JPS55140707A - Carbon sintering method - Google Patents
Carbon sintering methodInfo
- Publication number
- JPS55140707A JPS55140707A JP4701279A JP4701279A JPS55140707A JP S55140707 A JPS55140707 A JP S55140707A JP 4701279 A JP4701279 A JP 4701279A JP 4701279 A JP4701279 A JP 4701279A JP S55140707 A JPS55140707 A JP S55140707A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- sintered
- mold
- punches
- electric current
- 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
Links
Landscapes
- Ceramic Products (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
PURPOSE: To bond a sintered product to high density and enhance the mechanical strength of the product by supplying an electric current to starting material powder in a mold or dies under an atmosphere of reduced pressure to generate glow discharge among the powder particles after which the powder is sintered by heating and pressurizig.
CONSTITUTION: Carbon powder 7 as starting material for sintering is filled between punches 4, 5 in mold 1. The interior of mold 1 is evacuated to about 1W50 Torr, and an electric current is supplied to powder 7 from power source 6 through upper and lower punches 4, 5 to generate glow discharge uniformly spread over the whole of powder 7. By this discharge gases and impurities attached to the surface of powder 7 are decomposition-evaporated to purify and activate the surface. Punches 4, 5 are then driven to pressurize powder 7, and the powder supply is increased to heat powder 7. Thus, powder 7 is sintered. By this method powder 7 is sintered in a short time, and the sintered body has high density and strength.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54047012A JPS5834401B2 (en) | 1979-04-16 | 1979-04-16 | Carbon sintering method |
US06/138,448 US4414028A (en) | 1979-04-11 | 1980-04-08 | Method of and apparatus for sintering a mass of particles with a powdery mold |
GB8011883A GB2051134B (en) | 1979-04-11 | 1980-04-10 | Sintering method and apparatus using a multi-directional compression system and a powder mould |
DE19803013943 DE3013943A1 (en) | 1979-04-11 | 1980-04-11 | METHOD AND DEVICE FOR SINTERING A PARTICLE SIZE WITH A POWDER-SHAPED SHAPE |
IT48402/80A IT1128651B (en) | 1979-04-11 | 1980-04-11 | PROCEDURE AND DEVICE FOR THE SINTERING OF A MASS OF PARTICLES WITH A MOLD OF FRIABLE MATERIAL |
FR8008222A FR2453701A1 (en) | 1979-04-11 | 1980-04-11 | SINTERING METHOD AND APPARATUS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54047012A JPS5834401B2 (en) | 1979-04-16 | 1979-04-16 | Carbon sintering method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55140707A true JPS55140707A (en) | 1980-11-04 |
JPS5834401B2 JPS5834401B2 (en) | 1983-07-26 |
Family
ID=12763250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54047012A Expired JPS5834401B2 (en) | 1979-04-11 | 1979-04-16 | Carbon sintering method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5834401B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60152110A (en) * | 1984-01-18 | 1985-08-10 | Fujitsu Ltd | Microwave amplifier |
JPS6356802A (en) * | 1986-08-28 | 1988-03-11 | Sony Corp | Rotary coupling device |
JPS63169801A (en) * | 1987-01-08 | 1988-07-13 | Fujitsu Ltd | Waveguide circuit module |
JPH01265703A (en) * | 1988-04-18 | 1989-10-23 | Fujitsu Ltd | Microwave amplifier |
-
1979
- 1979-04-16 JP JP54047012A patent/JPS5834401B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5834401B2 (en) | 1983-07-26 |
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