公开(公告)号：KR100632393B1

公开(公告)日：2006-10-12

申请号：KR1020040017149

申请日：2004-03-13

Applicant: 한국과학기술연구원

Inventor： 박재환 ,  박재관 ,  신동순 ,  김윤호

IPC: C04B35/468

Abstract: 본 발명은 875
o C 이하의 온도에서 소성이 가능한 유전체 세라믹 조성물에 관한 것으로서 특히, 유전율이 200~1000 범위에 있고, 유전손실값이 3% 미만인 것을 특징으로 한다. 조성물의 구성은 5~20 wt%의 Li
2 OB
2 O
3 -SiO
2 계 유리 프리트와 80~95 wt%의 BaO-TiO
2 계 유전체 세라믹스의 조합으로 구성된다. 본 발명을 통해 개발된 조성물은, 내장 캐패시터 형태로서 세라믹 다층 패키징의 일부를 구성하는데 효과적으로 적용될 수 있다.
고유전율, 저온소성, 유전체, 유리프리트, LTCC

公开(公告)号：KR1020050010601A

公开(公告)日：2005-01-28

申请号：KR1020030049836

申请日：2003-07-21

Applicant: 한국과학기술연구원

Inventor： 박재환 ,  최헌진 ,  박재관

IPC: B82B3/00 ,  B82Y40/00

CPC classification number: C01G9/03 ,  B01J6/00 ,  B01J2219/00063 ,  B01J2219/00135 ,  B01J2219/00186 ,  B01J2219/182 ,  B01J2219/1923 ,  B01J2219/1943 ,  B82Y30/00 ,  C01P2004/64 ,  C23C14/0021 ,  C23C14/086 ,  C23C14/228 ,  C23C14/243 ,  Y10S977/755 ,  Y10S977/762 ,  Y10S977/811 ,  Y10S977/84 ,  Y10S977/855

Abstract: PURPOSE: A method and an apparatus are provided to produce various nano structures of zinc oxide reproducibly by controlling the inside temperature of a reaction tube and the blend ratio of carrier gas. The nano structures are aligned and assembled easily. CONSTITUTION: The nano structures of zinc oxide are produced by reduction-reacting zinc oxide powder and graphite in the presence of the carrier gas containing 1-20vol% of oxygen to argon at a temperature of 800-950deg.C to produce zinc gas and then depositing the zinc gas on a silicone substrate and growing. And the apparatus for producing the nano structures contains: a heater(10) keeping the inside temperature of the reaction tube(20) 800-950deg.C to heat the substrate and the raw material powder; the reaction tube(20) having a carrier gas inlet hole(21) and a carrier gas outlet hole(22), which passes through the inside of the heater(10) horizontally; a reaction body(30) putting the raw material powder and the substrate therein and located in the reaction tube(20).

Abstract translation: 目的：提供一种方法和装置，通过控制反应管的内部温度和载气的共混比，可重复生成各种氧化锌纳米结构。 纳米结构易于对准和组装。 构成：氧化锌的纳米结构是通过将氧化锌粉末和石墨在含有1-20体积％氧气的载气存在下在800-950℃的温度下还原至氩气来制备的，然后再生成锌气体 将锌气体沉积在硅树脂基底上并生长。 并且，上述纳米结构体的制造装置具备：加热器（10），其将反应管（20）的内部温度保持在800-950℃，以加热基材和原料粉末; 所述反应管（20）具有载气入口孔（21）和载气排出孔（22），所述载气出口孔（22）水平地穿过所述加热器（10）的内部; 将原料粉末和基材放置在反应管（20）内的反应体（30）。

公开(公告)号：KR1020040085938A

公开(公告)日：2004-10-08

申请号：KR1020030020799

申请日：2003-04-02

Applicant: 한국과학기술연구원

Inventor： 박재환 ,  박재관 ,  신동순 ,  최영진

IPC: C04B35/468

CPC classification number: C04B35/468 ,  B32B2311/08 ,  C04B35/4686 ,  C04B35/4688 ,  C04B35/472 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3296 ,  C04B2235/3298 ,  C04B2235/365 ,  C04B2235/656 ,  C04B2235/77 ,  C04B2235/79 ,  C04B2237/346 ,  C04B2237/408 ,  H01P1/203

