JP5177342B2 - セラミックス磁器の製造方法 - Google Patents
セラミックス磁器の製造方法 Download PDFInfo
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- JP5177342B2 JP5177342B2 JP2006096570A JP2006096570A JP5177342B2 JP 5177342 B2 JP5177342 B2 JP 5177342B2 JP 2006096570 A JP2006096570 A JP 2006096570A JP 2006096570 A JP2006096570 A JP 2006096570A JP 5177342 B2 JP5177342 B2 JP 5177342B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Description
混合物を焼結させてセラミックス磁器を得るのに際して、セラミックス磁器内に単斜晶セルシアンを析出させることを特徴とする。
前記混合物を焼結させてセラミックス磁器を得るのに際して、前記セラミックス磁器内に針状の単斜晶セルシアンを析出させる工程を含む。
ZnO-SiO2-B2O3、SiO2-B2O3、BaO-Al2O3-SiO2-B2O3、BaO-Bi2O3-B2O3、Li2O-R2O3-SiO2-B2O3、Li2O-RO-SiO2-B2O3 (Rはアルカリ土類金属)
X線回折装置名: RIGAKU製「Multi Flex」
管球:Cu管電圧: 50kV管電流:30mA モノクロメーター:入射側Ge発散スリット:1/2deg散乱スリット:1/2deg受光スリット:0.15mmステップ:0.02deg計数時間:2.0sec
BaO−TiO2−ZnO−SiO2−B2O3: BaO−TiO2−Bi2O3−Nd2O3−ZnO−SiO2−B2O3: BaO−TiO2−Bi2O3−La2O3−Sm2O3−ZnO−SiO2−B2O3: MgO−CaO−TiO2−ZnO−Al2O3−SiO2−B2O3
MnO−ZnO−Fe2O3−CuO: MnO−ZnO−Fe2O3−CuO−SiO2: MnO−ZnO−Fe2O3−CuO−Ta2O5:
MnO−ZnO−Fe2O3−CuO−SiO2−Ta2O5: NiO−ZnO−Fe2O3: MnO−ZnO−Fe2O3: MnO−ZnO−Fe2O3−Bi2O3−MoO3:NiO−CuO−ZnO
PbO−ZrO2−TiO2: PbO−ZrO2−TiO2−Sb2O3: K2O−Na2O−Li2O−Nb2O5−Ta2O5−Bi2O3: PbO−CoO−Nb2O3−ZrO2−TiO2: PbO−MgO−Nb2O3−Yb2O3−TiO2−ZrO2: BaO−TiO2
(セラミック粉体の製造)
炭酸バリウム、酸化チタンおよび酸化亜鉛の各粉体を、表1に示す所定組成となるように秤量した。ただし、アルミナ、酸化マンガンの各粉体を、それぞれ、0.5重量部、0.8重量部となるように秤量し、添加した。これら混合物を湿式混合し、この混合粉体を1250℃で仮焼し、仮焼体を得た。仮焼物の結晶相とその結晶性を調べるために、粉体X線回折測定を行ったところ、以下の結晶相が得られた。
BaZn2.03Ti3.93O10.89相(ICSD No.81-2380)
TiZn2O4相 (ICSD No.77-0014)
TiO2(ルチル)相 (ICSD No.73-1765)
SiO2、ZnO、B2O3の各粉体を秤量し、乾式混合し、混合粉体を白金ルツボ中で溶融させ、溶融物を水中に投下して急速冷却し、塊状のガラスを得る。このガラスを湿式粉砕し、低融点ガラス粉体を得る。
炭酸バリウム、アルミナおよび酸化珪素の各粉体を、セルシアンの組成比率に合わせて湿式混合し、1350℃で仮焼し、六方晶セルシアン仮焼物を得た。これを粗粉砕し、仮焼粉体を得た。得られた仮焼粉体のX線回折パターンは、六方晶セルシアンに一致した。
前記したセラミックス原料粉体、ガラス粉体および六方晶セルシアン粉体を一緒に微粉砕した。一方、有機溶剤、バインダー、可塑剤および分散剤を混合し、微粉砕された混合粉体へと添加し、アルミナポット、アルミナボールを使用して混合し、スラリーを得、スラリーを乾燥して造粒粉体を得た。得られた造粒粉体を金型プレスにて所定の形状に成形し、920℃にて焼成し、焼結体磁器を得た。
得られた焼結体の開気孔率をアルキメデス法によって測定した。
各磁器試料について、X線回折ピークを前述の条件にて測定した。この結果、以下の結晶相を確認した。
前記したセラミック粉体、ガラス粉体および六方晶セルシアン粉体を、有機バインダー、可塑剤、分散剤および有機溶剤と共に、アルミナポット、アルミナボールを使用して湿式混合し、グリーンシート成形用スラリーを得た。このスラリーを用いてドクターブレード装置によって、厚み0.03〜2mmの各グリーンシートを成形した。各グリーンシートを所定枚数積層してCIP法によって積層体を得、ダイサーにて11mm×8mm×3mmの形状に切断し、920℃で焼成することによって、焼結体を得た。次いで、焼結体を洗浄し、ニッケル中で電解メッキを行い、次いでスズ中性浴中で電解メッキを行い、得られた試料を洗浄した。この試料について、JIS−R−1607 圧子圧入法(IF法)に従って破壊靱性値を測定した。
上記したと同様にして、厚み0.03〜2mmの各グリーンシートを成形した。各グリーンシートにモデルパターンとして図5(a)、(b)の共振器電極パターン11をAg-Pt(Pt1重量%)ペーストにてスクリーン印刷し、各グリーンシート10、12を、図5(b)の積層構造となるように所定枚数積層してCIP法によって積層体を得、焼成後寸法が3.2×2.5×1.8mmとなるようにダイサーにて切断し、外装電極印刷後、920℃で焼結させた。得られた焼結体を次の熱衝撃および高湿度条件に暴露し、次いで超音波探傷法によってクラックの有無を評価した。クラックの有無の確認は、超音波探傷装置(日立建機株式会社製「マイスコープ」)でクラックの部分からの超音波エコー反射の画像データにより判断した。それぞれ1000個の試料について測定し、不良品の発生個数を表に示す。
(熱衝撃条件)
−55℃〜+125℃を1サイクルとし、1サイクルを1時間とし、33サイクル実施した。
(高湿度条件)
85℃、85%RH 240時間
BaZn2Ti4O11相(ICSD No.81-2380)
TiZn2O4相 (ICSD No.77-0014)
TiO2(ルチル)相 (ICSD No.73-1765)
単斜晶セルシアン相(ICSD No.74-1677)
長さ 2.1μm 直径 0.4μm アスペクト比 5.3
長さ 1.4μm 直径 0.4μm アスペクト比 3.5
長さ 1.6μm 直径 0.4μm アスペクト比 4.0
長さ 1.3μm 直径 0.4μm アスペクト比 3.3
試験番号1〜10と同様にして,表2に示す各磁器を製造した。この結果、セラミックス原料粉体に30重量部以下の六方晶セルシアンを添加し、磁器中に単斜晶セルシアンを析出させた場合には、破壊靱性値が著しく向上し、クラックが防止されることがわかった。ただし、酸化バリウムが30重量部を超えると、磁器に強誘電体が生成していた。
試験番号1〜10と同様にして,表3に示す各磁器を製造した。この結果、セラミックス原料粉体に30重量部以下の六方晶セルシアンを添加し、磁器中に単斜晶セルシアンを析出させた場合には、破壊靱性値が著しく向上し、クラックが防止されることがわかった。
試験番号1〜10と同様にして,表4に示す各磁器を製造した。この結果、セラミックス原料粉体に30重量部以下の六方晶セルシアンを添加し、磁器中に単斜晶セルシアンを析出させた場合には、破壊靱性値が著しく向上し、クラックが防止されることがわかった。
試験番号1〜10と同様にして,表5に示す各磁器を製造した。この結果、セラミックス原料粉体に30重量部以下の六方晶セルシアンを添加し、磁器中に単斜晶セルシアンを析出させた場合には、破壊靱性値が著しく向上し、クラックが防止されることがわかった。
Claims (4)
- BaO:9.0〜26.0重量%,TiO 2 :30.0〜75.0重量%およびZnO:0.1〜38.0重量%のセラミックス組成を有しているセラミックス原料粉体100重量部に対して0.5重量部以上、30重量部以下の六方晶系セルシアン粉体を添加して混合物を得る工程;および
前記混合物を焼結させてセラミックス磁器を得るのに際して、前記セラミックス磁器内に単斜晶セルシアンを析出させることを特徴とする、セラミックス磁器の製造方法。 - 前記セラミックス原料粉体が、BaO、TiO2およびZnOの合計量を100重量部としたとき、更にAl2O3:0.7〜15.0重量部、SiO2:0.1〜15.0重量部,MnO:0.1〜5.5重量部およびB2O3:0.1〜20.0重量部を含有していることを特徴とする、請求項1記載のセラミックス磁器の製造方法。
- 前記混合物に対して焼結助剤を添加することを特徴とする、請求項1または2記載のセラミックス磁器の製造方法。
- 前記焼結時の温度が850℃以上、930℃以下であることを特徴とする、請求項1〜3のいずれか一つの請求項に記載のセラミックス磁器の製造方法
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JP2006096570A JP5177342B2 (ja) | 2006-03-31 | 2006-03-31 | セラミックス磁器の製造方法 |
EP07739226A EP2003100A4 (en) | 2006-03-31 | 2007-03-14 | METHOD FOR MANUFACTURING CERAMIC PORCELAIN, CERAMIC PORCELAIN, AND ELECTRONIC COMPONENTS |
CN2007800115639A CN101410345B (zh) | 2006-03-31 | 2007-03-14 | 陶瓷器的制造方法、陶瓷器和电子部件 |
PCT/JP2007/055783 WO2007114055A1 (ja) | 2006-03-31 | 2007-03-14 | セラミックス磁器の製造方法、セラミックス磁器および電子部品 |
KR1020087024265A KR100981072B1 (ko) | 2006-03-31 | 2007-03-14 | 세라믹스 자기의 제조 방법, 세라믹스 자기 및 전자부품 |
US12/283,125 US7727920B2 (en) | 2006-03-31 | 2008-09-09 | Process for production of ceramic porcelains, ceramic procelains and electronic components |
