JPS5669211A - Preparation of diamond - Google Patents

Preparation of diamond

Info

Publication number
JPS5669211A
JPS5669211A JP14191379A JP14191379A JPS5669211A JP S5669211 A JPS5669211 A JP S5669211A JP 14191379 A JP14191379 A JP 14191379A JP 14191379 A JP14191379 A JP 14191379A JP S5669211 A JPS5669211 A JP S5669211A
Authority
JP
Japan
Prior art keywords
carbon
diamond
solvent metal
crystal
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.)
Granted
Application number
JP14191379A
Other languages
Japanese (ja)
Other versions
JPS612631B2 (en
Inventor
Shuji Yatsu
Akio Hara
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP14191379A priority Critical patent/JPS5669211A/en
Publication of JPS5669211A publication Critical patent/JPS5669211A/en
Publication of JPS612631B2 publication Critical patent/JPS612631B2/ja
Granted 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)
  • Carbon And Carbon Compounds (AREA)

Abstract

PURPOSE:To prevent the dissolution of seed crystals, in a process for growing a diamont crystal in a reactor having a temperature gradient under high temperature and pressure taking advantage of the solubility difference of carbon to the solvent metals, by the use of a solvent metal containing carbon. CONSTITUTION:A diamond seed crystal 1, a solvent metal 2 and a carbon source 3 are combined together to a unit with a pressure medium 4, and the unit is inserted into a uniaxially compressing superhigh pressure generator, and heated above the eutectic temperature of the solvent metal and carbon with a heater 5 under high pressure under which diamond exists as the stable phase, while controlling the temperature near the seed crystal 1 below that of the carbon source 3, to effect the growth of diamond crystal on the seed crystal 1. The solvent metal (e.g. Fe, Ni, Co, etc.) used in the above process is nearly saturated with carbon before use.
JP14191379A 1979-11-01 1979-11-01 Preparation of diamond Granted JPS5669211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14191379A JPS5669211A (en) 1979-11-01 1979-11-01 Preparation of diamond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14191379A JPS5669211A (en) 1979-11-01 1979-11-01 Preparation of diamond

Publications (2)

Publication Number Publication Date
JPS5669211A true JPS5669211A (en) 1981-06-10
JPS612631B2 JPS612631B2 (en) 1986-01-27

Family

ID=15303071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14191379A Granted JPS5669211A (en) 1979-11-01 1979-11-01 Preparation of diamond

Country Status (1)

Country Link
JP (1) JPS5669211A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59203717A (en) * 1983-04-28 1984-11-17 Toshiba Tungaloy Co Ltd Manufacture of diamond crystal
US4836881A (en) * 1987-05-08 1989-06-06 Sumitomo Electric Industries, Ltd. Process for synthesizing large diamond

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59203717A (en) * 1983-04-28 1984-11-17 Toshiba Tungaloy Co Ltd Manufacture of diamond crystal
JPH0557019B2 (en) * 1983-04-28 1993-08-23 Toshiba Tungaloy Co Ltd
US4836881A (en) * 1987-05-08 1989-06-06 Sumitomo Electric Industries, Ltd. Process for synthesizing large diamond

Also Published As

Publication number Publication date
JPS612631B2 (en) 1986-01-27

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