Method for regulating and controlling microstructure and property of Ti-based perovskite ferroelectric ceramic

• Main Authors: GUO JIAN, ZHANG SHANTAO
• Format: Patent
• Language: Chinese; English
• Published: 25.11.2022
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a method for regulating and controlling a microstructure and properties of Ti-based perovskite ferroelectric ceramic. According to the method, raw materials are sintered at a high temperature to obtain the Ti-based perovskite ferroelectric ceramic with the chemical formula of Bi < 0.38 > Na < 0.38 > Sr < 0.24 > TiO3, the raw materials comprise Bi2O3, SrCO3, Na2CO3 and TiO2 powder, the TiO2 powder has a spherical cascade microstructure, and the spherical cascade microstructure is formed by gathering small microspheres with the particle size of 100-250 nm to form large microspheres with the particle size of 1.0-1.8 [mu] m. Compared with a traditional method for regulating and controlling the microstructure and the property by adding a sintering aid, the method for preparing the ceramic sample does not change the components of the ceramic or enables the components to be complicated, is convenient and efficient, does not have a complicated process, is relatively low in cost, and can be app