Reliability Study on the Molding and Sintering Process of Microwave Ceramic Dielectric Filter
Starting with the microwave ceramic material NP37 itself,standard parts were pressed,and the effects of different molding pressures,sintering equipment(atmosphere furnace and tunnel furnace),and sintering temperature processes on the performance and reliability of the produced parts were investigated.This investigation involved density and electrical performance testing,as well as internal slice morphology observations.The optimal performance and reliability test results for a green body were achieved using a molding and sintering process with a forming pressure of 2 000 kg and a tunnel furnace temperature of 1 160℃.These conditions were applied to pro-duce a dielectric filter body,and slice observations,scanning electron microscopy testing,thermal shock testing,and temperature shock testing confirmed the high reliability of this molding and sintering process.The results sug-gest that guiding the production of dielectric filters through the verification of the standard component molding and sintering process can effectively enhance product reliability.
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