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IE41288B1 - Improvements in diamonds - Google Patents

Improvements in diamonds

Info

Publication number
IE41288B1
IE41288B1 IE789/75A IE78975A IE41288B1 IE 41288 B1 IE41288 B1 IE 41288B1 IE 789/75 A IE789/75 A IE 789/75A IE 78975 A IE78975 A IE 78975A IE 41288 B1 IE41288 B1 IE 41288B1
Authority
IE
Ireland
Prior art keywords
diamond
pressure
charge
region
temperature
Prior art date
Application number
IE789/75A
Other versions
IE41288L (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IE41288L publication Critical patent/IE41288L/en
Publication of IE41288B1 publication Critical patent/IE41288B1/en

Links

Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • 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
    • B01J2203/062—Diamond
    • 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
    • B01J2203/0655—Diamond
    • 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
    • B01J2203/069—Recrystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

1500817 Work-hardened diamond GENERAL ELECTRIC CO 23 April 1975 [30 May 1974] 16785/75 Heading C1A A work-hardened diamond is prepared and mounted by a process comprising (a) filling an enclosure with a charge composed solely of discrete diamond crystals or at least one diamond crystal together with loose crystalline diamond or cubic boron nitride as embedment material therefor, (b) subjecting said enclosure and said charge to the simultaneous application of pressure and temperature conditions located in the region of plastic deformation as shown in the carbon phase diagram of Fig. I for a period in excess of 1 minute, (c) reducing the temperature to below 50C, (d) reducing the pressure to atmospheric pressure, (e) recovering the diamond content having deformation lamallae introduced therein from said charge. The charge may be solely diamond crystals of 5 to 500 micrometres size range. Pressure and temperature conditions simultaneously applied may be in the diamond-stable region of the carbon phase diagram, a maximum pressure of 55 kilobars and a maximum temperature of 1500C being preferred, or may be in the plastic deformation region of the diagram. [GB1500817A]
IE789/75A 1974-05-30 1975-04-08 Improvements in diamonds IE41288B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47471974A 1974-05-30 1974-05-30

Publications (2)

Publication Number Publication Date
IE41288L IE41288L (en) 1975-11-30
IE41288B1 true IE41288B1 (en) 1979-12-05

Family

ID=23884679

Family Applications (1)

Application Number Title Priority Date Filing Date
IE789/75A IE41288B1 (en) 1974-05-30 1975-04-08 Improvements in diamonds

Country Status (12)

Country Link
JP (1) JPS5713488B2 (en)
BE (1) BE829717A (en)
CA (1) CA1091938A (en)
CH (1) CH601105A5 (en)
DE (1) DE2519116C2 (en)
FR (1) FR2275405A1 (en)
GB (1) GB1500817A (en)
IE (1) IE41288B1 (en)
IT (1) IT1038378B (en)
NL (1) NL7506342A (en)
SE (1) SE417161B (en)
ZA (1) ZA752274B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55136114A (en) * 1979-02-08 1980-10-23 De Beers Ind Diamond Diamond grain to which metal is combined and its preparation
JPS59168957A (en) * 1983-03-17 1984-09-22 Akai Electric Co Ltd Repeated reproducing device of tape player or the like
US4931068A (en) * 1988-08-29 1990-06-05 Exxon Research And Engineering Company Method for fabricating fracture-resistant diamond and diamond composite articles
EP1537259B1 (en) 2002-09-06 2010-11-24 Element Six Limited Method for altering the colour of a single crystal cvd diamond and diamond layer produced thereby

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574580A (en) * 1968-11-08 1971-04-13 Atomic Energy Commission Process for producing sintered diamond compact and products
FR2026389A1 (en) * 1968-12-18 1970-09-18 Hall Howard

Also Published As

Publication number Publication date
CH601105A5 (en) 1978-06-30
SE417161B (en) 1981-03-02
JPS515293A (en) 1976-01-16
SE7506226L (en) 1975-12-01
IT1038378B (en) 1979-11-20
NL7506342A (en) 1975-12-02
FR2275405A1 (en) 1976-01-16
BE829717A (en) 1975-09-15
DE2519116A1 (en) 1975-12-18
ZA752274B (en) 1976-03-31
IE41288L (en) 1975-11-30
CA1091938A (en) 1980-12-23
FR2275405B1 (en) 1979-04-06
GB1500817A (en) 1978-02-15
DE2519116C2 (en) 1984-12-20
JPS5713488B2 (en) 1982-03-17

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