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BEO CERAMICS FOR MICROWAVE APPLICATIONS.
Quarterly rept. no. 2, 10 Jul-10 Oct 65,
BRUSH BERYLLIUM CO ELMORE OH
Pagination or Media Count:
The immediate purpose of this work has been to develop defense, low loss BeO-TiO2 bodies. Several techniques were utilized to either prevent the intrinsic reduction of TiO2 at the sintering temperature, or to neutralize this reduction effect. The techniques were as follows preparation of thin specimens which would allow oxygen diffusion throughout sintering under one atmosphere of oxygen pressure hot pressing at 1350 C firing in a fluorine atmosphere and doping with UO3. Success was not achieved with any of these techniques. Highly sintered bodies invariably exhibited high dissipation factors of the order of magnitude of 0.01 these bodies possessed the characteristic dark bluish-gray interiors which were semiconducting, with d-c resistance of 1,000-100,000 ohms. Author
APPROVED FOR PUBLIC RELEASE