Accession Number : AD0718851

Title :   Research in Zircon Polarizers.

Descriptive Note : Quarterly rept. no. 2, Oct-Dec 70,

Corporate Author : AIRTRON INC MORRIS PLAINS N J

Personal Author(s) : Belt,Roger F. ; Puttbach,Richard C. ; Dharmarajan,Ramanathan

Report Date : 30 JAN 1971

Pagination or Media Count : 37

Abstract : Attempts to grow single crystals of zircon (ZrSiO4) by molten salt and hydrothermal techniques are described. Well developed crystals with (110) and (111) faces were grown up to 4 mm in size from a lithium tungstate melt. The crystal were colored pale to dark brown due to absorption of iron impurities along preferred crystallographic planes. A technique was developed for sintering high purity ZrO2 and SiO2 to yield pellets suitable for use as hydrothermal nutrient. High quality hydrothermal zircon growth was achieved on 1 x 1/2 inch (110) faces of natural zircon seed crystals. Experiments were performed in a one-inch platinum system at 500C and 29,000 psi using 3M KF as mineralizer. (Author)

Descriptors :   (*ZIRCONIUM COMPOUNDS, *CRYSTAL GROWTH), (*POLARIZING FILTERS, CRYSTAL GROWTH), (*SINGLE CRYSTALS, CRYSTAL GROWTH), SOLUBILITY, SILICATES, SINTERING FURNACES, SINTERING, ZIRCONIUM OXIDES, SILICON DIOXIDE, FEASIBILITY STUDIES, MANUFACTURING

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE