SINGLE-CRYSTAL TUNGSTEN
Abstract
A technique and the apparatus for growing large (1 m long) single crystals of W are described. A single-crystal W wire is placed in WCl6 vapor, which partially decomposes into its components above 1000 C. The factors which influence a regular growth are: (1) the temperature of the growing wire; (2) the WCl6 pressure; (3) the pressure of the free Cl; and (4) the orientation of the crystal with respect to the wire. Singlecrystal W was much softer and more flexible than W prepared in the usual manner. An x-ray analysis showed that the single-crystal structure was destroyed by working, and with increasing deformation, the properties of the material approach those of ordinary tungsten.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 11, 1961
- Accession Number
- AD0265274
Entities
People
- A.e. Van Arkel
Organizations
- Library of Congress