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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-
公开(公告)号：KR101682381B1
公开(公告)日：2016-12-05
申请号：KR1020150036077
申请日：2015-03-16
Applicant: 한국교통대학교산학협력단
IPC: C01B25/45 , C01B31/02 , H01M10/0525
Abstract: 본발명은전기화학적특성이뛰어난탄소코팅리튬인산철의제조방법으로서, 염화철이용하여인산철수화물분말을제조하는단계; 상기인산철수화물분말과리튬소스물질을혼합하여고상법으로전구체를제조하는단계; 상기전구체에탄소소스물질을첨가하여고에너지나노밀링하는단계; 및상기고에너지나노밀링하는단계에서얻어진수득물을건조및 소성하는단계를포함한다. 따라서본 발명에따른탄소코팅리튬인산철의제조방법은짧은공정시간, 비용절감및 전기적특성이향상된친환경적인탄소코팅리튬인산철을제공하는효과가있다.
Abstract translation: 本发明涉及具有优异的电化学性能的涂覆有碳酸锂的磷酸锂金属的制造方法。 该方法包括以下步骤：使用氯化铁生产磷酸铁水合物粉末; 通过混合磷酸铁水合物粉末和锂源材料，使用固相法制备前体; 通过在前体中添加碳源材料进行高能纳米 - 并干燥和煅烧在高能纳米级步骤中获得的产物。 涂覆有碳酸锂的磷酸锂的制备方法提供了环氧锂金属磷酸盐，涂覆了碳，工艺时间短，成本降低，电性能改善。
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Patent Agency Ranking
公开(公告)号：KR101454341B1
公开(公告)日：2014-10-27
申请号：KR1020130121715
申请日：2013-10-14
Applicant: 한국교통대학교산학협력단
IPC: H01L41/187
CPC classification number: H01L41/1876 , H01L41/43
Abstract: Disclosed are a piezoelectric ceramic capable of increasing a g33 value by maintaining a low-K (dielectric constant), and having a high d33 value without reducing a phase transition temperature (Tc) by adding BiYO_3 having a low-K to Pb(Zr_0.53Ti_0.47)O_3 and a method of fabricating the same. According to the present invention, the piezoelectric ceramic is expressed by the following chemical formula 1. [Chemical formula 1] (1-x) (Zr_0.53Ti_0.47)O_3 -x BiYO_3 (here, 0
Abstract translation: 公开了通过将具有低K的BiYO 3添加到Pb（Zr_0）中，能够通过保持低K（介电常数）来增加g33值并且具有高d33值而不降低相变温度（Tc）的压电陶瓷。 53Ti_0.47）O_3及其制造方法。 根据本发明，压电陶瓷由以下化学式1表示。[化学式1]（1-x）（Zr_0.53Ti_0.47）O_3-x BiYO_3（这里，0
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7.发明公开pH 조절을 이용한 FePO₄제조 방법 및 이를 이용한 리튬이차전지 양극용 LiFePO₄/C 복합재 제조 방법 有权使用PH控制制造磷酸铁的方法和制造碳酸锂的磷酸铁锂作为锂二次电池的阴极的方法
公开(公告)号：KR1020140021791A
公开(公告)日：2014-02-20
申请号：KR1020120087917
申请日：2012-08-10
Applicant: 한국교통대학교산학협력단
IPC: C01G49/00 , C01B25/37 , H01M10/052
CPC classification number: C01B25/375 , H01M4/362 , H01M4/38 , H01M4/5825 , H01M10/052
Abstract: Disclosed are a production method of FePO4 using pH control, and a production method of LiFePO4/C for a positive electrode of a lithium secondary battery. The production method of FePO4 by the present invention comprises the following steps: (a) a step for adding a tervalent iron containing material into a phosphate containing solution; (b) a step for precipitating FePO4 by adjusting the pH of the solution from the (a) step; (c) a step for filtering the precipitated FePO4; and (d) a step for drying the filtered FePO4. [Reference numerals] (AA) Start; (BB) End; (S110) Add FeCL_3 in H_3PO_4 solution; (S120) FePO_4 precipitation through adding NH_4OH; (S130) Washing/filtering; (S140) Drying; (S150) Heat treatment
Abstract translation: 公开了使用pH控制的FePO 4的制造方法和锂二次电池的正极的LiFePO 4 / C的制造方法。 本发明的FePO 4的制造方法包括以下步骤：（a）将含有三价含铁材料添加到含磷酸盐溶液中的工序; （b）通过调节来自（a）步骤的溶液的pH来沉淀FePO 4的步骤; （c）过滤沉淀的FePO 4的步骤; 和（d）用于干燥过滤的FePO 4的步骤。 （附图标记）（AA）开始; （BB）结束; （S110）在H_3PO_4溶液中加入FeCl_3; （S120）通过添加NH_4OH沉淀FePO_4; （S130）洗涤/过滤; （S140）干燥; （S150）热处理
