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nature : the main phase of the four barium titanate (BaTi4O9) microwave dielectric ceramic materials. The relative dielectric constant of about 39. Kok dielectric loss tangent about 4 × 10-4 (10Gc). Temperature coefficient of capacitance is about -50 x 10-6 / ° C The frequency temperature coefficient of approximately 15 x 10-6 / ° C Linear expansion coefficient of about 9.4 x 10-6 / ° C Flexural strength greater than combustion. The main raw material for barium carbonate, titanium dioxide or titanium tetrachloride, barium carbonate. Using electronic ceramic art in general solid-phase synthesis. Also use common synthetic four precipitation of barium titanate, or general sintering technology pressing sintering method. Mainly used in the manufacture of high frequency capacitors, microwave integrated circuit substrate, microwave dielectric resonators and filters, etc..
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