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

A filter is a circuit or device that is selective to the frequency of the signal. To separate a signal at a certain frequency or a signal in a certain frequency band from a signal with a wide frequency range, a filter is required. For example, in multi-channel communication, if two or more people on

Materials and design of piezoelectric ceramic transformers Materials for piezoelectric ceramic transformers: It has a high electromechanical coupling coefficient, especially the transverse electromechanical coupling coefficient k31 and the longitudinal electromechanical coupling coefficient k33 o

About immune function, who observed the tumor regressed at the same time, the distant metastasis also subsided that HIFU treatment can improve the body's specific and non-specific immunity to tumors. The killing effect of tumor cells can indirectly promote the development and maturation of helper ly

Fiber grating refers to a segment of fiber with grating function formed by changing the distribution of refractive index in the fiber by ultraviolet radiation. It only reflects a certain wavelength of wave, which is equivalent to a kind of mirror. When there is strain or temperature change, it will

Alumina piezo ceramics are often formed by hot sintering. Since sintering usually causes deformation and shrinkage, it is generally required. To ensure the dimensional accuracy and shape accuracy of the workpiece. However, due to the general elasticity of alumina piezo ceramics materials.The modulus

The preparation process of alumina piezo ceramics mainly includes three aspects: preparation of alumina powder, formation of alumina ceramics and preparation of sintered alumina ceramics. At present, the preparation process of the alumina powder includes following aspects: (1) an hydrolysis method.

With the rapid development of optoelectronic technology and microelectronic technology,it is more and more urgent for the electronic piezo ceramics to use under the harsh environment,including high temperature, high humidity, electric strength, high radiation intensity. As commonly used materials in

Nowadays,piezo ceramics have been widely used in the electronics, chemical, military and otherfields due to their high hardness,strengths, excellent corrosion resistance and insulatingproperties. As the compositions of piezo ceramics and raw materials are key factors to determinethe performance, the

what is nano-technology of piezo ceramicsIn recent years, with the rapid development of nano-technology, nano piezo ceramics have gradually attracted people's attention. Nano-powders are shaped and sintered to form dense and uniform bulk nano-ceramics. The toughness, s