Accession Number : ADA019200

Title :   Manufacturing Methods and Technology Measure Arc - Plasma - for Sprayed Phase - Shifter Elements.

Descriptive Note : Quarterly progress rept. no. 1, 27 Jun-30 Sep 75,

Corporate Author : RAYTHEON CO WALTHAM MASS RESEARCH DIV

Personal Author(s) : VanHook,H. J. ; Lesensky,L. ; Miller,H.

Report Date : OCT 1975

Pagination or Media Count : 56

Abstract : Nonmagnetic Li-Ti ferrite dielectrics have been processed, fired and ground to final dimensions in preparation for arc plasma spraying (APS). Thermal expansion data are given on a series of compositions with variations in alumina content. The ferrite powder to be used for APS coating has been examined by SEM and X-ray fluorescent analysis. We report data on microwave and other properties of a series of phase shifter elements produced at USAECOM laboratories. Different firing schedules were investigated to determine the optimum trade-off in properties. Work is nearing completion on design and construction of APS equipment which will allow a series of samples to be sprayed and immediately fired according to the required schedule. (Author)

Descriptors :   *Phase shift circuits, *Plasma spraying, *Arc spraying, Manufacturing, Coatings, Microwave equipment, Dielectrics, Ferrites, Lithium, Alumina, Powders

Subject Categories : Electrical and Electronic Equipment
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE