JPS5556100A - Production of star ruby or star sapphire - Google Patents

Production of star ruby or star sapphire

Info

Publication number
JPS5556100A
JPS5556100A JP12706778A JP12706778A JPS5556100A JP S5556100 A JPS5556100 A JP S5556100A JP 12706778 A JP12706778 A JP 12706778A JP 12706778 A JP12706778 A JP 12706778A JP S5556100 A JPS5556100 A JP S5556100A
Authority
JP
Japan
Prior art keywords
raw material
rod
star
sintered
alco
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
JP12706778A
Other languages
Japanese (ja)
Other versions
JPS6128637B2 (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 JP12706778A priority Critical patent/JPS5556100A/en
Publication of JPS5556100A publication Critical patent/JPS5556100A/en
Publication of JPS6128637B2 publication Critical patent/JPS6128637B2/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 sintering NH4AlCO3(OH)2 and then by crystallizing the molten material.
CONSTITUTION: NH4AlCO3(OH)2 obtd. by the reaction of NH4HCO3 are ammonium alum is calcined to form fine Al2O3 particles hard to aggregate. Using this 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 material rod 4 of corundum uniformly contg. chromium oxide, titanium oxide or the like is set in spheroidal mirror 1, and halogen lamp 2 or the like is placed. Infrated 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
JP12706778A 1978-10-16 1978-10-16 Production of star ruby or star sapphire Granted JPS5556100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12706778A JPS5556100A (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
JP12706778A JPS5556100A (en) 1978-10-16 1978-10-16 Production of star ruby or star sapphire

Publications (2)

Publication Number Publication Date
JPS5556100A true JPS5556100A (en) 1980-04-24
JPS6128637B2 JPS6128637B2 (en) 1986-07-01

Family

ID=14950758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12706778A Granted JPS5556100A (en) 1978-10-16 1978-10-16 Production of star ruby or star sapphire

Country Status (1)

Country Link
JP (1) JPS5556100A (en)

Also Published As

Publication number Publication date
JPS6128637B2 (en) 1986-07-01

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