Title: Method for growing of colour crystal
Application Number: 86101506 Application Date: 1986.06.27
Publication Number: 1015649 Publication Date: 1988.01.06
Approval Pub. Date: Granted Pub. Date: 1989.11.15
International Classifi-cation: C30B7/10,C30B29/18
Applicant(s) Name: Shanghai Inst. of Silicate, Chinese Academy of Sci Address:
Inventor(s) Name: Hua Sukun
Attorney & Agent: NIE SHUYI PAN ZHEN
Abstract:
     This invention is about a method for the growing of colour crystal. According to the crystallization characteristics of the crystal, we choose the favourite seed section ( y, -y, (30-80 degrees) x section) and use the combined alkali solution (NaOH-KOH) added with pertinent amount of ions (Al3 , Co2 , Fe3 , F2 , Mn4 ). When the pressure of the high pressure pot is 1200-1600 atmospheric pressure and the growing temperature 335-360 deg.C with its error being 15-25 deg.C, a kind of excellant colour crystal can be obtained which are, high productivity, fibrelessness, with even colour without any double-crystals, crackles and dubbles, and fittable to practical use.
Time: 9