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

The sintering conditions of piezoelectric ceramics are mainly composed of four aspects: 1 heating rate; 2 highest sintering temperature; 3 holding time; 4 cooling rate and cooling mode. The general principle for the development of reasonable sintering conditions is to burn high-quality porcelain ( t

Sintering is a process in which heat is used to transform a green body into a dense piezoelectric ceramics body having a certain microstructure. They are sintexring theory points and sintering process, consciously perform the sintering process, here briefly introduce the main points of sintering the

Granulation is a process in which a porcelain PZT material parameter is mixed with a binder to prepare coarser particles (about 20 mesh/inch) having good fluidity. This kind of granule is called a pellet to show the difference.1) The role of granulationSince the ground porcelain powder of sensitive

There are many methods for forming ceramic embryo , such as pressure forming, plastic forming and slurry forming. Each type of forming method can be divided into several specific forming methods of Pzt ceramic disc. It can be selected according to the shape, specification and size of the product, bu

(1) The process method of piezoelectric ceramics is to use a ball mill (drum type, planetary type, agitating type and vibrating type ball mill), and add grinding balls (steel balls, agate balls, zirconium balls, etc.) and media (water, alcohol, etc.) to the raw materials. It is mechanical mixing or

(1) Positive piezoelectric effectIf a pressure F is parallel to the direction of polarization which is applied to the ceramic sheet, the ceramic sheet is compressed, the polarization is reduced, and the free charge of piezoelectric ceramics originally absorbed is released, and a discharge phenomenon

The piezoelectric phenomenon and the piezoelectric effect are that the electronic transducer piezo ceramics column exerts a pressure perpendicular to the electrode surface, which causes deformation and also generates a high voltage discharge. An audible alternating voltage signal is applied to the p

Barium titanate piezoelectric ceramics (3BaTiO. Barium titanate is the first piezoelectric ceramic made and widely used, and its electromechanical coupling coefficient is very high. Compared with other piezoelectric ceramics, it has a lower curie point and its electromechanical.The performance is ve

Barium titanate piezoelectric ceramics (3BaTiO. Barium titanate is the first piezoelectric ceramic made and widely used, and its electromechanical coupling coefficient is very high. Compared with other piezoelectric ceramics, it has a lower curie point and its electromechanical.The performance is ve

(1) Dielectric constant εThe dielectric constant is a reflection of the dielectric properties of a material, or the nature of polarization, and is usually expressed . Piezoelectric ceramic components for different purposes have different dielectric constant requirements for piezoelectric ceramics. F

At first, we tried to measure the DC high-voltage gear of the ordinary pointer type multi-meter. It was found that the voltage of the two electrodes of piezoelectric ceramics can only slightly shake the pointer when the black plastic pressure bar of the ignition element is pressed. The reason for th

Different application ranges have different performance requirements for piezoelectric ceramic materials. 1 Perovskite piezoelectric ceramic material, the chemical formula is ABO3, A is a positive ion with a large radius, which can be +1, +2, +3; B is a positive ion with a small radius, which can be

What’s the polarization process of piezoelectric ceramicsThe polarization process of piezo ceramics refers to adding a strong DC electric field to the piezoelectric ceramic to align the domains in the ceramic in the direction of the electric field. Only the ceramics processed by the