GB1332675A - Production of beta alumina - Google Patents

Production of beta alumina

Info

Publication number
GB1332675A
GB1332675A GB5296770A GB5296770A GB1332675A GB 1332675 A GB1332675 A GB 1332675A GB 5296770 A GB5296770 A GB 5296770A GB 5296770 A GB5296770 A GB 5296770A GB 1332675 A GB1332675 A GB 1332675A
Authority
GB
United Kingdom
Prior art keywords
alumina
fired
nov
fluorine
product
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
Application number
GB5296770A
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.)
Howmet Aerospace Inc
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Publication of GB1332675A publication Critical patent/GB1332675A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/028—Beta-aluminas
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer

Abstract

1332675 #-Alumina ceramics ALUMINUM CO OF AMERICA 6 Nov 1970 [10 Nov 1969] 52967/70 Heading C1J Beta alumina empirical formula M n O y . 11Al 2 O 3 , is produced by reacting together sufficient amounts of (i) alumina hydrate and/or calcined alumina, (ii) a source of fluorine and (iii) a metal amide other than alumina at 900- 1600‹ C. for 10 minutes to 30 hours to produce amounts of alumina, fluorine and a metal oxide calculated as M x O y wherein x = 1 or 2, y = 1 or 3 and when y = 3, y = 2 defined by the area ABCDEFG of the phase diagram (not illustrated). M may be a mono or divalent metal e.g. LiAg, Pb, Ga, Tl, In, K, Na, Ca, Sr, Cs, La, Mg, Ba and the preferred source of F is AlF 3 . The product which contains at least 85% of Al 2 O 3 has median crystal size 5-15 microns and in all examples was ground with isostearie acid, pressed and fired in the presence of unground starting material. The density of. the fired #-Al 2 O 3 product of the invention ranges from 1À3-3À2g./c.c.
GB5296770A 1969-11-10 1970-11-06 Production of beta alumina Expired GB1332675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87527369A 1969-11-10 1969-11-10

Publications (1)

Publication Number Publication Date
GB1332675A true GB1332675A (en) 1973-10-03

Family

ID=25365503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5296770A Expired GB1332675A (en) 1969-11-10 1970-11-06 Production of beta alumina

Country Status (9)

Country Link
JP (1) JPS5144519B1 (en)
AT (1) AT315127B (en)
BE (1) BE758568A (en)
CH (1) CH542153A (en)
DE (1) DE2055024C2 (en)
FR (1) FR2067065B1 (en)
GB (1) GB1332675A (en)
HU (1) HU162523B (en)
NL (1) NL7016323A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001434A1 (en) * 1977-10-06 1979-04-18 General Electric Company Alumina-based ceramics for core materials
GB2195329A (en) * 1986-09-25 1988-04-07 Lilliwyte Sa Method of preparing ceramic surfaces for wetting thereof by alkali metals
RU2753119C1 (en) * 2020-05-29 2021-08-11 Дмитрий Михайлович Цымбаренко Solid electrolyte for measuring activity of thallium in gas phase, method for its production and device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284579A1 (en) * 1974-09-16 1976-04-09 Comp Generale Electricite METHOD OF MANUFACTURING PARTS IN ALUMINA B ALKALINE
FR2284578A1 (en) * 1974-09-16 1976-04-09 Comp Generale Electricite Pure alkaline beta alumina for solid electrolytes - in electrochemical generators is made from alumina, sodium carbonate and cryolite
DE102005052380B4 (en) * 2005-10-31 2008-03-13 Calsitherm Silikatbaustoffe Gmbh High-temperature-resistant aluminate thermal insulation material, process for its preparation and its use
DE102009055723B4 (en) 2009-11-26 2012-10-31 Calsitherm Verwaltungs Gmbh Process for the preparation of alkali-resistant alkaline earth-aluminum thermal insulation material, itself and its use.
DE202012103050U1 (en) 2012-08-13 2012-09-03 Promat Gmbh Thermal insulation moldings

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261699A (en) * 1966-07-19 Table ii
US1263708A (en) * 1917-03-02 1918-04-23 Norton Co PRODUCT CONTAINING β-ALUMINA AND PROCESS OF PREPARING THE SAME.
US2154318A (en) * 1935-12-19 1939-04-11 Carborundum Co Refractory and method of making
US2454227A (en) * 1947-12-26 1948-11-16 Shell Dev Beta-alumina catalysts
DE1250331B (en) * 1961-09-26 1967-09-14 Corhart Refractories Company Louisville Ky (V St A) Process for the manufacture of refractory cast iron materials
US3404036A (en) * 1965-10-22 1968-10-01 Ford Motor Co Energy conversion device comprising a solid crystalline electrolyte and a solid reaction zone separator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001434A1 (en) * 1977-10-06 1979-04-18 General Electric Company Alumina-based ceramics for core materials
GB2195329A (en) * 1986-09-25 1988-04-07 Lilliwyte Sa Method of preparing ceramic surfaces for wetting thereof by alkali metals
GB2195329B (en) * 1986-09-25 1990-10-24 Lilliwyte Sa Method of preparing ceramic surfaces for wetting thereof by alkali metals
RU2753119C1 (en) * 2020-05-29 2021-08-11 Дмитрий Михайлович Цымбаренко Solid electrolyte for measuring activity of thallium in gas phase, method for its production and device

Also Published As

Publication number Publication date
DE2055024A1 (en) 1971-07-22
CH542153A (en) 1973-09-30
FR2067065A1 (en) 1971-08-13
JPS5144519B1 (en) 1976-11-29
HU162523B (en) 1973-03-28
FR2067065B1 (en) 1973-12-28
AT315127B (en) 1974-05-10
NL7016323A (en) 1971-05-12
BE758568A (en) 1971-05-06
DE2055024C2 (en) 1983-04-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee