JPS5669212A - Synthesis of diamond - Google Patents

Synthesis of diamond

Info

Publication number
JPS5669212A
JPS5669212A JP14191479A JP14191479A JPS5669212A JP S5669212 A JPS5669212 A JP S5669212A JP 14191479 A JP14191479 A JP 14191479A JP 14191479 A JP14191479 A JP 14191479A JP S5669212 A JPS5669212 A JP S5669212A
Authority
JP
Japan
Prior art keywords
seed crystal
diamond
crystal
metal
solvent
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
JP14191479A
Other languages
Japanese (ja)
Other versions
JPS6317492B2 (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 JP14191479A priority Critical patent/JPS5669212A/en
Publication of JPS5669212A publication Critical patent/JPS5669212A/en
Publication of JPS6317492B2 publication Critical patent/JPS6317492B2/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 a seed crystal in a process for growing a diamond crystal in a reactor having a temperature gradient under high temperature and pressure taking advantage of the solubility difference of carbon to the solvent metal, by separating the solvent metal from the seed crystal with a covering layer composed of a specific metal compound. 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. In the above process, a coating layer composed of a carbide, nitride, or carbonitride of a metal of the 4a, 5a, or 6a group of the periodic table and having a thickness of 1-50mu is formed to the interface between the seed crystal 1 and the solvent crystal 2 (or vice versa).
JP14191479A 1979-11-01 1979-11-01 Synthesis of diamond Granted JPS5669212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14191479A JPS5669212A (en) 1979-11-01 1979-11-01 Synthesis of diamond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14191479A JPS5669212A (en) 1979-11-01 1979-11-01 Synthesis of diamond

Publications (2)

Publication Number Publication Date
JPS5669212A true JPS5669212A (en) 1981-06-10
JPS6317492B2 JPS6317492B2 (en) 1988-04-14

Family

ID=15303095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14191479A Granted JPS5669212A (en) 1979-11-01 1979-11-01 Synthesis of diamond

Country Status (1)

Country Link
JP (1) JPS5669212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59164608A (en) * 1983-03-11 1984-09-17 Showa Denko Kk Method for synthesizing diamond

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014542A1 (en) * 1991-02-15 1992-09-03 Sumitomo Electric Industries, Ltd. Process for synthesizing diamond

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59164608A (en) * 1983-03-11 1984-09-17 Showa Denko Kk Method for synthesizing diamond
JPH0380535B2 (en) * 1983-03-11 1991-12-25 Showa Denko Kk

Also Published As

Publication number Publication date
JPS6317492B2 (en) 1988-04-14

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