JPS5614500A - Manufacture of synthetic corundum single crystal having asterism - Google Patents
Manufacture of synthetic corundum single crystal having asterismInfo
- Publication number
- JPS5614500A JPS5614500A JP9077579A JP9077579A JPS5614500A JP S5614500 A JPS5614500 A JP S5614500A JP 9077579 A JP9077579 A JP 9077579A JP 9077579 A JP9077579 A JP 9077579A JP S5614500 A JPS5614500 A JP S5614500A
- Authority
- JP
- Japan
- Prior art keywords
- single crystal
- flux
- rod
- tio
- seed crystal
- 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
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
PURPOSE: To cheaply obtain the titled single crystal having high purity and a uniform composition by setting an Al2O3 flux blended with a specified amount of TiO2 and having a m.p. lower than that of a starting material Al2O3 rod contg. a specified amount of TiO2 and a seed crystal under the rod and heating the flux.
CONSTITUTION: Under a starting material Al2O3 rod contg. 0.01W2mol% TiO2 an Al2O3 flux blended with 0.02W3mol% TiO2 and having a m.p. lower than that of the rod is set, a seed crystal is further set under the flux, and the flux is melted by heating to deposit a single crystal on the seed crystal. At this time, the flux is previously press molded, calcined, and fusion bonded to the bottom of the rod or the top of the seed crystal, the bulk density of the rod is adjusted to ≥80% of the true density, and the single crystal is grown at ≥0.1mm/hr rate by a floating zone method. By repeating the operation of processing the single crystal similarly, the titled single crystal having higher purity as compared to a conventional method is obtd. cheaply.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9077579A JPS5614500A (en) | 1979-07-17 | 1979-07-17 | Manufacture of synthetic corundum single crystal having asterism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9077579A JPS5614500A (en) | 1979-07-17 | 1979-07-17 | Manufacture of synthetic corundum single crystal having asterism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5614500A true JPS5614500A (en) | 1981-02-12 |
JPS5728400B2 JPS5728400B2 (en) | 1982-06-16 |
Family
ID=14007973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9077579A Granted JPS5614500A (en) | 1979-07-17 | 1979-07-17 | Manufacture of synthetic corundum single crystal having asterism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5614500A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60134199U (en) * | 1984-02-17 | 1985-09-06 | 動力炉・核燃料開発事業団 | Globe port structure |
-
1979
- 1979-07-17 JP JP9077579A patent/JPS5614500A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5728400B2 (en) | 1982-06-16 |
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