FR2094846A5 - Hot pressing of diamond/cermet composites - using a liquid metal to ensure uniform pressure distribution - Google Patents

Hot pressing of diamond/cermet composites - using a liquid metal to ensure uniform pressure distribution

Info

Publication number
FR2094846A5
FR2094846A5 FR7045424A FR7045424A FR2094846A5 FR 2094846 A5 FR2094846 A5 FR 2094846A5 FR 7045424 A FR7045424 A FR 7045424A FR 7045424 A FR7045424 A FR 7045424A FR 2094846 A5 FR2094846 A5 FR 2094846A5
Authority
FR
France
Prior art keywords
diamond
cermet
hot pressing
liquid metal
pressure distribution
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
FR7045424A
Other languages
French (fr)
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.)
INST FIZ VYSOKIKH
Original Assignee
INST FIZ VYSOKIKH
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 INST FIZ VYSOKIKH filed Critical INST FIZ VYSOKIKH
Priority to FR7045424A priority Critical patent/FR2094846A5/en
Application granted granted Critical
Publication of FR2094846A5 publication Critical patent/FR2094846A5/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
    • B01J2203/0605—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
    • 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
    • B01J2203/0685—Crystal sintering

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Powder Metallurgy (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Method of agglomeration of diamond and cermet materials to form drilling and polishing tools comprises sintering in a reaction chamber at high pressure, under conditions in which the diamond and cermet powders are first encased in a sealed graphite envelope itself coated with a material of low melting point which softens at a temp. below the sintering temp. forming a hydrostatic medium ensuring even distribution of pressure throughout the diamond-cermet mass. Diamond - diamond, cermet - cermet and diamond-cermet bonds are stronger than in prior art and bodies made are less liable to thermal stress and shock.
FR7045424A 1970-12-16 1970-12-16 Hot pressing of diamond/cermet composites - using a liquid metal to ensure uniform pressure distribution Expired FR2094846A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7045424A FR2094846A5 (en) 1970-12-16 1970-12-16 Hot pressing of diamond/cermet composites - using a liquid metal to ensure uniform pressure distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7045424A FR2094846A5 (en) 1970-12-16 1970-12-16 Hot pressing of diamond/cermet composites - using a liquid metal to ensure uniform pressure distribution

Publications (1)

Publication Number Publication Date
FR2094846A5 true FR2094846A5 (en) 1972-02-04

Family

ID=9065912

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7045424A Expired FR2094846A5 (en) 1970-12-16 1970-12-16 Hot pressing of diamond/cermet composites - using a liquid metal to ensure uniform pressure distribution

Country Status (1)

Country Link
FR (1) FR2094846A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434130A1 (en) * 1978-08-26 1980-03-21 Sumitomo Electric Industries SINTERED DIAMOND BODY AND ITS MANUFACTURING METHOD
FR2592821A1 (en) * 1986-01-16 1987-07-17 Inst Sverkhtverdykh Mat Device for hot compression of a composite material containing diamonds or cubic boron nitride

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434130A1 (en) * 1978-08-26 1980-03-21 Sumitomo Electric Industries SINTERED DIAMOND BODY AND ITS MANUFACTURING METHOD
FR2592821A1 (en) * 1986-01-16 1987-07-17 Inst Sverkhtverdykh Mat Device for hot compression of a composite material containing diamonds or cubic boron nitride

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Legal Events

Date Code Title Description
ST Notification of lapse