FR2426030A1 - Beta-alumina ceramic articles - isostatically pressurised at high temp. and during cooling for increased durability as solid electrolyte - Google Patents

Beta-alumina ceramic articles - isostatically pressurised at high temp. and during cooling for increased durability as solid electrolyte

Info

Publication number
FR2426030A1
FR2426030A1 FR7814484A FR7814484A FR2426030A1 FR 2426030 A1 FR2426030 A1 FR 2426030A1 FR 7814484 A FR7814484 A FR 7814484A FR 7814484 A FR7814484 A FR 7814484A FR 2426030 A1 FR2426030 A1 FR 2426030A1
Authority
FR
France
Prior art keywords
beta
al2o3
article
sintering
furnace
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.)
Withdrawn
Application number
FR7814484A
Other languages
French (fr)
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.)
Chloride Silent Power Ltd
Original Assignee
Chloride Silent Power Ltd
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 Chloride Silent Power Ltd filed Critical Chloride Silent Power Ltd
Priority to FR7814484A priority Critical patent/FR2426030A1/en
Publication of FR2426030A1 publication Critical patent/FR2426030A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
    • H01M10/3909—Sodium-sulfur cells
    • H01M10/3918—Sodium-sulfur cells characterised by the electrolyte
    • 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
    • C04B35/10—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 aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/113—Fine ceramics based on beta-aluminium oxide
    • 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
    • C04B35/645—Pressure sintering
    • C04B35/6455—Hot isostatic pressing
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A beta-Al2O3 ceramic article is mfd. by (a) compacting finely divided particles of beta-Al2O3 or materials reacting to form beta-Al2O3 to form a homogeneous green compact, (b) sintering to form an impervious polycrystalline ceramic, (c) isostatically pressurising at 1200-1550 degrees C. at >5000 p.s.i. (d) cooling under pressure to 1200 degrees C. and (e) releasing the pressure. Pref. sintering is by zone sintering, the green compact passing through a tubular furnace at a rate such that each part of the article is in the sintering zone for 12s-2 min. Air is passed through the furnace in the same direction as the article to carry volatile constituents through the furnace with the article, maintaining an Na2O-rich atmos. in the furnace, to form an impervious, fine grained polycrystalline ceramic having uniform density >3.2 g/cm3. The pressurisation-cooling treatment increases the durability of the beta-Al2O3 when used as electrolyte in NaS cells. Test results indicate that the likelihood of the cell surviving 1000 cycles is increased by a factor of at least 3.
FR7814484A 1978-05-16 1978-05-16 Beta-alumina ceramic articles - isostatically pressurised at high temp. and during cooling for increased durability as solid electrolyte Withdrawn FR2426030A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7814484A FR2426030A1 (en) 1978-05-16 1978-05-16 Beta-alumina ceramic articles - isostatically pressurised at high temp. and during cooling for increased durability as solid electrolyte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7814484A FR2426030A1 (en) 1978-05-16 1978-05-16 Beta-alumina ceramic articles - isostatically pressurised at high temp. and during cooling for increased durability as solid electrolyte

Publications (1)

Publication Number Publication Date
FR2426030A1 true FR2426030A1 (en) 1979-12-14

Family

ID=9208285

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814484A Withdrawn FR2426030A1 (en) 1978-05-16 1978-05-16 Beta-alumina ceramic articles - isostatically pressurised at high temp. and during cooling for increased durability as solid electrolyte

Country Status (1)

Country Link
FR (1) FR2426030A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036654A5 (en) * 1969-03-03 1970-12-24 Asea Ab
US3562371A (en) * 1968-10-16 1971-02-09 Corning Glass Works High temperature gas isostatic pressing of crystalline bodies having impermeable surfaces
FR2106793A5 (en) * 1970-09-24 1972-05-05 Corning Glass Works High temperature gas pressing ceramics and - metals
FR2164799A1 (en) * 1971-12-22 1973-08-03 Philips Nv
US3795723A (en) * 1972-03-29 1974-03-05 Shell Oil Co Beta alumina production
GB1375167A (en) * 1970-12-29 1974-11-27
FR2277790A1 (en) * 1974-07-11 1976-02-06 Electricity Council Sintering beta alumina ceramic mouldings - by feeding them through a furnace with a concurrent convection gas flow
FR2309490A1 (en) * 1975-05-02 1976-11-26 Eastman Kodak Co PROCESS FOR PREPARING AN ALUMINA-BETA COMPOSITION

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562371A (en) * 1968-10-16 1971-02-09 Corning Glass Works High temperature gas isostatic pressing of crystalline bodies having impermeable surfaces
FR2036654A5 (en) * 1969-03-03 1970-12-24 Asea Ab
GB1300864A (en) * 1969-03-03 1972-12-20 Asea Ab Method of sintering powder bodies
FR2106793A5 (en) * 1970-09-24 1972-05-05 Corning Glass Works High temperature gas pressing ceramics and - metals
GB1375167A (en) * 1970-12-29 1974-11-27
FR2164799A1 (en) * 1971-12-22 1973-08-03 Philips Nv
US3795723A (en) * 1972-03-29 1974-03-05 Shell Oil Co Beta alumina production
FR2277790A1 (en) * 1974-07-11 1976-02-06 Electricity Council Sintering beta alumina ceramic mouldings - by feeding them through a furnace with a concurrent convection gas flow
FR2309490A1 (en) * 1975-05-02 1976-11-26 Eastman Kodak Co PROCESS FOR PREPARING AN ALUMINA-BETA COMPOSITION

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