PZT piezoelectric ceramics have been the focus of attention and research since the 1960s due to its high curie temperature, strong piezoelectricity, easy doping modification and good stability. In the field of piezoelectric ceramics. In terms of the preparation process of PZT piezoelectric ceramics,

The preparation has processing methods, processing difficulties,grinding and polishing of piezo ceramic transducer substrates. According to the principle of single-side grinding,double-side grinding and characteristics of grinding and polishing, the piezo ceramic substrates was efficiently thinned .

When the piezo ceramic tile is positioned by the ceramic ring, the surface material of the alumina piezo ceramic after single-side grinding decreases with the decreasing of the hardness of the grinding disk, while the copper abrasive disk obtains the lowest surface roughness Ra.The quality of the gr

In the processing environment of double-side grinding of alumina Pzt piezo ceramic ring substrate, it is difficult to avoid the influence of iron ions, so that yellow iron oxide adsorbs and covers the surface of the substrate, and the surface of the substrate is liable to be yellow. Considering that

After the alumina piezo ceramic substrate is ground by different abrasives, the surface has different degrees of yellowing. This section uses EDS spectrum to detect the types of piezo elements before and after the surface of the alumina piezo ceramic substrate, and then explores the possible surface

The technological process of piezoelectric ceramic is as follows: Ingredients - mixing and grinding - pre-sintering - secondary grinding - granulation - molding - plasticizing - sintering into porcelain - shape processing - being electrode - high pressure polarization --Aging test.1. the ingredients

The polarization of some dielectrics is very special. In a certain temperature range, their dielectric constants are not constant, but vary with field strength, and after removing the external electric field, these dielectrics are not neutral. There is residual polarization. In order to be analogous

There are three main types of piezoelectric ceramics: barium titanate (BaTiO3), raw materials are titanium dioxide, barium carbonate, barium carbonate, etc.; lead zirconate titanate (PbZrTiO3), raw materials are titanium dioxide, zirconium oxide, lead oxide, barium carbonate, antimony oxide, antimon

Piezoelectric ceramics crystals are both dielectric and anisotropic dielectrics, so the dielectric properties of piezoelectric crystals are different from those of isotropic dielectrics.The dielectric is polarized under the action of an electric field, and the polarization state is a state in which

The piezoelectric effect is that when some dielectrics are deformed by an external force in a certain direction, polarization occurs inside, and positive and negative opposite charges appear on the two opposite surfaces thereof. When the external force is removed, it will return to the uncharged sta

Through the impedance test of the piezoelectric ceramic device, the model parameters and resonant frequency of the piezoelectric oscillator equivalent circuit can be obtained. Through the measurement and analysis of the electrical parameters such as capacitance value, temperature stability, insulati

1. Hysteresis characteristics of piezoelectric ceramics: The difference between the step-up and step-down displacement curves of the same piezoelectric ceramic, and the difference in displacement is called hysteresis. 2. Nonlinearity characteristics of piezoelectric ceramics: The input voltage of pi

(1)Oil bath polarization methodThe oil bath polarization method is a method in which a product such as methyl silicone oil is used as an insulating medium to polarize a product under a certain polarization electric field, temperature and time. Due to the wide temperature range, high dielectric stren

Whether the polarization process of piezo ceramic is sufficient or not has a great influence on the material properties. Therefore, it is necessary to reasonably select the polarization conditions, the polarization electric field, the polarization temperature and the polarization time, which are ref