Accession Number:

AD0262004

Title:

A STUDY OF HIGH TEMPERATURE MICROWAVE TUBE DESIGN AND PROCESSING. PHASE I

Descriptive Note:

Corporate Author:

RADIO CORP OF AMERICA HARRISON N J

Personal Author(s):

Report Date:

1960-06-01

Pagination or Media Count:

1.0

Abstract:

Vapor-pressure andor evaporation-rate measurements were made of selected alloys and ceramics by measuring the rate of weight loss resulting from heating the materials at constant temperatures. The degassing properties of selected alloys in vacuum were studied at temperatures to 1000 C after initial baking at 400 C. The rate of permeation of selected alloys by nitrogen, hydrogen, carbon monoxide, and carbon dioxide were measured. The poisoning of the primary emission of an impregnated tungsten-matrix cathode by selected gases and metal vapors was studied. The severe poisoning by metals with the lowest vapor pressures is attributed to the retention of the metallic film on the surface of the heated tungsten-matrix cathode. Copper and gold, which do not alloy with tungsten and which have higher vapor pressure than those of the other metals studied, did not poison emission under the experimental conditions. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE