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公开(公告)号：KR1020090106859A
公开(公告)日：2009-10-12
申请号：KR1020080032250
申请日：2008-04-07
Applicant: 한국교통대학교산학협력단
IPC: C04B35/00 , H01L41/187
CPC classification number: H01L41/1878 , C04B35/468 , C04B35/475 , C04B35/62615 , C04B35/62645 , C04B35/63 , C04B35/64 , C04B2235/604
Abstract: PURPOSE: BNBT piezoelectric ceramics and a method for manufacturing the same are provided to improve dielectric constant, electromechanical coupling coefficient, sintering density, mechanical quality factor, and ferroelectric stability by adding CaO and MnO to BNBT piezoelectric ceramics. CONSTITUTION: BNBT piezoelectric ceramics have a perovskite structure. The BNBT piezoelectric ceramics are made by adding CaO and MnO to (Bi0.5Na0.5) 0.94Ba0.06TiO3. The contents of the CaO and MnO are x wt% and y wt% and the x and y satisfy the inequality of 0
Abstract translation: 目的：提供BNBT压电陶瓷及其制造方法，通过向BNBT压电陶瓷添加CaO和MnO来提高介电常数，机电耦合系数，烧结密度，机械品质因数和铁电稳定性。 构成：BNBT压电陶瓷具有钙钛矿结构。 BNBT压电陶瓷是通过向（Bi0.5Na0.5）0.94Ba0.06TiO3添加CaO和MnO制成的。 CaO和MnO的含量为x重量％，y重量％，x和y满足0
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公开(公告)号：KR1020090090522A
公开(公告)日：2009-08-26
申请号：KR1020080015784
申请日：2008-02-21
Applicant: 한국교통대학교산학협력단
CPC classification number: Y02E60/327 , C01B3/0031 , C01B6/04 , C01F17/0043 , C22C23/06
Abstract: A magnesium-based hydrogen storage material and a manufacturing method thereof are provided to improve hydrogenation property by reducing activation energy and adding scandium oxide in magnesium hydride. A magnesium-based hydrogen storage material includes magnesium hydride and scandium oxide 5wt% ~ 10wt% added to the magnesium hydride. A manufacturing method of the magnesium-based hydrogen storage material includes the following steps of: manufacturing magnesium ingot to a powder state; manufacturing magnesium hydride by alloying the magnesium in a hydrogen atmosphere mechanically; and alloying the magnesium hydride with scandium oxide.
Abstract translation: 提供镁基储氢材料及其制造方法，通过降低活化能并在氢化镁中加入氧化钪来提高氢化性能。 镁基储氢材料包括加入氢化镁中的氢化镁和5重量％〜10重量％的氧化钪。 镁基储氢材料的制造方法包括以下步骤：将镁锭制造成粉末状态; 通过机械地在氢气氛中合成镁来制造氢化镁; 并将氢化镁与氧化钪合金化。
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公开(公告)号：KR100910158B1
公开(公告)日：2009-07-30
申请号：KR1020070091779
申请日：2007-09-10
Applicant: 한국교통대학교산학협력단
IPC: H01L35/14
Abstract: 본 발명은 열전특성이 우수한 스커테루다이트계 열전재료 및 그 제조방법에 관한 것으로, 더욱 자세하게는 CoSb
3 스커테루다이트의 공극에 Sn을 충진시키고 Te를 Sb와 치환시킨 Sn
z Co
4 Sb
12-y Te
y 스커테루다이트계 열전재료와, 밀폐유도용해법과 열처리를 이용하여 Sn을 충진하고 Te를 도핑하는 그 제조방법에 관한 것이다.
이를 위해 본 발명은, CoSb
3 을 이용한 스커테루다이트계 열전재료에 있어서, 단위격자 내의 공극이 Sn으로 충진되고 Te가 도핑되어 Sn
z Co
4 Sb
12
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y Te
y 의 조성을 가지며, 상기 z와 y가 0＜z≤0.25 및 0＜y≤0.375 범위에 있는 것을 특징으로 한다.
또 본 발명에 의한 스커테루다이트계 열전재료 제조방법은, Sn
z Co
4 Sb
12
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y Te
y 의 조성을 가지는 스커테루다이트 열전재료의 제조방법에 있어서, 원료물질인 Co, Sb, Sn 및 Te를 석영관에 장입한 후 진공 하에서 밀폐하는 단계, 상기 장입된 원료물질의 혼합물을 고주파 유도 전력에 의해 밀폐유도용해로에서 가열 용해하는 단계, 상기 용해된 재료를 제2상의 형성을 방지하기 위하여 물속에서 급랭하는 단계, 상기 재료를 Sn의 공극 충진과 Te의 활성화를 위하여 진공 열처리하는 단계를 포함한다.