Abstract: PURPOSE: A dielectric composition comprising glass frits in the K2O-Na2O-Li2O-B2O3-SiO2 system and dielectric ceramics in the BaO-TiO2 system is provided, which has high dielectric constant, large Q value at high frequency and low temperature sintering. CONSTITUTION: The high-k dielectric composition comprises 84-97wt.% of BaO-nTiO2(n=4.0-4.5) dielectric ceramics for high dielectric constant and 3-16wt.% of Li2O-B2O3-SiO2 glass frits composed of 7-40wt.% of SiO2, 33-60wt.% of B2O3 and 18-41wt.% of Li2O for low temperature sintering, wherein Li2O is replaced with 0-50wt.% of K2O and 0-50wt.% of Na2O, and glass frits have 6.4-8.5 of dielectric constant, 350-510 deg.C of glass transition temperature and 0.3-1.0% of dielectric loss. Also dielectric composition contains dielectric ceramics in the system (Ba,Pb)Nd2O3-TiO2 or BaO-(Bi,Nd)2O3-TiO2, replacing BaO-nTiO2. The resultant dielectric composition, having 25-35 of dielectric constant, 6000-20000GHz of Q value(Qxf) and more than 99% of density under 875deg.C, is applied to resonators and circuit boards in the high frequency range.

Abstract translation: 目的：提供一种包含K2O-Na2O-Li2O-B2O3-SiO2体系玻璃料的电介质组合物和BaO-TiO2体系中的介电陶瓷，其介电常数高，在高频低温烧结时具有较大的Q值。 构成：高k电介质组合物包含84-97wt。％的高介电常数的BaO-nTiO 2（n = 4.0-4.5）介电陶瓷和3-16wt。％的由7-40wt％组成的Li2O-B2O3-SiO2玻璃料 ，SiO2，33-60重量％，B2O3和18-41重量％的Li2O用于低温烧结，其中Li2O被0-50重量％的K2O和0-50重量％的Na2O代替，玻璃料具有 介电常数为6.4-8.5，玻璃化转变温度为350-510摄氏度，介电损耗为0.3-1.0％。 电介质组成也包含系统（Ba，Pb）Nd2O3-TiO2或BaO-（Bi，Nd）2O3-TiO2中的介电陶瓷，代替BaO-nTiO2。 在高频范围内，对谐振器和电路板施加具有25-35的介电常数，6000-20000GHz的Q值（Qxf）和大于99％的密度的875℃的电介质组合物。

公开(公告)号：KR100419868B1

公开(公告)日：2004-02-25

申请号：KR1020010026056

申请日：2001-05-14

Applicant: 한국과학기술연구원

Inventor： 박재환 ,  박재관 ,  김윤호

IPC: C04B35/04 ,  H01B3/12 ,  H01G4/12

Abstract: PURPOSE: A dielectric ceramic composition of the MgO-CaO-TiO2(MCT) system is provided for use as low temperature fired multilayer substrates requiring excellent microwave dielectric characteristics and low temperature firing(

Abstract translation: 目的：提供一种MgO-CaO-TiO2（MCT）系统的介电陶瓷组合物，用作需要优异的微波介电特性和低温烧制（≤1100℃）的低温烧制多层基片。 构成：低温共烧陶瓷（LTCC）介电陶瓷组合物的制造方法包括以下步骤： （i）球磨原材料，MgO，CaO和TiO2，并在1100℃煅烧; （ii）添加2-10％（基于组合物总量）的烧结助剂，例如包含B 2 O 3和SiO 2的硼硅酸盐玻璃以及选自BaO，ZnO和PbO中的至少一种碱金属氧化物以降低烧制温度并获得良好 其中助烧剂是含有摩尔比为30:60:10的BaO，B 2 O 3和SiO 2的氧化物; （iii）成形; （iv）在1050-1100℃发射。 在1100℃焙烧的所得介电陶瓷组合物具有以下微波特性：20-21的介电常数，9100-11000的Qf和谐振系数的接近零温度系数。

