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Functional Ceramics Key Role

Hangzhou JWG Technology Co.Ltd | Updated: Oct 11, 2017

Rare earth functional ceramics include insulating materials (electricity, heat), capacitor dielectric materials, ferroelectric and piezoelectric materials, Functional Ceramics semiconductor materials, superconducting materials, electro-optical ceramic materials, thermoelectric ceramic materials, chemical adsorption materials, as well as solid electrolyte materials. In the traditional piezoelectric ceramic materials such as PbTiO3, PbZrxTi1-xO3 (PZT) doped with rare earth oxides such as Y2O3, La2O3, Sm2O3, CeO2, Nd2O3, etc. Functional Ceramics 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, Functional 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. Rare earth doping plays a key role in this effect, Functional Ceramics and PTC thermal semiconducting materials can be used as over- Overheat protection components, temperature compensators, temperature sensors, delay components, degaussing components and so on.

Rare earth high temperature structural ceramics, mainly refers to the rare earth doped Si3N4, SiC, ZrO2 and other high temperature, high strength, Functional Ceramics high toughness ceramics, 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 ℃. 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. Functional Ceramics The rare earth ZrO2 toughened ceramics can be used as wear-resistant materials such as internal combustion engine parts, blades, mold inserts, computer-driven components, seals and ceramic bearings.

Hangzhou JWG Technology Co.Ltd