GB2402937B - Microwave dielectric ceramic composition,method of manufacture thereof and devices comprising the same - Google Patents

Microwave dielectric ceramic composition,method of manufacture thereof and devices comprising the same

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Publication number
GB2402937B
GB2402937B GB0423302A GB0423302A GB2402937B GB 2402937 B GB2402937 B GB 2402937B GB 0423302 A GB0423302 A GB 0423302A GB 0423302 A GB0423302 A GB 0423302A GB 2402937 B GB2402937 B GB 2402937B
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GB
United Kingdom
Prior art keywords
manufacture
devices
same
dielectric ceramic
ceramic composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0423302A
Other versions
GB0423302D0 (en
GB2402937A (en
Inventor
Thomas Sebastian Mailadil
Santha Narayana Iyer
Isuhak Naseemabeevi Jawahar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
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Filing date
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Publication of GB0423302D0 publication Critical patent/GB0423302D0/en
Publication of GB2402937A publication Critical patent/GB2402937A/en
Application granted granted Critical
Publication of GB2402937B publication Critical patent/GB2402937B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • C04B35/01—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
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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
    • C04B35/47—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 strontium titanates
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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
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
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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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/6261—Milling
    • C04B35/6262—Milling of calcined, sintered clinker or 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3213—Strontium 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
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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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
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, 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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
    • C04B2235/767—Hexagonal symmetry, e.g. beta-Si3N4, beta-Sialon, alpha-SiC or hexa-ferrites
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
    • C04B2235/768—Perovskite structure ABO3
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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    • C04B2235/77—Density
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
    • C04B2235/81—Materials characterised by the absence of phases other than the main phase, i.e. single phase materials

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Ceramic Capacitors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
GB0423302A 2002-03-21 2002-03-21 Microwave dielectric ceramic composition,method of manufacture thereof and devices comprising the same Expired - Fee Related GB2402937B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2002/000051 WO2003080535A1 (en) 2002-03-21 2002-03-21 Microwave dielectric ceramic composition, method of manufacture thereof and devices comprising the same

Publications (3)

Publication Number Publication Date
GB0423302D0 GB0423302D0 (en) 2004-11-24
GB2402937A GB2402937A (en) 2004-12-22
GB2402937B true GB2402937B (en) 2006-06-28

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GB0423302A Expired - Fee Related GB2402937B (en) 2002-03-21 2002-03-21 Microwave dielectric ceramic composition,method of manufacture thereof and devices comprising the same

Country Status (4)

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JP (1) JP4326346B2 (en)
AU (1) AU2002242938A1 (en)
GB (1) GB2402937B (en)
WO (1) WO2003080535A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8734713B2 (en) 2009-07-03 2014-05-27 Universiti Putra Malaysia Energy storage ceramic dielectric component and method thereof
CN112266232A (en) * 2020-08-03 2021-01-26 杭州电子科技大学 Low-dielectric microwave dielectric ceramic material suitable for 5G millimeter wave communication application and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670409A (en) * 1984-11-27 1987-06-02 Kyocera Corporation Dielectric ceramic material
JPH107457A (en) * 1996-06-19 1998-01-13 Tokin Corp Dielectric porcelain composition
EP1422207A1 (en) * 2001-08-09 2004-05-26 Hitoshi Ohsato Microwave dielectric composition and method for producing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670409A (en) * 1984-11-27 1987-06-02 Kyocera Corporation Dielectric ceramic material
JPH107457A (en) * 1996-06-19 1998-01-13 Tokin Corp Dielectric porcelain composition
EP1422207A1 (en) * 2001-08-09 2004-05-26 Hitoshi Ohsato Microwave dielectric composition and method for producing the same

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
A.P. PIVOVAROVA ET AL.: INORGANIC MATERIALS,vol. 35, no.,12, -1999 pages 1288-1290,XP008011028 abstract *
C.VINEIS ET AL.: MATERIALS RESEARCH BULLETIN, vol. 31, no.5, - 1996 page 431-437, XP002222068 cited in the application abstract *
Hwang et al., J. Catalysis, vol. 193, pages 40-48 (2000) *
M.NANOT ET AL,: J.SOLID STATE CHEM.,vol.11,no.4, -1974 pages 272-284, XP008011027 page 279-page281 *
Okawa et al., Jpn. J. Appl. Phys., vol. 40, 5779-5782 (2001) *

Also Published As

Publication number Publication date
JP2005520773A (en) 2005-07-14
GB0423302D0 (en) 2004-11-24
JP4326346B2 (en) 2009-09-02
WO2003080535A1 (en) 2003-10-02
GB2402937A (en) 2004-12-22
AU2002242938A1 (en) 2003-10-08

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150321