Some knowledge points of special ceramics
Manufacturers of special ceramics believe that ceramics are shaped sintered bodies obtained by molding and high-temperature sintering. Traditional ceramic materials mainly refer to aluminosilicates. At the beginning, people did not have high requirements for the selection of aluminosilicate, with low purity, uneven particle size, and low molding pressure. At this time, the obtained ceramics are called conventional ceramics. Later, it developed to high purity, small and uniform particle size, high molding pressure, and the sintered body obtained by sintering is called fine ceramics.
Fine ceramics, also known as special ceramics , refer to high-performance ceramics sintered from high-purity synthetic inorganic compounds through precise control processes. According to the characteristics of performance and materials, special ceramics can be roughly divided into five categories: structural ceramics, functional ceramics, semiconductor ceramics, ceramic fiber reinforced ceramic matrix composites and cermets. In actual research and application, structural ceramics and functional ceramics are mainly used. In daily life, we can often see "special ceramic" products: ceramic fruit knife, mobile phone back plate, ceramic watch, jewelry, chess, ceramic U disk shell, etc., all of which belong to the category of structural ceramics in special ceramics.
Special ceramic manufacturers believe that functional ceramics, also known as electronic ceramics, are widely used in energy development, electronic technology, sensing technology, laser technology, optoelectronic technology, Infrared technology, biotechnology, environmental science and other fields. In general, special ceramics is a new material that can be used in civil ceramics and shows its advantages in the fields of industry and electronics.
As a new material developed in the 20th century, special ceramics are not only a low-carbon industry developed by applying high-tech, but also rapidly "reproduced" under the promotion and cultivation of modern production and technology. Especially in the last 20 to 30 years, new varieties have emerged one after another, which is dazzling. It is precisely because of its rapid development that some scientists predict that special ceramics will occupy a very important position in the development of science and technology in the 21st century.
The different chemical composition and organizational structure of special ceramics determine their different special properties and functions, such as high strength, high hardness, high toughness, corrosion resistance, electrical conductivity, insulation, magnetism, light transmission, semiconductor, piezoelectric, photoelectric, electro-optic, Sound and light, magneto-optic, etc. Due to their special properties, these ceramics can be used as engineering structural materials and functional materials in machinery, electronics, chemical industry, smelting, energy, medicine, laser, nuclear reaction, aerospace, etc.