GB993745A - Preparation of beryllia foam structures - Google Patents

Preparation of beryllia foam structures

Info

Publication number
GB993745A
GB993745A GB1693162A GB1693162A GB993745A GB 993745 A GB993745 A GB 993745A GB 1693162 A GB1693162 A GB 1693162A GB 1693162 A GB1693162 A GB 1693162A GB 993745 A GB993745 A GB 993745A
Authority
GB
United Kingdom
Prior art keywords
slip
blowing agent
destabilant
ceramic
beryllia
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
GB1693162A
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.)
National Beryllia Corp
Original Assignee
National Beryllia Corp
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 National Beryllia Corp filed Critical National Beryllia Corp
Publication of GB993745A publication Critical patent/GB993745A/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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

BeO ceramic is made by providing a slip which is substantially aqueous in base and contains BeO powder of less than 100 U.S.S. mesh, an organic binding agent capable of forming a gelatinous suspension in water and a blowing agent, with or without a destabilant for the blowing agent, heating the slip to a temperature above room temperature such that the blowing agent decomposes whilst the binding agent retains its effectiveness to provide an expanded and set solidified structure and thereafter sintering the set structure. Specified binding agents are tragacanth gum, carboxy methyl cellulose, hydroxyethyl cellulose and glucose. Conventional blowing agents which decompose at 30-120 DEG C. are listed. NH4OH may be used as destabilant for H2O2. The porosity of the ceramic may be 70% by volume. The slip may be cured at 30-120 DEG C. and sintered at 1850 DEG C.
GB1693162A 1961-05-02 1962-05-02 Preparation of beryllia foam structures Expired GB993745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10704261A 1961-05-02 1961-05-02

Publications (1)

Publication Number Publication Date
GB993745A true GB993745A (en) 1965-06-02

Family

ID=22314543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1693162A Expired GB993745A (en) 1961-05-02 1962-05-02 Preparation of beryllia foam structures

Country Status (1)

Country Link
GB (1) GB993745A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981823A (en) * 1985-11-27 1991-01-01 Cbl Ceramics Limited Beryllium oxide based ceramics
CN116514575A (en) * 2023-05-05 2023-08-01 郑州大学 Beryllium oxide electrode material, beryllium-beryllium oxide cermet and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981823A (en) * 1985-11-27 1991-01-01 Cbl Ceramics Limited Beryllium oxide based ceramics
CN116514575A (en) * 2023-05-05 2023-08-01 郑州大学 Beryllium oxide electrode material, beryllium-beryllium oxide cermet and preparation method thereof

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