Accession Number : AD0744067

Title :   Research on Zircon Polarizers.

Descriptive Note : Quarterly rept. no. 3, Jan-Mar 71,

Corporate Author : LITTON SYSTEMS INC MORRIS PLAINS N J AIRTRON DIV

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

Report Date : 31 MAR 1971

Pagination or Media Count : 32

Abstract : Attempts to grow single crystals of zircon (ZrSiO4) by molten salt and hydrothermal techniques are described. Crystals up to 8mm in size were grown from a lithium tungstate melt. The major problems experienced with the use of the tungstate flux have been the occurrence of entrapped flux inclusions and a tendency for hopper growth. A LiF-Li2O-V2O5 flux showed a relatively high solubility for zircon. However, co-precipitation of ZrO2 was observed along with zircon growth. High quality hydrothermal zircon growth has been achieved on the (110) faces of natural zircon seeds. Growth on zircon seeds with (001) faces was multicrystalline. Hydrothermal growth runs were performed in a one-inch platinum lined system at 548C and 25,000 psi using 3M KF as mineralizer. (Author)

Descriptors :   (*ZIRCONIUM COMPOUNDS, *CRYSTAL GROWTH), (*POLARIZING FILTERS, CRYSTAL GROWTH), SINGLE CRYSTALS, SILICATES, SOLUBILITY, FEASIBILITY STUDIES, MANUFACTURING

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE