JPS5511162A - Green compact which undergoes electrosintering - Google Patents
Green compact which undergoes electrosinteringInfo
- Publication number
- JPS5511162A JPS5511162A JP8384878A JP8384878A JPS5511162A JP S5511162 A JPS5511162 A JP S5511162A JP 8384878 A JP8384878 A JP 8384878A JP 8384878 A JP8384878 A JP 8384878A JP S5511162 A JPS5511162 A JP S5511162A
- Authority
- JP
- Japan
- Prior art keywords
- green compact
- portions
- current
- end parts
- sintering
- 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.)
- Pending
Links
Abstract
PURPOSE: To eliminate the production of unsintered portions at end parts and improve sintering yield by reducing the sectional areas of the electrode contact portions at both ends of a molding at the time of sintering the high melting point metal molding such as of W, Mo and other through current supplying and self-heating.
CONSTITUTION: Current is supplied to a green compact 1 of powder such as of W, Mo and other, whereby the green compact is sintered through self-heating. At this time, both end parts of the green compact 1 are pressure held by electrodes 3, 5 and holders 4, 6, whereby current is supplied. Here, current is difficult to flow at the portions near the end faces where the electrodes 3, 5 do not contact, thus there is no evolution of excess heat and elevation to high temperatures is obviated. Hence, the portions where sintering is not sufficiently accomplished occur and the yield of sintering becomes poor. In such a case, the sectional areas of both end parts are reduced by opening tapered holes 2, 2' at both end parts or further forming tapered faces 9. The reduction in the sectional areas results in increased current density, increased temperature and eliminated unsintered portions, thus the entire part of the green compact 1 may be used as a sintered body.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8384878A JPS5511162A (en) | 1978-07-10 | 1978-07-10 | Green compact which undergoes electrosintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8384878A JPS5511162A (en) | 1978-07-10 | 1978-07-10 | Green compact which undergoes electrosintering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5511162A true JPS5511162A (en) | 1980-01-25 |
Family
ID=13814112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8384878A Pending JPS5511162A (en) | 1978-07-10 | 1978-07-10 | Green compact which undergoes electrosintering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5511162A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60114504A (en) * | 1983-11-24 | 1985-06-21 | Toshiba Corp | Tungsten sintered body |
| US5060171A (en) * | 1989-07-27 | 1991-10-22 | Clearpoint Research Corporation | A system and method for superimposing images |
-
1978
- 1978-07-10 JP JP8384878A patent/JPS5511162A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60114504A (en) * | 1983-11-24 | 1985-06-21 | Toshiba Corp | Tungsten sintered body |
| US5060171A (en) * | 1989-07-27 | 1991-10-22 | Clearpoint Research Corporation | A system and method for superimposing images |
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