열전재료, 열전소재, 고효율 열전재료, 스커테루다이트, Sn충진, Te도핑-
公开(公告)号：KR1020090026666A
公开(公告)日：2009-03-13
申请号：KR1020070091777
申请日：2007-09-10
Applicant: 한국교통대학교산학협력단
CPC classification number: C22C12/00 , C22C1/02 , C22C2200/00
Abstract: A thermal conduction material for the middle temperature and a manufacturing method thereof is provided to obtain a skuteerudite thermoelectric material with a superior thermoelectric property for the middle temperature. A manufacturing method of a thermal conduction material for the middle temperature comprises a step of tightly shutting raw materials whish are Co, Sn, and Sb after charging into a Quartz tube under vacuum; a step of heating and melting the charged raw material mixture in seal induction melting furnace with high frequency induction electricity; and a step of heat treating the material solidifying after melting in order to be homogenization and to fill an air gap with the Sn.
Abstract translation: 提供了一种用于中温的导热材料及其制造方法，以获得具有中等温度的优异的热电性能的碲化物热电材料。 用于中温的导热材料的制造方法包括在真空下装入石英管之后，紧紧关闭Co，Sn和Sb的原料的步骤; 在具有高频感应电的密封感应熔炼炉中加热熔化带电的原料混合物的步骤; 以及熔融后固化的材料进行热处理以均匀化并与Sn填充气隙的步骤。
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公开(公告)号：KR100728178B1
公开(公告)日：2007-06-13
申请号：KR1020060006114
申请日：2006-01-20
Applicant: 한국교통대학교산학협력단
IPC: H01L35/14
Abstract: A method for producing Ba8Al16Si30 clathrate thermoelectric material is provided to improve thermoelectric properties comprising seeback coefficient or factor and electric conductivity by properly selecting annealing conditions. Ba element, Al element, and Si element are prepared as start material, and the start materials are blended to make a compound. The compound is arc-molten to produce Ba8Al16Si30. For homogenization of a phase and phase change, the molten material is annealed at the temperature of 700 deg.C. The annealing process is carried out during 5 hours.
Abstract translation: 提供一种制备Ba8Al16Si30包合物热电材料的方法，以通过适当选择退火条件来改善包括返回系数或因子和电导率的热电性质。 准备Ba元素，Al元素和Si元素作为起始材料，并将起始材料混合以制成化合物。 该化合物被电弧熔融以生产Ba8Al16Si30。 为了均匀化相和相变，将熔融材料在700℃的温度下退火。 退火过程在5小时内进行。
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Patent Agency Ranking
公开(公告)号：KR100667256B1
公开(公告)日：2007-01-10
申请号：KR1020050094113
申请日：2005-10-07
Applicant: 한국교통대학교산학협력단
IPC: C04B35/493 , C04B35/491
CPC classification number: H01L41/1876 , C04B35/472 , C04B35/62615 , C04B35/62645 , C04B35/638 , C04B35/645 , C04B2235/3296
Abstract: High efficiency PSN-PMN-PZT piezoelectric ceramics useful for piezoelectric transformer are provided to be proper for driving strong electric-field and applied in the piezoelectric transformer by adopting Pb(Sb0.5Nb0.5)O3-PbZrO3-PbTiO3 three components system and Pb(Mn1/3Nb2/3)O3-PbZrO3-PbTiO3 three components system. The PZN-PMN-PZT piezoelectric ceramics are formed by the steps of: preparing each of PbO, ZrO2, TiO2, Nb2O5, MnCO3 and Sb2O3 powder provided that Zr/Ti ratio is 0.475/0.465; milling all of the powder by using zirconia ball and distilled water for 24 hours; drying and sizing the milled powder to particle size of less than 100mesh; calcining the sized powder at 1123K for 2 hours; grinding the calcined powder; heating and completely drying the powder under stirring, then sizing the dried powder; press molding the ground powder; and removing binder fraction from the powder through heat-sintering after molding.
Abstract translation: 提供了用于压电变压器的高效PSN-PMN-PZT压电陶瓷，适用于驱动强电场，并采用Pb（Sb0.5Nb0.5）O3-PbZrO3-PbTiO3三组分体系和Pb （Mn1 / 3Nb2 / 3）O3-PbZrO3-PbTiO3三组分体系。 PZN-PMN-PZT压电陶瓷通过以下步骤形成：如果Zr / Ti比为0.475 / 0.465，则制备PbO，ZrO2，TiO2，Nb2O5，MnCO3和Sb2O3粉末; 用氧化锆球和蒸馏水粉碎所有的粉末24小时; 将研磨的粉末干燥并定型至小于100目的粒度; 在1123K下煅烧尺寸的粉末2小时; 研磨煅烧粉末; 在搅拌下加热并完全干燥粉末，然后对干燥粉末进行定型; 压成型粉末; 并在成型后通过热烧结从粉末中除去粘合剂部分。
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公开(公告)号：KR100645596B1
公开(公告)日：2006-11-14
申请号：KR1020050078359
申请日：2005-08-25
Applicant: 한국교통대학교산학협력단
Abstract: A skutterudite CoSb3 thermoelectric material producing method is provided to improve the thermoelectric characteristic like a seebeck coefficient, electric conductivity, and thermoelectric power factor by producing skutterudite CoSb3 by an arc melting method and changing a microstructure by annealing the skutterudite CoSb3 under an optimal condition. The skutterudite CoSb3 thermoelectric material producing method comprises the steps of: arc-melting Co(Cobalt) and Sb(Stibium) elements under the atmosphere of Ar(Argon); executing re-melting more than one time to prevent the homogenization and segregation of a composition; and annealing the CoSb3 produced by an arc melting method. The CoSb3 is annealed at 300-500 deg.C. The CoSb3 has a microstructure without pores or cracks and good thermoelectric characteristic if the CoSb3 is annealed at 400 deg.C for 24 hours.
