GB1070324A - Process for the manufacture of hard materials rich in boron - Google Patents

Process for the manufacture of hard materials rich in boron

Info

Publication number
GB1070324A
GB1070324A GB1846564A GB1846564A GB1070324A GB 1070324 A GB1070324 A GB 1070324A GB 1846564 A GB1846564 A GB 1846564A GB 1846564 A GB1846564 A GB 1846564A GB 1070324 A GB1070324 A GB 1070324A
Authority
GB
United Kingdom
Prior art keywords
inert atmosphere
boron carbide
boron
carbide
manufacture
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
GB1846564A
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.)
Elektroschmelzwerk Kempten GmbH
Original Assignee
Elektroschmelzwerk Kempten GmbH
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
Priority claimed from DEE26282A external-priority patent/DE1229505B/en
Application filed by Elektroschmelzwerk Kempten GmbH filed Critical Elektroschmelzwerk Kempten GmbH
Publication of GB1070324A publication Critical patent/GB1070324A/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
    • C04B35/515—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
    • C04B35/56—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 carbides or oxycarbides
    • C04B35/563—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 carbides or oxycarbides based on boron carbide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/02—Boron; Borides
    • C01B35/04—Metal borides

Landscapes

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

Abstract

An alloy containing 7-20% Al, 12-16% C, and the balance of B, is prepared by heating powdered boron carbide and Al in an inert atmosphere at a temperature of at least 1000 DEG C., preferably 1400-1500 DEG C., and at atmospheric pressure. The boron carbide may have a formula from B2.65 C to B5 C, and the Al preferably has an oxide content below 5%. The amount of Al used may be 2-3 times that required, and the product may be leached with mineral acid, e.g. HCl, to remove excess Al, and any Al carbide. The inert atmosphere may be a current of H2 or Ar, and should not contain CO.ALSO:A compound containing 7-20% Al, 12-16% C, and the balance of B, is prepared by heating powdered boron carbide and Al in an inert atmosphere at a temperature of at least 1000 DEG C., preferably 1400-1500 DEG C., and at atmospheric pressure. The boron carbide may have a formula from B2.65C to B5C, and the Al preferably has an oxide content below 5%. The amount of Al used may be 2-3 times that which will react, and the product may be leached with mineral acid, e.g. HCl, to remove excess Al, and any Al carbide. The inert atmosphere may be a current of H2 or Ar, and should not contain CO.
GB1846564A 1963-05-03 1964-05-04 Process for the manufacture of hard materials rich in boron Expired GB1070324A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEE0024782 1963-05-03
DEE26282A DE1229505B (en) 1964-01-23 1964-01-23 Process for the preparation of alkaline earth metal borides and carbides

Publications (1)

Publication Number Publication Date
GB1070324A true GB1070324A (en) 1967-06-01

Family

ID=25973166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1846564A Expired GB1070324A (en) 1963-05-03 1964-05-04 Process for the manufacture of hard materials rich in boron

Country Status (3)

Country Link
BE (1) BE647369A (en)
GB (1) GB1070324A (en)
SE (2) SE305435B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000557A2 (en) * 1985-07-26 1987-01-29 Washington Research Foundation A multipurpose boron carbide-aluminum composite and its manufacture via the control of the microstructure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000557A2 (en) * 1985-07-26 1987-01-29 Washington Research Foundation A multipurpose boron carbide-aluminum composite and its manufacture via the control of the microstructure
WO1987000557A3 (en) * 1985-07-26 1988-09-07 Washington Res Found A multipurpose boron carbide-aluminum composite and its manufacture via the control of the microstructure

Also Published As

Publication number Publication date
SE305435B (en) 1968-10-28
SE316752B (en) 1969-11-03
BE647369A (en) 1964-10-30

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