Accession Number:

AD0269701

Title:

HIGH TEMPERATURE MICROWAVE TUBE DESIGN AND PROCESSING

Descriptive Note:

Corporate Author:

RAYTHEON CO BURLINGTON MASS

Personal Author(s):

Report Date:

1961-10-01

Pagination or Media Count:

1.0

Abstract:

INVESTIGATIONS OF FACTORS WHICH WOULD PERMIT LONG-LIFE OPERATION OF MICROWAVE TUBES AT AN AMBIENT TEMPERATURE OF 350 C were carried out. The RK6249, a magnetron in high usage and considered of typical construction, was selected as the test vehicle. Ceramic-to-metal seal assemblies were designed to replace the glass bushings and the glass output window. A window assembly to view cathode operating temperature was designed. Work was conducted to provide for high temperature oxidation protection of the tube at high ambient temperature in air. The test vehicles constructed were life tested at 250 and 400 C for several hundred hours. Scrap analysis was performed to determine the cause of tube failure and the effect of high temperature operation on tube components. Materials and processing investigations were carried out during a parallel effort in which a suitable replacement for copper was found. The removal of carbon monoxide from stainless steel, Kovar and nickel was studied. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE