GB1447794A - Process for the preparation of a cubic boron nitride layer bonded directly to a supporting high elastic modulus mass - Google Patents

Process for the preparation of a cubic boron nitride layer bonded directly to a supporting high elastic modulus mass

Info

Publication number
GB1447794A
GB1447794A GB4985473A GB4985473A GB1447794A GB 1447794 A GB1447794 A GB 1447794A GB 4985473 A GB4985473 A GB 4985473A GB 4985473 A GB4985473 A GB 4985473A GB 1447794 A GB1447794 A GB 1447794A
Authority
GB
United Kingdom
Prior art keywords
boron nitride
pressure
cubic boron
less
elastic modulus
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
GB4985473A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1447794A publication Critical patent/GB1447794A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
    • B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F3/26—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • 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
    • C04B35/583—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 boron nitride
    • C04B35/5831—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 boron nitride based on cubic boron nitrides or Wurtzitic boron nitrides, including crystal structure transformation of powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/0605—Composition of the material to be processed
    • B01J2203/0645—Boronitrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/065—Composition of the material produced
    • B01J2203/066—Boronitrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/0675—Structural or physico-chemical features of the materials processed
    • B01J2203/0685—Crystal sintering

Abstract

1447794 Abrasive articles GENERAL ELECTRIC CO 25 Oct 1973 [1 Nov 1972] 49854/73 Heading C4V A composite abrasive body is obtained by (a) placing in a particulate metal container in contiguous layers a mass of cubic boron nitride crystals, metal to provide an alloy having a critical temperature of less than 1500‹ C. for wetting capillaries in the mass of cubic boron nitride and a body of material having an elastic modulus of at least 60,000,000 p.s.i., (b) disposing the metal container and its contents in a pressure-transmitting medium, (c) applying substantially isostatic abrasive to the metal container and the contents via the pressure-transmitting medium, the pressure being greater than 20,000 p.s.i. and less than the cubic boron nitride-stable pressure at the operating temperatures, the application of pressure being sufficiently long to substantially stabilize the dimensions of the metal container and the contents at least in planes through the metal container parallel to the interface between the metal and the cubic boron nitride layers, (d) simultaneously applying pressure to and heating the container and contents for a time sufficient to permit infusion of the alloy into the mass of cubic boron nitride crystals, the pressure being at least 500 p.s.i. and less than the cubic boron nitride-stable pressure at the operating temperatures and the heating being sufficient to exceed the critical wetting temperature of the alloy, (e) maintaining substantially at a static pressure the container and contents during cooling, and (f) recovering the resulting composite abrasive body in which a layer of metalbonded cubic boron nitride crystals is directly bonded to the body of material of high elastic modulus. The material having the elastic modulus of at least 60,000,000 p.s.i. may be sintered silicon carbide. The pressure-transmitting medium may be particulate and may consist of particles of hexagonal boron nitride. Suitable bonding metal alloys are NiAl (80- 90% by weight Ni), CoAl (less than 20% by weight Co), FeAl (less than 15% by weight Fe) and NiCr (less than 25% by weight Cr).
GB4985473A 1972-11-01 1973-10-25 Process for the preparation of a cubic boron nitride layer bonded directly to a supporting high elastic modulus mass Expired GB1447794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30280972A 1972-11-01 1972-11-01

Publications (1)

Publication Number Publication Date
GB1447794A true GB1447794A (en) 1976-09-02

Family

ID=23169296

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4985473A Expired GB1447794A (en) 1972-11-01 1973-10-25 Process for the preparation of a cubic boron nitride layer bonded directly to a supporting high elastic modulus mass

Country Status (7)

Country Link
JP (1) JPS5759228B2 (en)
BE (1) BE806779A (en)
CH (1) CH590108A5 (en)
DE (1) DE2353324A1 (en)
FR (1) FR2204482B1 (en)
GB (1) GB1447794A (en)
SE (1) SE394107B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019461A1 (en) * 1979-05-16 1980-11-26 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive bodies
NL1016112C2 (en) * 2000-09-06 2002-03-07 Tno Gradually hard metal body such as punching tools and method for producing them.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4177845B2 (en) 2004-01-08 2008-11-05 住友電工ハードメタル株式会社 Cubic boron nitride sintered body
JP2006347850A (en) * 2005-06-20 2006-12-28 Sumitomo Electric Ind Ltd Cubic system boron nitride sintered compact and method of manufacturing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL174715C (en) * 1971-07-01 1984-08-01 Gen Electric METHOD FOR MANUFACTURING AN ABRASIVE BODY AND CUTTING TOOL WITH AN INSERT MADE ACCORDING TO THIS METHOD.
JPS5243846A (en) * 1975-10-03 1977-04-06 Senichi Masuda Device for electrostatic powder coating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019461A1 (en) * 1979-05-16 1980-11-26 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive bodies
NL1016112C2 (en) * 2000-09-06 2002-03-07 Tno Gradually hard metal body such as punching tools and method for producing them.
WO2002020863A1 (en) * 2000-09-06 2002-03-14 Nederlandse Organisatie Voor Toegepast-Natuur-Wetenschappelijk Onderzoek Tno Hard metal body with hardness gradient, such as punching tools

Also Published As

Publication number Publication date
FR2204482B1 (en) 1977-08-12
DE2353324A1 (en) 1974-05-09
JPS4997806A (en) 1974-09-17
SE394107B (en) 1977-06-06
CH590108A5 (en) 1977-07-29
FR2204482A1 (en) 1974-05-24
BE806779A (en) 1974-02-15
DE2353324C2 (en) 1988-07-21
JPS5759228B2 (en) 1982-12-14

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Legal Events

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

Effective date: 19921025