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  • Mar
    30
    Non-destructive Testing of Pressure Vessel——Non-destructive test of Automobile and Railway Tanker

    Abstract: Summarize the defects and possible non-destructive testing methods used in the manufacture and use of automobiles and railway tankers, including radiation, ultrasound, magnetic particles, penetration, magnetic leakage, acoustic emission, and magnetic memory testing, etc., and introduce eac

  • Dec
    30
    What is the function of the piezoelectric ceramic crystal of drive circuit inductor

    The function of the piezoelectric ceramic layer inductor is mainly to transmit DC and block AC. It mainly plays the role of filtering, oscillation, delay and notch in the circuit. Inductive coils block AC current. The size of the blocking effect is called inductive reactance x1, and the unit is ohms

  • Dec
    19
    How to estimate the displacement of ultrasonic piezoelectric ceramics transducer

    The displacement of the ultrasonic piezo ceramic transducer is estimated by using the inverse piezoelectric effect, that is, when a voltage is applied to the piezoelectric ceramics, the piezoelectric ceramics will be deformed and displaced under the influence of the electric field. Rough estimate of

  • Dec
    19
    What is the pressure resistance of ultrasonic piezoelectric ceramics?

    Single-layer piezoelectric ceramics, also commonly referred to as ultrasonic piezoelectric ceramic sheets, contain only one piezo ceramic crystals inside, and there is no electrode layer inside, and the outer surface has only electrode layers. Unlike multilayer piezoelectric ceramics, there are many

  • Oct
    31
    Characteristic Property Studies of Piezoelectric Ceramics Polarization

    Polarization and dielectric parameters of dielectrics piezoelectric ceramics crystals are mostly dielectric crystals, also known as dielectrics. Under the action of an external electric field, the dielectric will react to the external electric field in an inductive manner. A certain amount of induce

  • Oct
    08
    Factors affecting the Qm value of piezoelectric ceramic mechanical quality factor

    1 domain motionIn the Pb (Zr0. 52Ti0. 48)O3 PZT material piezoelectric ceramics composition, the addition of oxides such as La2O3, Nb2O5, ThO2 and WO3 reduces the Qm value . To explain the Qm reduction, it proposed the following mechanism. When is replacing Pb2 + , Ti4 + , Zr4 + in PZT ceramics with

  • Aug
    08
    Detecting method of piezoelectric ceramic crystal

    Piezoelectric ceramic crystal sheets are a synthetic piezoelectric material. When are subjected to external pressure, charges are generated on both sides surface, and the amount of charge is proportional to the pressure. This phenomenon is called the piezoelectric effect. Piezoelectric ceramics have

  • Dec
    20
    Application of Piezoelectric Ceramics in the Display Technology(二)

    Precise mechanical cutting method:Precision mechanical cutting is a common method of manufacturing piezoelectric micro devices. It uses a diamond cutter to cut a block of piezoelectric material or a thick film into micropillars and arrange them into an array for further assembly into a device. Howev

  • Nov
    26
    sintering conditions of piezoelectric ceramics(2)

    The effect of pre-firing temperature. When the calcination temperature of piezo ceramic crystals is low, the particle size is fine but the difference is small, the accumulation in the green body is not tight, and the contact points are not much, which is unfavorable. When the calcination temperatur

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