Accession Number:

ADA101703

Title:

Development of Boride Composite Materials for Cold Cathode Devices

Descriptive Note:

Final technical rept. 10 Jan 1979-10 Feb 1980

Corporate Author:

GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION

Personal Author(s):

Report Date:

1981-05-01

Pagination or Media Count:

128.0

Abstract:

This report documents the results of a study to identify and develop binary and pseudobinary boride systems which would produce uniform arrays of metal boride needle crystals in parallel alignment by application of directional solidification. Evidence of aligned needle microstructure was observed in the systems LaB6-B, Fe2B-Fe, LaB6-Cu, TiB2-Ni and LaB6-Ni. Since much of the effort was expended on development of suitable preparation and analysis techniques further developmental work is recommended to bring the most promising systems to the point where test specimens could be produced. The LaB6-B eutectic shows greatest promise, followed by LaB6-Ni and LaB6-Cu, as potentially useful composite field emission cathode material

Subject Categories:

  • Electrical and Electronic Equipment
  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE