结成型材料。
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公开(公告)号：KR100663971B1
公开(公告)日：2007-01-02
申请号：KR1020050078357
申请日：2005-08-25
Applicant: 한국교통대학교산학협력단 , 고려전자주식회사
IPC: C04B35/491 , C04B35/493
Abstract: PNN-PZT piezoelectric ceramics with constant content of NiO are provided to have dielectric and piezoelectric properties such as piezoelectric charge constant and are preferably used for accelerometer sensors by comprising PbO, TiO2, NiNb2O6 and ZrO2 and adding NiO in desired content to the ceramics. The piezoelectric ceramics are formed by steps of: preparing each of PbO, ZrO2, TiO2 and NiNb2O6 powders as starting materials; calcining the starting materials, NiO and Nb2O5; milling all of the starting materials then drying the milled powders; sizing and calcining the dried powders; adding additives to the powders after crushing the calcined powders; and milling the mixture. The obtained ceramics contain NiO in solid solution form and has perovskite crystalline structure and composition of 0.5Pb(Zr0.52Ti0.48)O30.5Pb(Ni1/3Nb2/3)O3-y[mol%]NiO-1[wt%]PbO wherein y is 1.0.
Abstract translation: 提供具有恒定含量的NiO的PNN-PZT压电陶瓷以具有诸如压电电荷常数的电介质和压电性能，并且优选用于通过包括PbO，TiO 2，NiNb 2 O 6和ZrO 2并将所需内容物中的NiO添加到陶瓷中的加速度计传感器。 压电陶瓷由以下步骤形成：以PbO，ZrO2，TiO2和NiNb2O6粉末为原料， 焙烧原料NiO和Nb2O5; 研磨所有起始材料，然后干燥研磨的粉末; 上浆和煅烧干粉; 在粉碎煅烧粉末后，向粉末中添加添加剂; 并研磨混合物。 得到的陶瓷含有固溶体形式的NiO，具有钙钛矿晶体结构，组成为0.5Pb（Zr0.52Ti0.48）O30.5Pb（Ni1 / 3Nb2 / 3）O3-y [mol％] NiO-1 [wt％] 其中y为1.0。
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公开(公告)号：KR1020060082913A
公开(公告)日：2006-07-20
申请号：KR1020050003278
申请日：2005-01-13
Applicant: 한국교통대학교산학협력단 , 고려전자주식회사
IPC: C04B35/493 , C04B35/491
Abstract: 0.05Pb(Mn
1/3 Sb
2/3 )O
3 -0.95Pb(Zr,Ti)O
3 -x(mol%)ZnO-1(wt%)PbO (0≤x≤5)의 조성을 가지는 압전 특성이 우수한 PMS-PZT 세라믹이 제공된다. 그 제조 방법은 아래와 같은 단계로 이루어진다. 0.05Pb(Mn
1/3 Sb
2/3 )O
3 -0.95Pb(Zr,Ti)O
3 -x(mol%)ZnO-1(wt%)PbO (0≤x≤5)의 조성이 되도록 PbO, ZrO
2 , TiO
2 , MnO
2 , Sb
2 O
3 및 ZnO의 원료분말을 준비하는 단계; 상기 원료분말로부터 건조 분말을 형성시키는 단계; 상기 건조 분말을 분급한 후 하소하는 단계; 상기 하소된 분말에 첨가제 및 결합제를 공급한 뒤 건조시키는 단계; 상기 건조된 분말을 가압 성형하여 성형체를 만드는 단계; 및 상기 성형체를 그와 동일한 조성의 분위기 내에서 소결하는 단계.
PMS-PZT, 압전 세라믹-
公开(公告)号：KR1020060022949A
公开(公告)日：2006-03-13
申请号：KR1020040071751
申请日：2004-09-08
Applicant: 한국교통대학교산학협력단 , 고려전자주식회사
IPC: C04B35/493 , C04B35/491 , H01L41/187
Abstract: 본 발명은 PMN-PZT계 압전 세라믹스 및 그 제조방법에 관한 것으로, PMN-PZT계 압전 세라믹스를 조성식 0.5Pb(Mg
⅓ Nb
⅔ )O
3 -0.5Pb(Zr,Ti)O
3 -x[wt%]Mn0₂-1[wt%]PbO (몰비 0
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