JPS5640434A - Graphite crucible - Google Patents
Graphite crucibleInfo
- Publication number
- JPS5640434A JPS5640434A JP11534979A JP11534979A JPS5640434A JP S5640434 A JPS5640434 A JP S5640434A JP 11534979 A JP11534979 A JP 11534979A JP 11534979 A JP11534979 A JP 11534979A JP S5640434 A JPS5640434 A JP S5640434A
- Authority
- JP
- Japan
- Prior art keywords
- section
- crucible
- graphite crucible
- necked
- base
- 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
- Devices For Use In Laboratory Experiments (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
PURPOSE: To enhance the stability of a crucible so that a charged sample is effectively melted by a method wherein an annular recess is installed to form a neck section on the vertically intermediate section of the outer surface of the crucible base with which is a cylindrical side wall forms a graphite crucible.
CONSTITUTION: A graphite crucible 21 consists of a properly thick cylindrical side wall 22 and a base section 23. An annular recess 24 is formed in the vertically middle section of the base 23 so that a necked section 23e is provided. The upper electrode 25 is mounted on the top end of the graphite crucible 21 with a proper pressing force. In the internal space A of the crucible, a passage 25a is installed to pass inert gas such as helium gas. Because the necked section 23e has a diameter shorter by the amount of recess depth than other portions, current concentrates on the necked section 23e so that a highest temperature is obtained in the area centering around the necked section 23e and including the inner base surface 23b. As a result, the sample is melted most effectively at the inner base surface 23b.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11534979A JPS5837855B2 (en) | 1979-09-08 | 1979-09-08 | graphite crucible |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11534979A JPS5837855B2 (en) | 1979-09-08 | 1979-09-08 | graphite crucible |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5640434A true JPS5640434A (en) | 1981-04-16 |
JPS5837855B2 JPS5837855B2 (en) | 1983-08-19 |
Family
ID=14660316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11534979A Expired JPS5837855B2 (en) | 1979-09-08 | 1979-09-08 | graphite crucible |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5837855B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS608749A (en) * | 1983-06-28 | 1985-01-17 | Horiba Ltd | Quantitative analysis of sample such as metal using graphite crucible |
JP2010038376A (en) * | 2008-07-31 | 2010-02-18 | Nippon Crucible Co Ltd | Energization heating apparatus |
-
1979
- 1979-09-08 JP JP11534979A patent/JPS5837855B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS608749A (en) * | 1983-06-28 | 1985-01-17 | Horiba Ltd | Quantitative analysis of sample such as metal using graphite crucible |
JPH0532700B2 (en) * | 1983-06-28 | 1993-05-17 | Horiba Ltd | |
JP2010038376A (en) * | 2008-07-31 | 2010-02-18 | Nippon Crucible Co Ltd | Energization heating apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5837855B2 (en) | 1983-08-19 |
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