GB2353994B - Manufacture of ceramics - Google Patents

Manufacture of ceramics

Info

Publication number
GB2353994B
GB2353994B GB9921446A GB9921446A GB2353994B GB 2353994 B GB2353994 B GB 2353994B GB 9921446 A GB9921446 A GB 9921446A GB 9921446 A GB9921446 A GB 9921446A GB 2353994 B GB2353994 B GB 2353994B
Authority
GB
United Kingdom
Prior art keywords
sintering
ceramics
manufacture
temperature
time
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
GB9921446A
Other versions
GB9921446D0 (en
GB2353994A (en
Inventor
Roger W Whatmore
Deborah Corker
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.)
Cranfield University
Original Assignee
Cranfield University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cranfield University filed Critical Cranfield University
Priority to GB9921446A priority Critical patent/GB2353994B/en
Publication of GB9921446D0 publication Critical patent/GB9921446D0/en
Publication of GB2353994A publication Critical patent/GB2353994A/en
Application granted granted Critical
Publication of GB2353994B publication Critical patent/GB2353994B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/49—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
    • C04B35/491—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/093—Forming inorganic materials
    • H10N30/097—Forming inorganic materials by sintering
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/853—Ceramic compositions
    • H10N30/8548—Lead-based oxides
    • H10N30/8554—Lead-zirconium titanate [PZT] based

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Composite Materials (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

A liquid-phase sintering aid incorporating Cu<SB>2</SB>O and PbO is provided which demonstrates a reduction in the required sintering temperature and sintering time of ceramics. In the case of ferroelectric ceramics based on a lead zirconate-lead titanate (PZT) solid solution, sintered densities comparable to those obtained by conventional sintering at 1260{C for 3 hours are achieved at a low temperature of only 850{C, while sintering time is reduced to 45mins using a 5 weight percentage loading of sintering aid.
GB9921446A 1999-09-11 1999-09-11 Manufacture of ceramics Expired - Fee Related GB2353994B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9921446A GB2353994B (en) 1999-09-11 1999-09-11 Manufacture of ceramics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9921446A GB2353994B (en) 1999-09-11 1999-09-11 Manufacture of ceramics

Publications (3)

Publication Number Publication Date
GB9921446D0 GB9921446D0 (en) 1999-11-10
GB2353994A GB2353994A (en) 2001-03-14
GB2353994B true GB2353994B (en) 2003-12-31

Family

ID=10860716

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9921446A Expired - Fee Related GB2353994B (en) 1999-09-11 1999-09-11 Manufacture of ceramics

Country Status (1)

Country Link
GB (1) GB2353994B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486827A2 (en) * 1990-11-20 1992-05-27 Matsushita Electric Industrial Co., Ltd. Dielectric material and capacitor made from the same
US5680291A (en) * 1994-12-23 1997-10-21 Korea Institute Of Science And Technology Low-temperature sinterable dielectric composition with high dielectric constant and multi-layered ceramic capacitor using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486827A2 (en) * 1990-11-20 1992-05-27 Matsushita Electric Industrial Co., Ltd. Dielectric material and capacitor made from the same
US5680291A (en) * 1994-12-23 1997-10-21 Korea Institute Of Science And Technology Low-temperature sinterable dielectric composition with high dielectric constant and multi-layered ceramic capacitor using the same

Also Published As

Publication number Publication date
GB9921446D0 (en) 1999-11-10
GB2353994A (en) 2001-03-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130911