JPS5614500A - Manufacture of synthetic corundum single crystal having asterism - Google Patents

Manufacture of synthetic corundum single crystal having asterism

Info

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
Application number
JP9077579A
Other languages
Japanese (ja)
Other versions
JPS5728400B2 (en
Inventor
Isamu Shindo
Yutaka Oota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinkosha KK
National Institute for Research in Inorganic Material
Original Assignee
Shinkosha KK
National Institute for Research in Inorganic Material
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinkosha KK, National Institute for Research in Inorganic Material filed Critical Shinkosha KK
Priority to JP9077579A priority Critical patent/JPS5614500A/en
Publication of JPS5614500A publication Critical patent/JPS5614500A/en
Publication of JPS5728400B2 publication Critical patent/JPS5728400B2/ja
Granted legal-status Critical Current

Links

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  • 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
JP9077579A 1979-07-17 1979-07-17 Manufacture of synthetic corundum single crystal having asterism Granted JPS5614500A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS5728400B2 (en) 1982-06-16

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