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JP5478404B2 (ja) * | 2010-07-23 | 2014-04-23 | 日本カーバイド工業株式会社 | アルミナセラミックの製造法 |
US9352532B2 (en) * | 2013-04-30 | 2016-05-31 | Hewlett-Packard Development Company, L.P. | Film stack including adhesive layer |
CN116835979B (zh) * | 2023-07-03 | 2023-12-19 | 安徽宁晶新材料科技有限公司 | 一种适合ltcc滤波器用的高介电常数低温共烧陶瓷粉体及其制备方法 |
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US4018614A (en) * | 1976-04-01 | 1977-04-19 | Corning Glass Works | Celsian-zirconia compositions |
US5358912A (en) * | 1991-08-08 | 1994-10-25 | Loral Vought Systems Corporation | BAS reinforced in-situ with silicon nitride |
US5538925A (en) * | 1995-08-14 | 1996-07-23 | The United States Of America As Represented By The Secretary Of The Navy | Si3 N4 reinforced monoclinic BaO.Al2 O3 2S2 and SrO.Al2 O3.2SiO2 ceramic composites |
JP3741556B2 (ja) * | 1999-01-22 | 2006-02-01 | 日本碍子株式会社 | 低温焼成磁器およびこれを備えた電子部品 |
US6379805B1 (en) * | 1999-01-22 | 2002-04-30 | Ngk Insulators, Ltd. | Low temperature-fired porcelain articles and electronic parts including such porcelain articles |
US6630417B2 (en) * | 2000-05-30 | 2003-10-07 | Kyocera Corporation | Porcelain composition, porcelain and method of producing the same, and wiring board and method of producing the same |
JP5057620B2 (ja) | 2000-08-28 | 2012-10-24 | 京セラ株式会社 | 低温焼成セラミック焼結体、並びに配線基板 |
DE10141910B4 (de) * | 2000-08-28 | 2008-10-16 | Kyocera Corp. | Glaskeramiksinterprodukt und Verfahren zu seiner Herstellung |
JP4248165B2 (ja) * | 2001-06-27 | 2009-04-02 | 日本碍子株式会社 | 低温焼成磁器および電子部品 |
JP2004203646A (ja) * | 2002-12-24 | 2004-07-22 | Ngk Insulators Ltd | 低温焼成磁器および電子部品 |
JP2004339049A (ja) * | 2003-04-21 | 2004-12-02 | Asahi Glass Co Ltd | 誘電体形成用無鉛ガラス、誘電体形成用ガラスセラミックス組成物、誘電体および積層誘電体製造方法 |
WO2004094338A1 (ja) * | 2003-04-21 | 2004-11-04 | Asahi Glass Company, Limited | 誘電体形成用無鉛ガラス、誘電体形成用ガラスセラミックス組成物、誘電体および積層誘電体製造方法 |
JP5057644B2 (ja) * | 2004-03-22 | 2012-10-24 | 京セラ株式会社 | ガラスセラミック組成物およびガラスセラミック焼結体の製造方法 |
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EP2003100A9 (en) | 2009-04-22 |
EP2003100A2 (en) | 2008-12-17 |
CN101410345A (zh) | 2009-04-15 |
JP2007269540A (ja) | 2007-10-18 |
KR20080104176A (ko) | 2008-12-01 |
EP2003100A4 (en) | 2012-02-22 |
CN101410345B (zh) | 2012-09-05 |
US7727920B2 (en) | 2010-06-01 |
KR100981072B1 (ko) | 2010-09-08 |
US20090048089A1 (en) | 2009-02-19 |
WO2007114055A1 (ja) | 2007-10-11 |
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