GB1192096A - Improvements in or relating to ceramics - Google Patents

Improvements in or relating to ceramics

Info

Publication number
GB1192096A
GB1192096A GB758268A GB758268A GB1192096A GB 1192096 A GB1192096 A GB 1192096A GB 758268 A GB758268 A GB 758268A GB 758268 A GB758268 A GB 758268A GB 1192096 A GB1192096 A GB 1192096A
Authority
GB
United Kingdom
Prior art keywords
oxide
heating
gel
hours
water
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
GB758268A
Inventor
Dennis George
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB758268A priority Critical patent/GB1192096A/en
Priority to FR6903784A priority patent/FR2001989A1/fr
Priority to NL6902417A priority patent/NL6902417A/xx
Priority to DE19691907395 priority patent/DE1907395A1/en
Publication of GB1192096A publication Critical patent/GB1192096A/en
Expired 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

Landscapes

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

Abstract

1,192,096. Oxide bodies; metallic oxides. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 13 Feb., 1969 [15 Feb., 1968], No. 7582/68. Headings C1A, C1J and C1N. Oxide bodies are made by dewatering a hydrous oxide sol to form a gel, heating the gel to decompose it to the oxide but not to sinter it, forming the oxide into a green body and sintering the green body at 1700-1900‹ C. Suitable sols are those of the oxides of thorium, cerium, titanium, hafnium, zirconium and aluminium and are stabilized by adding a solution of a thermally decomposable salt of magnesium, calcium or yttrium to the oxide sol. A solution of yttrium nitrate is added to a sol containing 500 gm. of colloidal thoria per litre of water to incorporate 5-15 mole per cent of yttria in the product. Water is removed by heating at 100‹ C. and the glassy gel formed is decomposed at 950‹ C. The oxide formed is ball-milled in carbon tetrachloride and the milled powder dried at 50‹ C. and formed into a tube by isostatic pressing at 30,000 lbs per square inch. The formed tube is sintered at 1700‹ C. for 2 hours, fully oxidized in air at 1400‹ C. for 4 hours and then reduced by heating at 1000‹ C. for 4 hours in hydrogen saturated with water vapour at room temperature. When alumina is used the alumina gel is decomposed by heating at 1100‹ C.
GB758268A 1968-02-15 1968-02-15 Improvements in or relating to ceramics Expired GB1192096A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB758268A GB1192096A (en) 1968-02-15 1968-02-15 Improvements in or relating to ceramics
FR6903784A FR2001989A1 (en) 1968-02-15 1969-02-14
NL6902417A NL6902417A (en) 1968-02-15 1969-02-14
DE19691907395 DE1907395A1 (en) 1968-02-15 1969-02-14 Process for the production of ceramic bodies, in particular for the preparation of oxide bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB758268A GB1192096A (en) 1968-02-15 1968-02-15 Improvements in or relating to ceramics

Publications (1)

Publication Number Publication Date
GB1192096A true GB1192096A (en) 1970-05-20

Family

ID=9835911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB758268A Expired GB1192096A (en) 1968-02-15 1968-02-15 Improvements in or relating to ceramics

Country Status (4)

Country Link
DE (1) DE1907395A1 (en)
FR (1) FR2001989A1 (en)
GB (1) GB1192096A (en)
NL (1) NL6902417A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349456A (en) * 1976-04-22 1982-09-14 Minnesota Mining And Manufacturing Company Non-vitreous ceramic metal oxide microcapsules and process for making same
GB2122590A (en) * 1982-06-26 1984-01-18 Unilever Plc Adsorbent refractory oxides
GB2166424A (en) * 1984-11-01 1986-05-08 Atomic Energy Authority Uk Synthetic rock materials
EP0184900A1 (en) * 1984-11-01 1986-06-18 United Kingdom Atomic Energy Authority Process for the preparation of synthetic rock material and precursor therefor
US8074472B2 (en) 2007-07-31 2011-12-13 Zircoa Inc. Grinding beads and method of producing the same
CN108585798A (en) * 2018-05-09 2018-09-28 安徽中航名坤新材料科技有限公司 A kind of nano-porous alumina aeroge ceramic bead and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293507A (en) * 1978-05-26 1981-10-06 United Kingdom Atomic Energy Authority Preparation of shaped bodies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349456A (en) * 1976-04-22 1982-09-14 Minnesota Mining And Manufacturing Company Non-vitreous ceramic metal oxide microcapsules and process for making same
GB2122590A (en) * 1982-06-26 1984-01-18 Unilever Plc Adsorbent refractory oxides
GB2166424A (en) * 1984-11-01 1986-05-08 Atomic Energy Authority Uk Synthetic rock materials
EP0184900A1 (en) * 1984-11-01 1986-06-18 United Kingdom Atomic Energy Authority Process for the preparation of synthetic rock material and precursor therefor
AU581938B2 (en) * 1984-11-01 1989-03-09 United Kingdom Atomic Energy Authority Improvements in or relating to materials
US8074472B2 (en) 2007-07-31 2011-12-13 Zircoa Inc. Grinding beads and method of producing the same
CN108585798A (en) * 2018-05-09 2018-09-28 安徽中航名坤新材料科技有限公司 A kind of nano-porous alumina aeroge ceramic bead and preparation method thereof

Also Published As

Publication number Publication date
FR2001989A1 (en) 1969-10-03
DE1907395A1 (en) 1969-10-09
NL6902417A (en) 1969-08-19

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Legal Events

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