GB1400534A - Synthetic diamonds - Google Patents

Synthetic diamonds

Info

Publication number
GB1400534A
GB1400534A GB4159272A GB4159272A GB1400534A GB 1400534 A GB1400534 A GB 1400534A GB 4159272 A GB4159272 A GB 4159272A GB 4159272 A GB4159272 A GB 4159272A GB 1400534 A GB1400534 A GB 1400534A
Authority
GB
United Kingdom
Prior art keywords
carbon
composition
diamond
groups
temperature
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
GB4159272A
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.)
Edenvale Engineering Works Pty Ltd
Original Assignee
Edenvale Engineering Works Pty Ltd
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 Edenvale Engineering Works Pty Ltd filed Critical Edenvale Engineering Works Pty Ltd
Priority to GB4159272A priority Critical patent/GB1400534A/en
Publication of GB1400534A publication Critical patent/GB1400534A/en
Expired legal-status Critical Current

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
    • B01J2203/065—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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1400534 Synthesis of diamond EDENVALE ENG WORKS (PTY) Ltd 7 Sept 1972 41592/72 Heading C1A Synthetic diamonds are made by subjecting a carbon containing composition to conditions of temperature and pressure below the Berman- Simon Line so as to cause decomposition of the material to release carbon atoms or groups thereof and effect conversion of the released carbon atoms or groups of atoms into diamond, the carbon-composition being free of covalent carbon-hydrogen bonds and being a carbon compound or a residual compound obtained by heat and/or chemical treatment of a carbon compound. Perhalohydrocarbons particularly chlorine compounds are exemplified, and chloranil is also suggested. A getter for the halogen gas, e.g. an alkali metal or alkaline earth metal may be present in the composition. The preferred getter is lithium. The temperature and pressure used may be below 2000‹ C. and 100 kilobars respectively. The composition is preably brought to the desired conditions in a series of steps.
GB4159272A 1972-09-07 1972-09-07 Synthetic diamonds Expired GB1400534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4159272A GB1400534A (en) 1972-09-07 1972-09-07 Synthetic diamonds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4159272A GB1400534A (en) 1972-09-07 1972-09-07 Synthetic diamonds

Publications (1)

Publication Number Publication Date
GB1400534A true GB1400534A (en) 1975-07-16

Family

ID=10420409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4159272A Expired GB1400534A (en) 1972-09-07 1972-09-07 Synthetic diamonds

Country Status (1)

Country Link
GB (1) GB1400534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254091A (en) * 1977-05-13 1981-03-03 Eduard Woermann Diamond synthesis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254091A (en) * 1977-05-13 1981-03-03 Eduard Woermann Diamond synthesis

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Legal Events

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