GB967452A - Improvements in or relating to the sealing of high-purity alumina to metal - Google Patents

Improvements in or relating to the sealing of high-purity alumina to metal

Info

Publication number
GB967452A
GB967452A GB2523460A GB2523460A GB967452A GB 967452 A GB967452 A GB 967452A GB 2523460 A GB2523460 A GB 2523460A GB 2523460 A GB2523460 A GB 2523460A GB 967452 A GB967452 A GB 967452A
Authority
GB
United Kingdom
Prior art keywords
tic
tin
metallized
alumina
sintering
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
GB2523460A
Inventor
William Alan Elms
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB2523460A priority Critical patent/GB967452A/en
Publication of GB967452A publication Critical patent/GB967452A/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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • C04B41/5138—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal with a composition mainly composed of Mn and Mo, e.g. for the Moly-manganese method
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/88—Metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

In a method of producing an alumina to metal seal, the alumina is metallized by applying a powdered mixture of TiC on TiN and Mo in a vehicle such as nitrocellulose lacquer and sintering at 1450-1900 DEG C. in an atmosphere of moist hydrogen which has a dew point near 4 DEG C. The metallized layer is coated with Ni which is then brazed to a metal component.ALSO:An alumina body is metallized by applying a powdered mixture of TiC or TiN and Mo in a vehicle such as nitrocellulose lacquer and sintering at 1450-1900 DEG C. in an atmosphere of moist hydrogen which has a dew point over 4 DEG C. The preferred metallizing mixture contains 5-40% of TiC or TiN and the balance Mo and is applied by painting or spraying to give a coating of 20-50 mgms. per sq. cm.ALSO:An alumina body is metallized by applying a powdered mixture of TiC or TiN and Mo in a vehicle such as nitrocellulose lacquer and sintering at 1450-1900 DEG C. in an atmosphere of moist hydrogen which has a dew point over 4 DEG C. The preferred metallizing mixture contains 5-40% of TiC or TiN and the balance Mo and is applied by painting or spraying to give a coating of 20-50 mgms. per sq. cm.
GB2523460A 1960-07-20 1960-07-20 Improvements in or relating to the sealing of high-purity alumina to metal Expired GB967452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2523460A GB967452A (en) 1960-07-20 1960-07-20 Improvements in or relating to the sealing of high-purity alumina to metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2523460A GB967452A (en) 1960-07-20 1960-07-20 Improvements in or relating to the sealing of high-purity alumina to metal

Publications (1)

Publication Number Publication Date
GB967452A true GB967452A (en) 1964-08-19

Family

ID=10224379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2523460A Expired GB967452A (en) 1960-07-20 1960-07-20 Improvements in or relating to the sealing of high-purity alumina to metal

Country Status (1)

Country Link
GB (1) GB967452A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217584A2 (en) * 1985-09-13 1987-04-08 Kabushiki Kaisha Toshiba Highly thermoconductive ceramic substrate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217584A2 (en) * 1985-09-13 1987-04-08 Kabushiki Kaisha Toshiba Highly thermoconductive ceramic substrate
EP0217584A3 (en) * 1985-09-13 1989-03-22 Kabushiki Kaisha Toshiba Highly thermoconductive ceramic substrate

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