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公开(公告)号：KR1020090066018A
公开(公告)日：2009-06-23
申请号：KR1020070133602
申请日：2007-12-18
Applicant: 한국교통대학교산학협력단
Abstract: A polyol, and a polyurethane resin for an adhesive using the polyol are provided to improve biodegradability and to lower a manufacturing cost by using a natural material. A polyol is prepared from an oil selected from the group consisting of an edible oil, a vegetable oil and the waste edible oil. The polyol is represented by the formula 1, wherein R is a hydrogen atom or (CH2)n-OH; and n is an integer of 1 ~ 10.
Abstract translation: 提供多元醇和用于使用多元醇的粘合剂的聚氨酯树脂以提高生物降解性并通过使用天然材料降低制造成本。 多元醇由选自食用油，植物油和废弃食用油的油制备。 多元醇由式1表示，其中R是氢原子或（CH 2）n -OH; n为1〜10的整数。
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公开(公告)号：KR1020090013434A
公开(公告)日：2009-02-05
申请号：KR1020070077539
申请日：2007-08-01
Applicant: 한국교통대학교산학협력단
Abstract: A gas measurement device is provided to maximize a light traveling distance in a minimum space by using a plurality of reflecting mirrors so as to improve the sensitivity of a sensor for a small variation in the quantity of gas. A gas measurement device(100) includes a light source emitting light, a detector(40) detecting the light emitted from the light source, a filter(41) included in the detector to pass only a wavelength region of gas, which is to be measured, and a guide(60) for guiding the light emitted from the light source to the detector to increase the traveling distance of the light. The guide includes a plurality of bent guide channels(20) and a plurality of reflecting mirrors(30) placed at bent portions of the guide channels.
Abstract translation: 提供一种气体测量装置，通过使用多个反射镜使最小空间中的光行进距离最大化，从而提高传感器对于气体量变化小的灵敏度。 气体测量装置（100）包括发光的光源，检测从光源发射的光的检测器（40），检测器中包含的仅通过气体的波长区域的滤光器（41） 以及用于将从光源发射的光引导到检测器的引导件（60），以增加光的行进距离。 引导件包括多个弯曲的引导通道（20）和放置在引导通道的弯曲部分处的多个反射镜（30）。
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公开(公告)号：KR100783734B1
公开(公告)日：2007-12-11
申请号：KR1020060058386
申请日：2006-06-28
Applicant: 한국교통대학교산학협력단
CPC classification number: C22C1/02 , C22C19/07 , C22C2202/00
Abstract: A method for manufacturing Skutterudite by encapsulated induction melting is provided to minimize deformation of composition caused by a volatilization of components by performing a synthetic process on an encapsulated induction melting furnace. A method for manufacturing Skutterudite by encapsulated induction melting includes the steps of preparing raw material such as short type Co and Sb for composing CoSb6, charging the raw material into an encapsulated induction melting furnace, manufacturing the CoSb6 by melting the raw material in a vacuum atmosphere, and performing a thermal treatment for the solved CoSb6 in the vacuum for inducing homogenization and phase change.
Abstract translation: 提供了通过包封感应熔化制造方钴矿的方法，以通过在包封的感应熔化炉上进行合成方法来最小化由组分挥发引起的组合物的变形。 通过包封感应熔化制造方钴矿的方法包括制备用于构成CoSb6的短型Co和Sb等原料的步骤，将原料装入包封的感应熔炼炉中，通过在真空气氛中熔化原料制造CoSb6 并且在真空中对溶解的CoSb6进行热处理以诱导均匀化和相变。
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