Abstract translation: 本发明提供一种方钴矿CoSb 3热电材料制造方法，通过电弧熔炼法制造方钴矿CoSb 3，并通过在最佳条件下对方钴矿CoSb 3进行退火来改变微结构，从而改善塞贝克系数，电导率和热电功率因数等热电特性。 该方钴矿CoSb 3热电材料的生产方法包括以下步骤：在Ar（氩）气氛下电弧熔炼Co（钴）和Sb（锑）元素; 重复熔融一次以上以防止组合物的均化和分离; 并对通过电弧熔融法制造的CoSb 3进行退火。 CoSb3在300-500℃退火。 如果CoSb3在400℃下退火24小时，CoSb3具有没有孔隙或裂纹的微结构和良好的热电特性。
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公开(公告)号：KR1020210008962A
公开(公告)日：2021-01-26
申请号：KR1020190084911
申请日：2019-07-15
Applicant: 한국교통대학교산학협력단
Inventor： 어순철 , 어순철 , 에이.케이.엠.아쉬쿠즈만샤원
Abstract: 본발명에따르면, 합금분말을일반적인진공로를사용한소결공정을통해단상의벌크 AlSb를합성할수 있다. 또한, 본발명에따르면, 전기전도도가개선된안티몬리치(Sb-rich) 상을갖는시편을통해열전특성을측정함으로써도핑또는복합재료화등 추가적인합금화를통해열전재료로의활용가능성을제시한다. 또한, 본발명에따르면, 고에너지진동밀(HVEM)에의해분쇄된합금분말을진공핫프레스에의해소결시킴으로써단상의벌크 AlSb의기계적특성을확인할수 있을수준까지경도를개선함으로써다른응용예로의확장가능성을제시한다.
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公开(公告)号：KR1020150028611A
公开(公告)日：2015-03-16
申请号：KR1020130107461
申请日：2013-09-06
Applicant: 한국교통대학교산학협력단
Abstract: 본발명은리튬이온을과량으로첨가하여전기적특성을향상시킬수 있는리튬이차전지캐소드용 LiFePO/C 복합재제조방법에관한것이다. 본발명에따른리튬이차전지캐소드용 LiFePO/C 복합재제조방법은, Fe 전구체, 리튬소스및 탄소소스를혼합하는단계; 및상기 FePO, 리튬소스및 카본소스가혼합된혼합물을볼 밀하여 LiFePO/C(x=0.008 내지 0.012)를합성하는단계;를포함하는것을특징으로한다.
Abstract translation: 本发明涉及一种锂二次电池用阴极制造LiFePO_4 / C的方法，所述锂二次电池的阴极可以通过添加少量的锂离子来改善电性能。 本发明的锂二次电池用阴极的LiFePO_4 / C的制造方法包括以下步骤：将Fe前体，锂源和碳源混合; 并通过球磨FePO4，锂源和碳源的混合物来合成Li_1 + xFePO_4 / C（x = 0.008至0.012）。
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公开(公告)号：KR1020130047236A
公开(公告)日：2013-05-08
申请号：KR1020110112137
申请日：2011-10-31
Applicant: 한국교통대학교산학협력단
IPC: C22C1/04
CPC classification number: C22C1/0491 , C22C2202/00
Abstract: PURPOSE: An Sb-doped ZrNiSn half-Heusler alloy and a manufacturing method thereof are provided to manufacture the alloy with high efficiency using a mechanical alloying process with a solid phase change and a vacuum hot press process. CONSTITUTION: An Sb-doped ZrNiSn half-Heusler alloy and a manufacturing method thereof include: a step of manufacturing mixed powder with mixing Zr powder, Ni powder, and Sb powder which are raw materials; a step of implementing a mechanical alloying process on the mixed powder; a step of implementing a vacuum hot press process on the mixed powder; and a step of obtaining a thermoelectric material of which the composition is ZrNiSn1-xSbx(0
Abstract translation: 目的：提供Sb掺杂的ZrNiSn半合金Heeller合金及其制造方法，以使用具有固相和真空热压工艺的机械合金化工艺高效制造合金。 构成：Sb掺杂的ZrNiSn半合金Heeller合金及其制造方法包括：以混合Zr粉末，Ni粉末和Sb粉末为原料制造混合粉末的步骤; 在混合粉末上实施机械合金化工艺的步骤; 在混合粉末上实施真空热压工艺的步骤; 以及获得组成为ZrNiSn1-xSbx（0
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