GB1386241A - Diamond synthesis - Google Patents
Diamond synthesisInfo
- Publication number
- GB1386241A GB1386241A GB2957771A GB2957771A GB1386241A GB 1386241 A GB1386241 A GB 1386241A GB 2957771 A GB2957771 A GB 2957771A GB 2957771 A GB2957771 A GB 2957771A GB 1386241 A GB1386241 A GB 1386241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- diamond
- length
- temperature
- june
- 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
-
- 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
- B01J2203/061—Graphite
-
- 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)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
1386241 Diamond-making apparatus STANDARD TELEPHONES & CABLES Ltd 15 June 1972 [24 June 1971] 29577/71 Heading B1X [Also in Division Cl] Diamond is synthesised by subjecting a body of carbonaceous material and a catalyst to pressure and temperature conditions such that diamond produced is stable with respect to graphite, and a zone of molten catalyst is caused to move through the body, its position being controlled by a local temperature gradient superposed on the body and moved along the length thereof. The zone melting is achieved with the conventional multiple anvil high pressure apparatus by a helically wound electric heater element having a plurality of tapped connections along its length, each connected to a different anvil and controlling the current to each section between adjacent tapped connexions so as to cause a substantially level temperature profile and a local rise in temperature to melt the zone, the local rise and the molten zone being caused to pass along the length of the body.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2957771A GB1386241A (en) | 1971-06-24 | 1971-06-24 | Diamond synthesis |
ZA722597A ZA722597B (en) | 1971-06-24 | 1972-04-18 | Diamond synthesis |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2957771A GB1386241A (en) | 1971-06-24 | 1971-06-24 | Diamond synthesis |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1386241A true GB1386241A (en) | 1975-03-05 |
Family
ID=10293726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2957771A Expired GB1386241A (en) | 1971-06-24 | 1971-06-24 | Diamond synthesis |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1386241A (en) |
ZA (1) | ZA722597B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0032545A1 (en) * | 1979-12-20 | 1981-07-29 | F. D. International Ltd. | Process and device for transforming material using high pressures and temperatures |
EP0430397A1 (en) * | 1989-11-21 | 1991-06-05 | Mitsubishi Materials Corporation | Artificial diamond forming method |
-
1971
- 1971-06-24 GB GB2957771A patent/GB1386241A/en not_active Expired
-
1972
- 1972-04-18 ZA ZA722597A patent/ZA722597B/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0032545A1 (en) * | 1979-12-20 | 1981-07-29 | F. D. International Ltd. | Process and device for transforming material using high pressures and temperatures |
EP0430397A1 (en) * | 1989-11-21 | 1991-06-05 | Mitsubishi Materials Corporation | Artificial diamond forming method |
Also Published As
Publication number | Publication date |
---|---|
ZA722597B (en) | 1973-01-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |