BE804319A - Shaped polycrystalline diamond agglomerate prodn - by moulding in a shape which allows for shrinkage - Google Patents

Shaped polycrystalline diamond agglomerate prodn - by moulding in a shape which allows for shrinkage

Info

Publication number
BE804319A
BE804319A BE135202A BE135202A BE804319A BE 804319 A BE804319 A BE 804319A BE 135202 A BE135202 A BE 135202A BE 135202 A BE135202 A BE 135202A BE 804319 A BE804319 A BE 804319A
Authority
BE
Belgium
Prior art keywords
shrinkage
shape
prodn
moulding
allows
Prior art date
Application number
BE135202A
Other languages
French (fr)
Inventor
L F Vereschagin
A Y Preobrazhensky
V A Stepanov
V S Voblikov
Original Assignee
I Fiz Vysokikh Davleny Akademi
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 I Fiz Vysokikh Davleny Akademi filed Critical I Fiz Vysokikh Davleny Akademi
Priority to BE135202A priority Critical patent/BE804319A/en
Publication of BE804319A publication Critical patent/BE804319A/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
    • 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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/20—Carbon compounds
    • B01J27/22—Carbides
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The graphite to be converted to diamond is moulded or machined into a shape which will allow for shrinkage of up to 20-30 (25)% under pressure, and is embedded in a monolithic refractory die, in catalyst powder of fine particle size and heated by electric impulse to 1500 degrees C for 0.1-10 seconds at a pressure of >=80 kbar.
BE135202A 1973-08-31 1973-08-31 Shaped polycrystalline diamond agglomerate prodn - by moulding in a shape which allows for shrinkage BE804319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE135202A BE804319A (en) 1973-08-31 1973-08-31 Shaped polycrystalline diamond agglomerate prodn - by moulding in a shape which allows for shrinkage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE135202A BE804319A (en) 1973-08-31 1973-08-31 Shaped polycrystalline diamond agglomerate prodn - by moulding in a shape which allows for shrinkage

Publications (1)

Publication Number Publication Date
BE804319A true BE804319A (en) 1974-02-28

Family

ID=3842178

Family Applications (1)

Application Number Title Priority Date Filing Date
BE135202A BE804319A (en) 1973-08-31 1973-08-31 Shaped polycrystalline diamond agglomerate prodn - by moulding in a shape which allows for shrinkage

Country Status (1)

Country Link
BE (1) BE804319A (en)

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