Research on Zircon Polarizers.

Belt, Roger F.; Puttbach, Richard C.; Dharmarajan, Ramanathan

Research on Zircon Polarizers.

Active / Technical Report | Accession Number: AD0744067 |

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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

Author(s):

Belt, Roger F. ; Puttbach, Richard C. ; Dharmarajan, Ramanathan

Author Organization(s):

LITTON SYSTEMS INC MORRIS PLAINS N J AIRTRON DIV

Descriptive Note:

Quarterly rept. no. 3, Jan-Mar 71,

Supplementary Note:

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

R11-590-3

Contract/Grant Number(s):

N00014-70-C-0379

Project Number(s):

NR-016-403

Subject Terms

Communities of Interest:

No COI(s) Identified

Descriptor(s):

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

Field(s)/Group(s):

Crystallography

Keyword(s):

*ZIRCONIUM SILICATE, *ZIRCON, FUSED SALTS, HYDROTHERMAL CRYSTAL GROWTH, CZOCHRALSKI METHOD

Report Date:

1971 Mar 31