GB899398A - A method of producing aluminium nitride which is stable when exposed to moist air, and the use of the same for producing dense compacts - Google Patents

A method of producing aluminium nitride which is stable when exposed to moist air, and the use of the same for producing dense compacts

Info

Publication number
GB899398A
GB899398A GB3605660A GB3605660A GB899398A GB 899398 A GB899398 A GB 899398A GB 3605660 A GB3605660 A GB 3605660A GB 3605660 A GB3605660 A GB 3605660A GB 899398 A GB899398 A GB 899398A
Authority
GB
United Kingdom
Prior art keywords
producing
stable
aluminium nitride
moist air
ain
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
GB3605660A
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.)
Deutsche Edelstahlwerke AG
Original Assignee
Deutsche Edelstahlwerke AG
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 Deutsche Edelstahlwerke AG filed Critical Deutsche Edelstahlwerke AG
Publication of GB899398A publication Critical patent/GB899398A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/072—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with aluminium
    • C01B21/0728—After-treatment, e.g. grinding, purification
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/581—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on aluminium nitride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Ceramic Products (AREA)

Abstract

An aluminium nitride which is stable in moist air is obtained from an AIN, which has been fully annealed by heating in the presence of N2 at atmospheric pressure, by pulverizing, e.g. using Al2O3 balls, and reheating to above 1600 DEG C. in N2 at subatmospheric pressure, e.g. between 10 and 50 mm. Hg. The N2 may be present as an atmosphere or a current of gas. The annealed AIN may be obtained by heating AIN produced by heating Al2O3 and C in NH3 or N2, or by heating Al in N2. The stable pulverised AIN can be hot-pressed at temperatures of 1800 DEG -1900 DEG C. and pressures above 100 Kg./sq. cm. (e.g. 300 Kg./sq. cm.) to form a compact body.
GB3605660A 1959-12-22 1960-10-20 A method of producing aluminium nitride which is stable when exposed to moist air, and the use of the same for producing dense compacts Expired GB899398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED32179A DE1106296B (en) 1959-12-22 1959-12-22 Process for the production of hot-pressable aluminum nitride that is resistant to humid air

Publications (1)

Publication Number Publication Date
GB899398A true GB899398A (en) 1962-06-20

Family

ID=7041212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3605660A Expired GB899398A (en) 1959-12-22 1960-10-20 A method of producing aluminium nitride which is stable when exposed to moist air, and the use of the same for producing dense compacts

Country Status (3)

Country Link
DE (1) DE1106296B (en)
GB (1) GB899398A (en)
NL (1) NL259366A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194635A (en) * 1961-07-18 1965-07-13 Norton Co Method for the production of aluminum refractory material
US5049367A (en) * 1988-10-05 1991-09-17 Sumitomo Chemical Co., Limited Aluminum nitride powder and process for preparation of the same
JP2967094B2 (en) * 1995-11-02 1999-10-25 工業技術院長 Aluminum nitride sintered body and method for producing aluminum nitride powder

Also Published As

Publication number Publication date
NL259366A (en)
DE1106296B (en) 1961-05-10

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