公开(公告)号：KR100390281B1

公开(公告)日：2003-07-07

申请号：KR1020000069528

申请日：2000-11-22

Applicant: 한국과학기술연구원

Inventor： 제해준 ,  박재관 ,  조운조 ,  김병국 ,  김진상

IPC: G11B5/127

Abstract: PURPOSE: A junction glass for fixing a magnetic head is provided to have a thermal expansion coefficient similar to ferrite, have a junction temperature under 450 °C to be lower than a softening point of a gap junction glass, and to prevent the generation of recrystallization upon heat processing. CONSTITUTION: A junction glass has a low fusion point and is used for fixing a magnetic head at a temperature under 450 °C. An MIG(Metal-In-Gap) type magnetic head core is coupled to a gap of a top shield that is composed of ferrite and CaTiO3, wherein a metal magnetic thin film is formed in a gap of a pair of ferrite cores and a gap junction glass is used for coupling the gap to form the magnetic head core by mutually coupling the ferrite cores. And the junction glass for fixing the magnetic head consists of, in percentage, PbO 50-90%, B2 O3 5-20%. ZnO 0-15%, Cu2 O 0-10%, Bi2 O3 0-5%. and SiO2 0-5%.

Abstract translation: 本发明提供一种用于固定磁头的接合玻璃，其热膨胀系数与铁氧体相似，其结温低于450℃，低于间隙接合玻璃的软化点， 通过热处理产生再结晶。 组成：中继玻璃具有低熔点，用于在450℃和低于450℃的温度下固定磁头。 MIG（Metal-In-Gap）型磁头磁芯与由铁氧体和CaTiO 3组成的顶部屏蔽的间隙连接，其中在一对铁氧体磁心的间隙中形成金属磁性薄膜， 中间玻璃用于通过相互耦合铁氧体磁芯来耦合间隙以形成磁头磁芯。 用于固定磁头的接合玻璃由百分比为PbO 50-90％，B2O3 5-20％组成。 ZnO 0-15％，Cu 2 O 0-10％，Bi 2 O 3 0-5％。 和SiO2 0-5％。

公开(公告)号：KR100389688B1

公开(公告)日：2003-06-27

申请号：KR1020000069529

申请日：2000-11-22

Applicant: 한국과학기술연구원

Inventor： 제해준 ,  박재관 ,  조운조 ,  김병국 ,  김진상

IPC: G11B5/127

Abstract: PURPOSE: A junction glass for fixing a magnetic head is provided to have a thermal expansion coefficient similar to ferrite, to have a junction temperature lower than a softening point of a gap junction glass, and to prevent the generation of recrystallization upon heat treatment. CONSTITUTION: Two ferrite cores are coupled with a gap junction glass, to form a magnetic head core(1). The magnetic head core is inserted in a core inserting groove of a slider(3). A junction glass(4) for fixing the magnetic head has a heat treatment temperature lower than a softening point of the gap junction glass, and is loaded on the magnetic head core. The junction glass for fixing the magnetic head is fused and injected to a gap of the core inserting groove, to couple the magnetic head core to the core inserting groove. The junction glass for fixing the magnetic head consists of, in percentage, PbO 60-80%, SiO2 5-20%, B2 O3 2-10%. Al2 O3 0-5%, ZnO 0-5%, Fe2 O3 0-5%, CuO 0-5%, TeO2 2-15%, and Bi2 O3 2-15%.

Abstract translation: 目的：提供一种用于固定磁头的接合玻璃，其热膨胀系数与铁氧体相似，其结点温度低于间隙接合玻璃的软化点，并防止热处理时产生再结晶。 组成：两个铁氧体磁芯与间隙连接玻璃耦合，形成一个磁头磁芯（1）。 磁头芯被插入滑块（3）的芯插入槽中。 用于固定磁头的接合玻璃（4）的热处理温度低于间隙接合玻璃的软化点，并装载在磁头芯上。 用于固定磁头的接合玻璃熔融并注入到芯插入槽的间隙中，以将磁头芯连接到芯插入槽。 用于固定磁头的接合玻璃由百分比为PbO 60-80％，SiO 2 5-20％，B 2 O 3 2-10％组成。 Al 2 O 3 0-5％，ZnO 0-5％，Fe 2 O 3 0-5％，CuO 0-5％，TeO 2 2-15％和Bi 2 O 3 2-15％。

公开(公告)号：KR1020020039740A

公开(公告)日：2002-05-30

申请号：KR1020000069528

申请日：2000-11-22

Applicant: 한국과학기술연구원

Inventor： 제해준 ,  박재관 ,  조운조 ,  김병국 ,  김진상

IPC: G11B5/127

Abstract: PURPOSE: A junction glass for fixing a magnetic head is provided to have a thermal expansion coefficient similar to ferrite, have a junction temperature under 450 °C to be lower than a softening point of a gap junction glass, and to prevent the generation of recrystallization upon heat processing. CONSTITUTION: A junction glass has a low fusion point and is used for fixing a magnetic head at a temperature under 450 °C. An MIG(Metal-In-Gap) type magnetic head core is coupled to a gap of a top shield that is composed of ferrite and CaTiO3, wherein a metal magnetic thin film is formed in a gap of a pair of ferrite cores and a gap junction glass is used for coupling the gap to form the magnetic head core by mutually coupling the ferrite cores. And the junction glass for fixing the magnetic head consists of, in percentage, PbO 50-90%, B2 O3 5-20%. ZnO 0-15%, Cu2 O 0-10%, Bi2 O3 0-5%. and SiO2 0-5%.

Abstract translation: 目的：提供用于固定磁头的接合玻璃以具有与铁素体相似的热膨胀系数，结温在450℃以下，以便低于间隙接合玻璃的软化点，并且防止再结晶的产生 经热处理。 结构：接合玻璃具有低熔点，用于在450℃的温度下固定磁头。 MIG（金属间隙）型磁头芯与由铁氧体和CaTiO 3组成的顶部屏蔽的间隙耦合，其中金属磁性薄膜形成在一对铁氧体磁芯的间隙和间隙 连接玻璃用于通过相互耦合铁氧体磁芯来连接间隙以形成磁头芯。 用于固定磁头的接合玻璃由以下百分比组成：PbO 50-90％，B2 O3 5-20％。 ZnO 0-15％，Cu 2 O 0-10％，Bi 2 O 3 0-5％。 和SiO 2 0-5％。

公开(公告)号：KR1020020033359A

公开(公告)日：2002-05-06

申请号：KR1020000064252

申请日：2000-10-31

Applicant: 한국과학기술연구원

Inventor： 제해준 ,  박재관 ,  조운조 ,  김병국 ,  김진상

IPC: G11B5/10

Abstract: PURPOSE: A junction glass for magnetic heads is provided to have a thermal expansion coefficient similar to ferrite and to have a junction temperature under 600 °C. And the junction glass is provided to have an excellent water resistance and an abrasion resistance, and to prevent the encroachment of a thin film or the generation of foam upon heat treatment. CONSTITUTION: A junction glass has a low fusion point that is used for uniting or fixing a magnetic head at a temperature under 600 °C. The junction glass for magnetic heads is used to unite or fix an MIG(Metal In Gap) type magnetic head, in which a FeN type metal magnetic thin film is formed in a gap of a pair of ferrite cores. And the junction glass for magnetic heads consists of, in percentage, PbO 45-80 %, SiO2 5-25%, B,.2 O3 0-10%. Bi2 O3 0-20%, Al2 O3 0-10%, .ZnO 0-10%, Fe2 O3 0-5%, Sb2 O3 0-2%, and Na2 O and K2 O 0-10%.

Abstract translation: 目的：提供用于磁头的接合玻璃以具有与铁素体相似的热膨胀系数，并具有低于600℃的结温。 并且提供接合玻璃以具有优异的耐水性和耐磨性，并且在热处理时防止薄膜的侵入或泡沫的产生。 结构：接合玻璃具有低熔点，用于在600℃以下的温度下结合或固定磁头。 用于磁头的接合玻璃用于联合或固定在一对铁氧体磁心的间隙中形成FeN型金属磁性薄膜的MIG（金属间隙）型磁头。 用于磁头的接合玻璃以PbO 45-80％，SiO 2 5-25％，B，.0 O 3 0-10％的百分比组成。 Bi 2 O 3 0-20％，Al 2 O 3 0-10％，ZO 10-10％，Fe 2 O 3 0-5％，Sb 2 O 3 0-2％，Na 2 O和K 2 O 0-10％。

公开(公告)号：KR1020020028279A

公开(公告)日：2002-04-17

申请号：KR1020000059208

申请日：2000-10-09

Applicant: 한국과학기술연구원

Inventor： 김윤호 ,  박재관 ,  박재환 ,  김성호

IPC: H01C7/115

Abstract: PURPOSE: A method for manufacturing a varistor-capacitor multifunctional device is provided to simultaneously obtain varistor characteristic and capacitor characteristic of a dielectric index larger than 10000 and dielectric loss less than 5%. CONSTITUTION: A SrTiO3 SMD varistor-capacitor multifunctional device is manufactured by using Sr0.9Ca0.1TiO3 as basic material powder. The basic material powder is subjected to wet milling after Nb2O5 of 0.4-0.6 mol% is added and SiO2 of 0.1-0.3 mol% and MnO of 0.1-0.3 mol% are added. Organic vehicle is added to the basic material powder after wet milling to form slurry. The slurry is molded by a tape caster to form a ceramic sheet. After cutting the ceramic sheet, internal electrodes are printed on the ceramic sheet by Ag/Pd or Ni electrodes. Three to five ceramic sheets are deposited on and on and subjected to pre-sintering at 1100°C for 1 hour. The sintered ceramic is re-oxidized in a furnace with the air at 900-1100°C.

Abstract translation: 目的：提供一种用于制造可变电阻电容器多功能元件的方法，以同时获得介电指数大于10000的介电损耗和小于5％的介电损耗的压敏电阻特性和电容器特性。 构成：使用Sr0.9Ca0.1TiO3作为基本材料粉末制造SrTiO3 SMD压敏电阻 - 电容器多功能元件。 在添加0.4-0.6摩尔％的Nb2O5后，将基本材料粉末进行湿磨，并加入0.1-0.3摩尔％的SiO 2和0.1-0.3摩尔％的MnO。 湿法研磨后，将有机载体添加到基础材料粉末中以形成浆料。 浆料通过胶带机成型以形成陶瓷片。 在切割陶瓷片之后，通过Ag / Pd或Ni电极将内部电极印刷在陶瓷片上。 沉积三到五个陶瓷片，并在1100℃下预烧结1小时。 烧结陶瓷在炉中再次氧化，空气在900-1100℃。

公开(公告)号：KR100310035B1

公开(公告)日：2001-11-14

申请号：KR1019990001054

申请日：1999-01-15

Applicant: 한국과학기술연구원

Inventor： 박재환 ,  이득우 ,  박재관 ,  김윤호

IPC: C04B35/465

Abstract: 저온소성이가능하면서도우수한마이크로파특성을갖는유전체세라믹조성물이제공된다. 본발명의조성물은 (MgCa)TiO에 BO및 MnO를첨가제로사용함으로써저온소결이가능한한편, 양호한마이크로파특성을갖는다. 1200℃에서적정량의 BO를첨가한영역에서는 1350℃에서소결한순수한 (MgCa)TiO보다높은품질계수값을나타내었다.