High Strength Barium Titanate Ceramic Bodies.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The present invention provides novel barium titanate-based ceramic bodies having improved densification and mechanical strength properties without impairment of ferroelectric and dielectric characteristics. The combination of at least about 0.1 halide slats selected from the group consisting of alkali metal fluorides and LiCl with at least about 0.5 MgO or La2O3 and balance BaTiO3 comprise the ingredients for the high strength ceramic bodies. Standard manufacturing techniques such as, for example, cold pressing, sintering and annealing or hot pressing plus annealing are suitable to produce the novel ceramic bodies for use as piezoelectric elements, capacitors, and electrooptical elements.
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