Accession Number:

ADA026918

Title:

Coated Antenna Wire.

Descriptive Note:

Final rept. 18 Nov 75-18 Mar 76,

Corporate Author:

BATTELLE COLUMBUS LABS OHIO

Report Date:

1976-03-18

Pagination or Media Count:

43.0

Abstract:

The object of this project was to develop a method for coating high modulus steel and tungsten wires with a material containing a stable high atomic number particulate filler. Since the matrix material in this composite coating is sacrificed during use a low cost, easily processed wire coating grade of polyethylene was chosen for the matrix. Tungsten, tungsten carbide, and lead were investigated as potential filler materials. These materials make suitable coating composites at up to 10 volume percent loading if the particulate fillers are free of contaminants. Coating problems encountered early in the program were identified as being caused by contaminated tungsten and tungsten carbide powders. Several interesting damping phenomena were identified during low-frequency torsional pendulum measurements of the coated wires, including a damping peak at approximately -30 C. Because a relationship bewteen the quantity of filler surrounding the wire and the peak amplitude exists it is suspected that the damping peak is caused by the tungsten carbide powder. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Laminates and Composite Materials
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE