Study On Preparation And Properties Of BaTiO₃ PTC Heat Sensitive Ceramics

PTC heat sensitive resistor for its good resistance to temperature and pressure has the wide use in temperature compensation and current limiting, etc. BaTiO₃ ceramics material is one of the most major materials of PTC. BaTiO₃ ceramics material is one of the most common materials of PTC. All kinds of methods for preparation of BaTiO₃ is reviewed in this paper and liquid routes, which can offer an powders having high purity, homogeneous composition, small particle diameter, is considered to be the major method. Sol-gel autoignition Synthesis is one of the prospective routes for manufacturing barium titanate powders because it is simple, self-cleaning and easy to undertake scale production.In order to controlling Curie temperature of ceramics for meeting different applications, Sr and Pb was added into BaTiO₃ materials and their contents was calculated by means of motion efficiency. BaTiO₃ materials were preparated in various Curie temperature through chaging...