GB1500817A - Diamonds - Google Patents
DiamondsInfo
- Publication number
- GB1500817A GB1500817A GB16785/75A GB1678575A GB1500817A GB 1500817 A GB1500817 A GB 1500817A GB 16785/75 A GB16785/75 A GB 16785/75A GB 1678575 A GB1678575 A GB 1678575A GB 1500817 A GB1500817 A GB 1500817A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diamond
- pressure
- charge
- region
- 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
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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
-
- 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
- B01J2203/069—Recrystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
1500817 Work-hardened diamond GENERAL ELECTRIC CO 23 April 1975 [30 May 1974] 16785/75 Heading C1A A work-hardened diamond is prepared and mounted by a process comprising (a) filling an enclosure with a charge composed solely of discrete diamond crystals or at least one diamond crystal together with loose crystalline diamond or cubic boron nitride as embedment material therefor, (b) subjecting said enclosure and said charge to the simultaneous application of pressure and temperature conditions located in the region of plastic deformation as shown in the carbon phase diagram of Fig. I for a period in excess of 1 minute, (c) reducing the temperature to below 50C, (d) reducing the pressure to atmospheric pressure, (e) recovering the diamond content having deformation lamallae introduced therein from said charge. The charge may be solely diamond crystals of 5 to 500 micrometres size range. Pressure and temperature conditions simultaneously applied may be in the diamond-stable region of the carbon phase diagram, a maximum pressure of 55 kilobars and a maximum temperature of 1500C being preferred, or may be in the plastic deformation region of the diagram.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US47471974A | 1974-05-30 | 1974-05-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1500817A true GB1500817A (en) | 1978-02-15 |
Family
ID=23884679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16785/75A Expired GB1500817A (en) | 1974-05-30 | 1975-04-23 | Diamonds |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPS5713488B2 (en) |
BE (1) | BE829717A (en) |
CA (1) | CA1091938A (en) |
CH (1) | CH601105A5 (en) |
DE (1) | DE2519116C2 (en) |
FR (1) | FR2275405A1 (en) |
GB (1) | GB1500817A (en) |
IE (1) | IE41288B1 (en) |
IT (1) | IT1038378B (en) |
NL (1) | NL7506342A (en) |
SE (1) | SE417161B (en) |
ZA (1) | ZA752274B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014589A1 (en) * | 1979-02-08 | 1980-08-20 | De Beers Industrial Diamond Division (Proprietary) Limited | A method of making diamond particles and metal bond abrasive body produced therewith |
EP0460306A1 (en) * | 1988-08-29 | 1991-12-11 | Exxon Research And Engineering Company | Fabricating fracture-resistant diamond and diamond composite articles |
US8110041B2 (en) | 2002-09-06 | 2012-02-07 | Daniel James Twitchen | Coloured diamond |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59168957A (en) * | 1983-03-17 | 1984-09-22 | Akai Electric Co Ltd | Repeated reproducing device of tape player or the like |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3574580A (en) * | 1968-11-08 | 1971-04-13 | Atomic Energy Commission | Process for producing sintered diamond compact and products |
FR2026389A1 (en) * | 1968-12-18 | 1970-09-18 | Hall Howard |
-
1975
- 1975-04-08 IE IE789/75A patent/IE41288B1/en unknown
- 1975-04-09 ZA ZA00752274A patent/ZA752274B/en unknown
- 1975-04-23 GB GB16785/75A patent/GB1500817A/en not_active Expired
- 1975-04-29 DE DE2519116A patent/DE2519116C2/en not_active Expired
- 1975-05-02 CA CA226,176A patent/CA1091938A/en not_active Expired
- 1975-05-05 CH CH572175A patent/CH601105A5/xx not_active IP Right Cessation
- 1975-05-23 IT IT23661/75A patent/IT1038378B/en active
- 1975-05-29 NL NL7506342A patent/NL7506342A/en not_active Application Discontinuation
- 1975-05-29 JP JP6355275A patent/JPS5713488B2/ja not_active Expired
- 1975-05-30 BE BE156892A patent/BE829717A/en not_active IP Right Cessation
- 1975-05-30 FR FR7516918A patent/FR2275405A1/en active Granted
- 1975-05-30 SE SE7506226A patent/SE417161B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0014589A1 (en) * | 1979-02-08 | 1980-08-20 | De Beers Industrial Diamond Division (Proprietary) Limited | A method of making diamond particles and metal bond abrasive body produced therewith |
EP0460306A1 (en) * | 1988-08-29 | 1991-12-11 | Exxon Research And Engineering Company | Fabricating fracture-resistant diamond and diamond composite articles |
US8110041B2 (en) | 2002-09-06 | 2012-02-07 | Daniel James Twitchen | Coloured diamond |
Also Published As
Publication number | Publication date |
---|---|
IE41288L (en) | 1975-11-30 |
DE2519116A1 (en) | 1975-12-18 |
IE41288B1 (en) | 1979-12-05 |
CA1091938A (en) | 1980-12-23 |
DE2519116C2 (en) | 1984-12-20 |
SE417161B (en) | 1981-03-02 |
FR2275405A1 (en) | 1976-01-16 |
JPS5713488B2 (en) | 1982-03-17 |
ZA752274B (en) | 1976-03-31 |
IT1038378B (en) | 1979-11-20 |
NL7506342A (en) | 1975-12-02 |
BE829717A (en) | 1975-09-15 |
CH601105A5 (en) | 1978-06-30 |
JPS515293A (en) | 1976-01-16 |
SE7506226L (en) | 1975-12-01 |
FR2275405B1 (en) | 1979-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |