Title:
SYNTHESIS METHOD OF SINGLE CRYSTAL OF ARTIFICIAL BERYL
Document Type and Number:
Japanese Patent JPS6081097
Kind Code:
A
Abstract:
PURPOSE:To synthesize single crystal of beryl of high quality economically with high efficiency by controlled the speed of crystal growth. CONSTITUTION:One or >= two kinds of flux among lithium molybdate, molybdenum trioxide, lithium hydoxide, and vanadium pentoxide are added to a starting material consisting of beryllium oxide, aluminum oxide, and SiO2 having a compsn. corresponding to beryl and single crystal of artificial beryl is synthesized by forming molten salt by heating the mixture to above the melting temp. of the flux. In this stage, one or >= two kinds among the starting materials is (are) sintered or vitrified previously and charging it to a vessel separated into three chambers with baffle plates to produce temp. difference to the molten salt prepd. by mixing two kinds among the flux material, i.e. lithium molybdate and molybdenum trioxide in the powder state, and single crystal of beryl is synthesized by controlling the speed of the crystal growth simultaneously.
Inventors:
KASUGA YOSHIHARU
ATOMACHI TADAAKI
TOGAWA EIJI
MORITA YOSHIO
TAKEUCHI MASAAKI
ATOMACHI TADAAKI
TOGAWA EIJI
MORITA YOSHIO
TAKEUCHI MASAAKI
Application Number:
JP19023183A
Publication Date:
May 09, 1985
Filing Date:
October 12, 1983
Export Citation:
Assignee:
SUWA SEIKOSHA KK
International Classes:
C30B9/00; C30B29/34; (IPC1-7): C30B9/12; C30B29/34
Attorney, Agent or Firm:
Kisaburo Suzuki (1 outside)