KR960022391A - 마이크로 웨이브용 유전체 세라믹 조성물 - Google Patents

마이크로 웨이브용 유전체 세라믹 조성물 Download PDF

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KR960022391A
KR960022391A KR1019940033906A KR19940033906A KR960022391A KR 960022391 A KR960022391 A KR 960022391A KR 1019940033906 A KR1019940033906 A KR 1019940033906A KR 19940033906 A KR19940033906 A KR 19940033906A KR 960022391 A KR960022391 A KR 960022391A
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oxide
composition
dielectric ceramic
ceramic composition
dielectric
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KR1019940033906A
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KR970008712B1 (ko
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이석진
김태홍
박정래
이상석
최태구
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양승택
재단법인 한국전자통신연구소
조백제
한국전기통신공사
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Priority to KR1019940033906A priority Critical patent/KR970008712B1/ko
Priority to US08/559,278 priority patent/US5688732A/en
Priority to JP29842695A priority patent/JP3253835B2/ja
Publication of KR960022391A publication Critical patent/KR960022391A/ko
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
    • C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/12—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3229—Cerium oxides or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3296—Lead oxides, plumbates or oxide forming salts thereof, e.g. silver plumbate
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
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  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

본 발명은 마이크로웨이브용 유전체 세라믹 조성물에 관한 것으로서, 산화바륨(BaO), 산화납(PbO), 산화니오디움(Nd2O3), 산화세륨(CeO2) 및 이산화티탄(TiO2)을 주성분으로 하고, 산화제이동(CuO), 산화아연(ZnO), 삼산화비스무스(Bi2O3), 일산화망간(MnO)을 부성분으로 구성된 유전체 세라믹 조성물로써, 여러 가지 실험을 수행한 결과 다음과 같은 새로운 조성을 얻는다.
예를들면, 본 발명은 산화니오디움보다 가격이 저렴한 산화세륨을 일부 치환하여, 유전율 및 품질계수를 증가시키고, 공진주파수의 온도계수를 Oppm/℃ 부근으로 근접시킨 조성을 얻을 수 있으며, 상기 여러가지 부성분을 첨가하여 소결온도는 감소시키면서 유전특성을 향상시킬 수 있었다.
상기 조성물을 1250℃∼1375℃범위의 소결온도와 2∼4시간 동안 소결하면 90이상의 유전율과 ±5ppm/℃의 공진주파수 온도계수를 얻을 수 있고, 1GHz 공진주파수에 4500이상의 품질계수를 얻을 수 있다.

Description

마이크로 웨이브용 유전체 세라믹 조성물
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (5)

  1. 본 발명은 산화바륨, 산화납, 산화니오디움, 산화세룸, 이산화티탄을 주성분으로 하고 산화제이동, 산화아연, 삼산화비스무스 및 일산화망간을 부성분으로 하는 유전체 조성물로써 다음과 같은 조성식을 가지는 유전체 세라믹 조성물.
    x(Ba1-∝ㆍPb∝) O-y(Nd2O3(1-β)ㆍCeO2(β))-zTiO2
    여기서, 6≤x≤20, 10≤y≤20, 60≤z≤75(x+y+z=100), 0〈∝≤0.5, 0〈β≤0.2, 0〈CuO≤1WT%, O〈ZuO≤1WT%, O〈Bi2O3≤1WT%, 0〈MnO≤1WT%.
  2. 제1항에 있어서, 산화바륨(BaO) 또는 탄산바륨(BaCO3)을 사용한 유전체 세라믹 조성물.
  3. 제2항에 있어서, 산화납(PbO) 또는 삼산화납(Pb3O4)을 사용한 유전체 세라믹 조성물.
  4. 제1항에 있어서, 조성물을 1250℃∼1375℃, 2시간∼4시간의 소결온도 및 소결시간으로 소결한 유전체 세라믹 조성물.
  5. 제1항에 있어서, 조성물중 1종 또는 2종이상의 부성분을 함께 사용한 유전체 세라믹 조성물.
    ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.
KR1019940033906A 1994-11-16 1994-12-13 마이크로 웨이브용 유전체 세라믹 조성물 KR970008712B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019940033906A KR970008712B1 (ko) 1994-12-13 1994-12-13 마이크로 웨이브용 유전체 세라믹 조성물
US08/559,278 US5688732A (en) 1994-11-16 1995-11-15 Dielectric ceramic compositions for microwave
JP29842695A JP3253835B2 (ja) 1994-11-16 1995-11-16 マイクロウェーブ用誘電体セラミック組成物

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Application Number Priority Date Filing Date Title
KR1019940033906A KR970008712B1 (ko) 1994-12-13 1994-12-13 마이크로 웨이브용 유전체 세라믹 조성물

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KR960022391A true KR960022391A (ko) 1996-07-18
KR970008712B1 KR970008712B1 (ko) 1997-05-28

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