IE35188L - Synthetic diamond production - Google Patents

Synthetic diamond production

Info

Publication number
IE35188L
IE35188L IE56071A IE56071A IE35188L IE 35188 L IE35188 L IE 35188L IE 56071 A IE56071 A IE 56071A IE 56071 A IE56071 A IE 56071A IE 35188 L IE35188 L IE 35188L
Authority
IE
Ireland
Prior art keywords
graphite
temperature
diamond
carbon
calcium oxide
Prior art date
Application number
IE56071A
Other versions
IE35188B1 (en
Original Assignee
Uk Ni Vatelsky K Tekhno Logisc
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 Uk Ni Vatelsky K Tekhno Logisc filed Critical Uk Ni Vatelsky K Tekhno Logisc
Publication of IE35188L publication Critical patent/IE35188L/en
Publication of IE35188B1 publication Critical patent/IE35188B1/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
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/0605—Composition of the material to be processed
    • B01J2203/0625—Carbon
    • 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
    • B01J2203/068—Crystal growth

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

1305046 Producing diamond UKRAINSKY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO - ISSLEDOVATELSKY KONSTRUKTORSKO - TEKHNOLOGICHESKY INSTITUT SINTETICHESKIKH SVERKHTVERDYKH MATERIALOV I INSTRUMENTA GOSPLANA UKRAINSKOI SSR 3 Dec 1970 [4 May 1970] 57531/70 Heading C1A Diamonds are prepared by subjecting a carboniferous material, i.e. carbon or a material which decomposes to give free carbon under the conditions used, and calcium oxide in direct contact therewith to a temperature of at least 1800‹ C. and a pressure corresponding to that temperature within the diamond stable region of the carbon-graphite-diamond phase equilibrium diagram. The temperature is preferably at least 2000‹ C. and the pressure at least 80k.bars. The preferred carboniferous material is graphite which may be spectrally pure graphite. The calcium oxide may be mixed into a homogenous mixture with the graphite, or the reaction mix may comprise discs of CaO and graphite which are packed in alternating array into the chamber. [GB1305046A]
IE56071A 1970-05-04 1971-05-04 Improvements in or relating to synthetic diamond production IE35188B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1423098 1970-05-04

Publications (2)

Publication Number Publication Date
IE35188L true IE35188L (en) 1971-11-04
IE35188B1 IE35188B1 (en) 1975-12-10

Family

ID=20451526

Family Applications (1)

Application Number Title Priority Date Filing Date
IE56071A IE35188B1 (en) 1970-05-04 1971-05-04 Improvements in or relating to synthetic diamond production

Country Status (8)

Country Link
AT (1) AT328412B (en)
BE (1) BE759748A (en)
CA (1) CA945045A (en)
CH (1) CH557299A (en)
FR (1) FR2072780A5 (en)
GB (1) GB1305046A (en)
IE (1) IE35188B1 (en)
SE (1) SE371806B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406871A (en) * 1979-08-30 1983-09-27 Samoilovich Mikhail I Process for growing diamonds

Also Published As

Publication number Publication date
IE35188B1 (en) 1975-12-10
DE2056764B2 (en) 1977-06-02
AT328412B (en) 1976-03-25
ATA1038270A (en) 1975-06-15
BE759748A (en) 1971-06-02
SE371806B (en) 1974-12-02
DE2056764A1 (en) 1971-11-18
CH557299A (en) 1974-12-31
CA945045A (en) 1974-04-09
FR2072780A5 (en) 1971-09-24
GB1305046A (en) 1973-01-31

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