Manufacturing Methods and Technology Measure for Arc Plasma Sprayed Phase Shifter Elements.
Quarterly progress rept. no. 4, 1 Apr-30 Jun 76,
RAYTHEON CO WALTHAM MASS RESEARCH DIV
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Data on plasma spray conditions are discussed for seventy-one APS samples produced during this quarter. Spray deposition and sample transfer rates of one full length phase shifter every twelve minutes was obtained with a high velocity plasma gun assembly, but the samples showed cracks in the ferrite layer. We have established the source and corrected a major cause of this cracking by changing the anode geometry on the arc plasma gun. Microwave and hysteresis loop properties are reported on a number of APS prepared samples. Because of the cracking problem the saturation phase shift is low approximately 300 deg per full length sample the insertion loss remains low less than 0.5 dB despite the presence of cracks. Author
- Electrical and Electronic Equipment