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Structural Ceramics Actual Needs

Hangzhou JWG Technology Co.Ltd | Updated: Oct 27, 2017

Functional ceramics include insulating materials (electricity, heat), capacitor dielectric materials, ferroelectric and piezoelectric materials, semiconductor materials, superconducting materials, electro-optical ceramic materials, thermoelectric ceramic materials, chemical adsorption materials, and solid electrolyte materials. In the traditional piezoelectric ceramic materials such as PbTiO3, Structural Ceramics PbZrxTi1-xO3 (PZT) doped with rare earth oxides such as Y2O3, La2O3, Sm2O3, CeO2, Nd2O3, etc. can greatly improve the dielectric and piezoelectric properties of these materials, so that they More suitable for practical needs, and now PZT piezoelectric ceramics have been widely used in electro-acoustic, acoustic, ultrasonic devices, signal processing, Structural Ceramics infrared technology, ignition detonation, micro-motor and so on. Piezoelectric ceramic sensors have been successfully used in automotive air bag protection system. In the mobile phone and computer using a large number of multi-layer ceramic capacitors, rare earth elements such as La, Ce, Nd play an important role in which. The study of rare earth semiconductors is very active. The materials are mainly BaTiO3-doped rare earths and SrTiO3-based rare earths. Structural Ceramics Rare earth doping plays a key role in this effect, and PTC thermal semiconducting materials can be used as over- Overheat protection components, temperature compensators, temperature sensors, delay components, degaussing components and so on.

High-temperature superconducting materials are also popular research topics in the world. The Curie temperature Tc of the superconducting material has been greatly improved due to the discovery of rare earth oxide La-Ba-Cu-O superconductor and its subsequent research. China's high-temperature superconductivity research in the international leading position, Structural Ceramics Y-Ba-Cu-O system preparation technology, application technology and application of basic research has made varying degrees of progress, RE-Ba-Cu-O superconductor Tc is 80 ~ (Sr, Nd) CuO2 and Sr1-xYxCuO2 were synthesized by alkali-based rare earth doped superconductors. Superconducting materials are widely used, Structural Ceramics can be used as superconducting electromagnets for maglev trains, can be used for generators, engines, power transmission, microwave and so on.

High temperature structural ceramics, mainly refers to the rare earth doped Si3N4, SiC, ZrO2 and other high temperature, high strength, high toughness ceramic, is the engineering ceramics. Si3N4 ceramics and their composites doped with rare earth (La, Y) can be used in high-tech fields such as high-temperature gas turbine, ceramic engine and high temperature bearing, and the working temperature is up to 1650 ℃. Structural Ceramics Silicon nitride ceramic bearings can be used in some special environments such as electromagnetic field environment, the temperature range of -40 ℃ ~ +200 ℃, and can not be used in the environment can not be lubricated. Structural Ceramics The rare earth ZrO2 toughened ceramics can be used as wear-resistant materials such as internal combustion engine parts, blades, Structural Ceramics mold inserts, computer-driven components, seals and ceramic bearings.

Hangzhou JWG Technology Co.Ltd