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    니켈 금속분말 제조방법
    33.
    发明公开
    니켈 금속분말 제조방법 无效
    一种制备NI金属粉末的方法

    公开(公告)号：KR1020050043345A

    公开(公告)日：2005-05-11

    申请号：KR1020030078199

    申请日：2003-11-06

    Applicant: 삼성전기주식회사

    Inventor： 김정욱 ,  허강헌 ,  김상혁 ,  이종호

    IPC: B22F9/24

    Abstract: 입자 크기 분포가 고르고, 분산성이 우수하며, 적층세라믹 콘덴서의 내부전극 재료에 사용가능한 구형 니켈 분말 제조방법이 제공된다.
    니켈 분말은 니켈 전구체 화합물에 니켈 1몰당 히드라진을 2 -20몰로 첨가하여 니켈 히드라진 착화물을 생성하는 단계; 및 상기 니켈 히드라진 착화물에 농도가 40중량% 이상인 알칼리 금속의 수산화물을 첨가하는 단계를 포함하는 방법으로 제조된다. 알칼리 금속 수산화물의 수화발열로 반응이 가열됨으로 반응물이 고른 온도분포로 가열되어, 입자크기 분포가 균일하며 분산성이 좋은 구형의 미세한 니켈 금속 분말로 제조되며, 이는 적층세라믹 콘덴서의 내부전극 재료로 사용하기 적합한 것이다.

    옥살레이트 공정에 의한 티탄산바륨계 분말의 제조방법
    35.
    发明授权
    옥살레이트 공정에 의한 티탄산바륨계 분말의 제조방법 有权
    옥살레이트공정에의한티탄산바륨계분말의제조방옥살

    公开(公告)号：KR100431176B1

    公开(公告)日：2004-05-12

    申请号：KR1020010035131

    申请日：2001-06-20

    Applicant: 삼성전기주식회사

    Inventor： 이재준 ,  허강헌

    IPC: C01G23/00

    CPC classification number: C01G25/006 ,  C01G23/006 ,  C01G25/00 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/40

    Abstract: The method is carried out in the following manner: An aqueous mixture solution containing barium chloride and titanium chloride is added into an aqueous oxalic acid solution, so that barium titanyl oxalate would be precipitated. Then the precipitates are aged, washed and filtered. The filtered barium titanyl oxalate precipitates are crushed, and dried. Then a thermal decomposition is carried out to obtain a agglomerated barium titanate powder, and this is crushed again to obtain the final barium titanate powder. In order to obtain barium titanate based powder such as Ba(Ti1-zZrz)O3, (Ba1-xCax)(Ti1-zZrz)O3, and (Ba1-x-yCaxSry)(Ti1-zZrz)O3, the desired elements (Ca, Sr, Zr and so on) are added to barium titanyl oxalate when crushed before thermal decomposition step. After thermal decomposition and crushing, the barium titanate based powder can be obtained.

    Abstract translation: 该方法按以下方式进行：向草酸水溶液中加入含有氯化钡和氯化钛的混合水溶液，以使草酸氧钛钡沉淀。 然后将沉淀老化，洗涤并过滤。 过滤的钛酸钡草酸盐沉淀物被粉碎并干燥。 然后进行热分解以获得凝聚的钛酸钡粉末，并且将其再次粉碎以获得最终的钛酸钡粉末。 为了得到Ba（Ti1-zZrz）O3，（Ba1-xCax）（Ti1-zZrz）O3，（Ba1-x-yCaxSry）（Ti1-zZrz）O3等钛酸钡系粉末， ，Sr，Zr等）在热分解步骤之前被粉碎时添加到草酸氧钛钡中。 热分解和粉碎后，可以获得钛酸钡基粉末。

    저손실 고유전율 고주파 유전체 조성물
    36.
    发明授权
    저손실 고유전율 고주파 유전체 조성물 失效
    저손실고유전율고주파유전체조성물

    公开(公告)号：KR100395088B1

    公开(公告)日：2003-08-21

    申请号：KR1020000073238

    申请日：2000-12-05

    Applicant: 삼성전기주식회사

    Inventor： 김우섭 ,  김준희 ,  허강헌 ,  김종한

    IPC: C04B35/46 ,  H01B3/12 ,  H01G4/12

    Abstract: PURPOSE: Provided is a high frequency dielectric composition, aZrO2 - bZnO - cTa2O5 - dTiO2(0.0 =42, Q value>=30000 and temperature coefficient of resonance frequency(TCF) of -10 to +10ppm/deg.C, and good sinterability.

    Abstract translation: 目的：提供一种高频介电组合物，ZrO 2 -bZnO-cTa 2 O 5 -dTiO 2（0.0≤a≤45.0,1.0≤b≤20.0,1.0≤c≤20.050.0≤d≤1.0） = 60.0），具有高Qf值，高介电常数和低共振频率温度系数（TCF）。 构成：高频介电组合物包含ZrO 2 -bZnO-cTa 2 O 5 -dTiO 2（0.0≤a≤45.0,1.0≤b≤20.0,1.0≤c≤20.050.0≤d≤60.0 ）作为主要体系，添加至少一种选自MgO，MnO 2，CaO，SiO 2，Sb 2 O 5，Sb 2 O 3，Al 2 O 3和WO 3中的至少一种化合物作为添加剂。 所得的应用于双工器的介电组合物的介电常数≥42，Q值≥30000，并且谐振频率温度系数（TCF）为-10〜+ 10ppm /℃，并具有良好的可烧结性。

    티탄산바륨계 파우더의 제조방법
    37.
    发明公开
    티탄산바륨계 파우더의 제조방법 有权
    钛酸钡粉末的制备

    公开(公告)号：KR1020030015011A

    公开(公告)日：2003-02-20

    申请号：KR1020010049048

    申请日：2001-08-14

    Applicant: 롯데정밀화학 주식회사 ,  삼성전기주식회사

    Inventor： 정재철 ,  양우영 ,  김건일 ,  박연정 ,  이준희 ,  허강헌 ,  박선철 ,  이재준

    IPC: C01G23/00

    CPC classification number: H01G4/1227 ,  C01G23/006 ,  C01P2006/10 ,  C01P2006/40 ,  C04B35/6261 ,  C04B35/62655 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3236 ,  C04B2235/3244 ,  C04B2235/444 ,  C04B2235/449 ,  C04B2235/5409 ,  C04B2235/608 ,  C04B2235/77 ,  C04B2235/79

    Abstract: PURPOSE: A preparation method of barium titanate powder with good dielectric characteristics and high yield is provided by preparing powder by an oxalate method and wet milling powder mixed with N-contained additive, and thermal treating. CONSTITUTION: The preparation method of BaTiO3 powder comprises the steps of: (i) spraying a mixed solution of BaCl2 and TiCl4 over oxalic acid(H2C2O4) to form barium titanyl oxalate(BaTiO(C2O4)-4H2O, BTO) particles; (ii) aging for 0.5-2hrs and washing; (iii) wet milling BTO particles with 0.5-20mol%(based on barium titanyl oxalate) of N-contained additives to prevent acidification of the mixture, viscosity increase after milling, and decrease of dielectric characteristics, where M2+(Mg, Ca, Sr) or M4+(Zr, Hf, Sn) is optionally added to form Perovskite barium titanium compounds; (iv) thermal treating at 700-1200deg.C for BaTiO3 powder. The N-contained additive is selected from ammonia, amine such as mono(di, tri)-methyl amine or di(tri)-ethyl amine, and ammonium compound such as ammonium hydroxide, ammonium carbonate, ammonium acetate, etc.

    Abstract translation: 目的：通过草酸盐法制备粉末，与含氮添加剂混合的湿磨粉末和热处理，提供介电特性好，产率高的钛酸钡粉末的制备方法。 组成：BaTiO3粉末的制备方法包括以下步骤：（i）将草酸（H 2 C 2 O 4）上的BaCl 2和TiCl 4的混合溶液喷雾以形成草酸氧钛钡（BaTiO（C 2 O 4）-4H 2 O，BTO）颗粒; （ii）老化0.5-2小时并洗涤; （iii）用0.5-20mol％（基于草酸钡氧钛）的含N添加剂的湿磨BTO颗粒以防止混合物酸化，研磨后粘度增加，介电特性降低，其中M2 +（Mg，Ca，Sr ）或M4 +（Zr，Hf，Sn），以形成钙钛矿钡钛化合物; （iv）对于BaTiO 3粉末，在700-1200℃热处理。 含N的添加剂选自氨，单（二，三） - 甲胺或二（三） - 乙胺等胺类，氢氧化铵，碳酸铵，乙酸铵等铵化合物。

    저손실 고주파용 유전체 조성물
    38.
    发明授权
    저손실 고주파용 유전체 조성물 失效
    低损耗介质材料微波频率组成

    公开(公告)号：KR100332872B1

    公开(公告)日：2002-04-17

    申请号：KR1019990045814

    申请日：1999-10-21

    Applicant: 삼성전기주식회사

    Inventor： 김우섭 ,  김준희 ,  허강헌

    IPC: C04B35/468 ,  H01G4/12

    Abstract: 본발명은저손실고주파용유전체조성물에관한것이며, 그목적하는바는기존의 BaO-TiO계에 WO를첨가함으로서, Ti/Ba비변화와 WO의양변화에따라존재하는상의비율을자유롭게제어하여우수한물성을얻을수 있고, 또한, 여기에선택적으로 ZrO, SnO, ZnO, NbO, AlO등의첨가제를첨가함으로서, 부가적으로소결성향상및 유전특성을제어하고자하는데있다. 상기목적을달성하기위한본 발명은유전체조성물에있어서, BaO-xTiO-yWO와같이표기할때, 몰비로 3.5≤x ≤5.0, 0.01 ≤y ≤0.1를만족하는저손실고주파용유전체조성물에관한것을그 요지로하며, 또한, 이와같은조성물에부가하여, ZrO, SnO, ZnO, MnO, NbO, AlO, SiO, SrCO, MgO, NiO로이루어진그룹으로부터선택된 1종또는 2종이상의첨가제가, 0.1몰이하의비율로함유되는저손실고주파용유전체조성물에관한것을그 요지로한다.

    전자세라믹스의 제조방법
    39.
    发明公开
    전자세라믹스의 제조방법 无效
    电子陶瓷的制备方法

    公开(公告)号：KR1020020007488A

    公开(公告)日：2002-01-29

    申请号：KR1020000040474

    申请日：2000-07-14

    Applicant: 삼성전기주식회사

    Inventor： 권상구 ,  허강헌

    IPC: C04B35/64

    CPC classification number: C04B35/491 ,  C04B2235/6562 ,  C04B2235/6586

    Abstract: PURPOSE: Provided is a preparation method of electronic ceramics with high sintering density and improved electronic(dielectric and piezoelectric) characteristics by controlling sintering atmosphere in two stages. CONSTITUTION: The electronic ceramics are prepared by a conventional process, mixing raw materials containing Pb such as PZT, drying, calcining, grinding and drying, forming, and sintering. The sintering stage is characterized by having a different sintering atmosphere. In a heating range(0.1-20deg.C/min.) between room temperature and sintering initiative temperature(950-1350deg.C), H2 or O2 gas faster than air at diffusion speed is injected within 10min., and in a sintering range, N2, Ar or Ne gas slower than air at diffusion speed is injected.

    Abstract translation: 目的：提供烧结密度高的电子陶瓷的制备方法，并通过两步控制烧结气氛来改善电子（电介质和压电）特性。 规定：电子陶瓷通过常规方法制备，混合含Pb的原料如PZT，干燥，煅烧，研磨和干燥，成型和烧结。 烧结阶段的特征在于具有不同的烧结气氛。 在室温和烧结主动温度（950-1350℃）之间的加热范围（0.1-20℃/分钟）内，在10分钟内注入比扩散速度快于空气的H2或O2气体，并在烧结范围 ，注入扩散速度比空气慢的N 2，Ar或Ne气体。

    저손실 고주파용 유전체 조성물
    40.
    发明公开
    저손실 고주파용 유전체 조성물 失效
    低损耗和高频电介质组成

    公开(公告)号：KR1020010038016A

    公开(公告)日：2001-05-15

    申请号：KR1019990045814

    申请日：1999-10-21

    Applicant: 삼성전기주식회사

    Inventor： 김우섭 ,  김준희 ,  허강헌

    IPC: C04B35/468 ,  H01G4/12

    CPC classification number: H01B3/12 ,  C04B35/468 ,  C04B2235/3258

    Abstract: PURPOSE: Provided is a low loss and high frequency dielectric composition which shows excellent physical properties and has improved sintering property and dielectric property, so that it is applicable to various dielectric substances including materials of duplexer for cellular phone. CONSTITUTION: The low loss and high frequency dielectric composition is represented by BaO-xTiO2-yWO3, wherein x is greater than or equal to 3.5 and smaller than or equal to5.0 and y is smaller than or equal to 0.1 as mole ratio. In the dielectric composition, less than 0.1 mol of at least one additive selected from the group consisting of ZrO2, SnO2, ZnO, MnO2, Nb2O5, Al2O3, SrCO3, MgO and NiO are contained.

    Abstract translation: 目的：提供一种低损耗和高频电介质组合物，其显示出优异的物理性能并且具有改善的烧结性能和介电性能，因此其适用于包括蜂窝电话双工器材料的各种介电材料。 构成：低损耗高频电介质组成由BaO-xTiO2-yWO3表示，其中x大于或等于3.5且小于或等于5.0，y小于或等于0.1摩尔比。 在电介质组合物中，含有小于0.1mol的选自ZrO 2，SnO 2，ZnO，MnO 2，Nb 2 O 5，Al 2 O 3，SrCO 3，MgO和NiO中的至少一种添加剂。

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