GB1333297A - Method and apparatus for making crystalline materials in parti cular diamonds - Google Patents
Method and apparatus for making crystalline materials in parti cular diamondsInfo
- Publication number
- GB1333297A GB1333297A GB224271A GB224271A GB1333297A GB 1333297 A GB1333297 A GB 1333297A GB 224271 A GB224271 A GB 224271A GB 224271 A GB224271 A GB 224271A GB 1333297 A GB1333297 A GB 1333297A
- Authority
- GB
- United Kingdom
- Prior art keywords
- horn
- graphite
- diamonds
- large end
- hammer
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/42—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by magnetic means, e.g. electromagnetic
-
- 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
- B01J3/08—Application of shock waves for chemical reactions or for modifying the crystal structure of substances
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/026—High pressure
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
1333297 Diamonds NATIONAL AERONAUTICS & SPACE ADMINISTRATION 18 Jan 1971 [16 Jan 1970] 2242/71 Heading C1A [Also in Division B1] Diamonds are formed by confining graphite in a pocket 28 of an anvil 30, and then directing a pressure front into -the graphite by positioning an exponentially tapering horn 23 so that the small end of the horn is in contact with the graphite and electrically generating a shock wave of sufficient intensity, e.g. by magnetic hammer 10 in the large end of the horn, which shock wave is velocity amplified and concentrated so that substantially all the energy of the wave arrives almost simultaneously at the small end of the horn in contact with the graphite, and this energy is transferred to the graphite, and compresses and heats it to a level sufficient to form diamond. Preferably an initial less intense shock may be generated at the large end of the horn so as to settle and pack the graphite in the pocket. The individual integers of the apparatus are supported as a unit by a lower plate 34, upper plate 36 and threaded rods 40, 42. Plate 36 is perforated at 38 .to permit the passage of the electrical transmission lines -to the magnetic hammer. The shape of the exponential horn is determined by the equation y=Ce<SP>ax</SP> which is rotated about the x-axis of its representative curve to generate the horn. A copper plate 18 is positioned adjacent the large end of the horn, being preferably separated from the magnetic hammer 10 by a sheet 20 of insulating material. The hammer is connected to a voltage source 14 and a capacitor bank 12 by transmission lines 16.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US341870A | 1970-01-16 | 1970-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1333297A true GB1333297A (en) | 1973-10-10 |
Family
ID=21705779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB224271A Expired GB1333297A (en) | 1970-01-16 | 1971-01-18 | Method and apparatus for making crystalline materials in parti cular diamonds |
Country Status (6)
Country | Link |
---|---|
US (1) | US3632242A (en) |
JP (1) | JPS5442958B1 (en) |
CA (1) | CA954018A (en) |
DE (1) | DE2101283C3 (en) |
FR (1) | FR2076129B1 (en) |
GB (1) | GB1333297A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4385880A (en) * | 1957-06-27 | 1983-05-31 | Lemelson Jerome H | Shock wave processing apparatus |
SE430479B (en) * | 1980-11-10 | 1983-11-21 | Cerac Inst Sa | FORM FOR COMPACTING POWDER WITHOUT A BOTTLE |
US4602422A (en) * | 1984-06-18 | 1986-07-29 | Khanh Dinh | Flash compression process for making photovoltaic cells |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3107395A (en) * | 1959-11-27 | 1963-10-22 | Gen Electric | High pressure high temperature apparatus |
BE628067A (en) * | 1961-01-13 | |||
US3184353A (en) * | 1961-11-13 | 1965-05-18 | Cavitron Ultrasonics Inc | Fastening together of members by high frequency vibrations |
US3423794A (en) * | 1964-06-30 | 1969-01-28 | Wayne D Wilson | Ultrasonic method for producing phase transitions in materials at high pressures |
-
1970
- 1970-01-16 US US3418A patent/US3632242A/en not_active Expired - Lifetime
-
1971
- 1971-01-11 FR FR717100640A patent/FR2076129B1/fr not_active Expired
- 1971-01-13 DE DE2101283A patent/DE2101283C3/en not_active Expired
- 1971-01-15 CA CA102,871A patent/CA954018A/en not_active Expired
- 1971-01-16 JP JP71889A patent/JPS5442958B1/ja active Pending
- 1971-01-18 GB GB224271A patent/GB1333297A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3632242A (en) | 1972-01-04 |
DE2101283C3 (en) | 1981-07-09 |
FR2076129B1 (en) | 1973-08-10 |
FR2076129A1 (en) | 1971-10-15 |
DE2101283B2 (en) | 1980-11-27 |
DE2101283A1 (en) | 1971-07-22 |
JPS5442958B1 (en) | 1979-12-17 |
CA954018A (en) | 1974-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |