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JPS5556099A - Production of star ruby or star sapphire - Google Patents

Production of star ruby or star sapphire

Info

Publication number
JPS5556099A
JPS5556099A JP12706478A JP12706478A JPS5556099A JP S5556099 A JPS5556099 A JP S5556099A JP 12706478 A JP12706478 A JP 12706478A JP 12706478 A JP12706478 A JP 12706478A JP S5556099 A JPS5556099 A JP S5556099A
Authority
JP
Japan
Prior art keywords
rod
star
raw material
sintered
mirror
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
JP12706478A
Other languages
Japanese (ja)
Other versions
JPS6129918B2 (en
Inventor
Akihiko Kawachi
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP12706478A priority Critical patent/JPS5556099A/en
Publication of JPS5556099A publication Critical patent/JPS5556099A/en
Publication of JPS6129918B2 publication Critical patent/JPS6129918B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16—Heating of the molten zone
    • C30B13/22—Heating of the molten zone by irradiation or electric discharge

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

PURPOSE: To easily produce the title products of a large size and high quality in a high yield by concentrating infrared rays on a sintered raw material rod based on Al2O3 obtd. by vapor phase oxidation of an aluminum halide and then by crystallizing the molten material.
CONSTITUTION: A gaseous mixt. of an aluminum halide such as AlCl3 or AlBr3 and O2 is fed into a reaction tube heated to around 1000°C to form fine Al2O3 powder. Using this powder raw material, raw material rod 4 can be sintered densely at a low temp., and chromium oxide, titanium oxide or the like can be dissolved uniformly. Sintered raw mateirl rod 4 of corundum uniformly contg. chromium oxide, titanium oxide or the like is set in spheriodal mirror 1, and halogen lamp 2 or the like is placed at a focus of mirror 1. Infrared rays emitted from lamp 2 are concentrated on rod 4 to form melting zone 3, and rod 4 is slowly lowered to obtain crystal 5. Crystal 5 is further heat treated to form needlelike microcrystals, thus producing almost perfect star ruby or star sapphire.
COPYRIGHT: (C)1980,JPO&Japio
JP12706478A 1978-10-16 1978-10-16 Production of star ruby or star sapphire Granted JPS5556099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12706478A JPS5556099A (en) 1978-10-16 1978-10-16 Production of star ruby or star sapphire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12706478A JPS5556099A (en) 1978-10-16 1978-10-16 Production of star ruby or star sapphire

Publications (2)

Publication Number Publication Date
JPS5556099A true JPS5556099A (en) 1980-04-24
JPS6129918B2 JPS6129918B2 (en) 1986-07-10

Family

ID=14950686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12706478A Granted JPS5556099A (en) 1978-10-16 1978-10-16 Production of star ruby or star sapphire

Country Status (1)

Country Link
JP (1) JPS5556099A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116813A (en) * 1981-12-29 1983-07-12 Seiko Epson Corp surface acoustic wave device
JPS5935097A (en) * 1982-08-23 1984-02-25 Seiko Epson Corp Method for producing star corundum

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116813A (en) * 1981-12-29 1983-07-12 Seiko Epson Corp surface acoustic wave device
JPH0245368B2 (en) * 1981-12-29 1990-10-09 Seiko Epson Corp
JPS5935097A (en) * 1982-08-23 1984-02-25 Seiko Epson Corp Method for producing star corundum

Also Published As

Publication number Publication date
JPS6129918B2 (en) 1986-07-10

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