High temperature resistant ceramic materials

Due to the increasing demand for thermal equipment such as high-temperature ceramic material smelting, the rapid development of the aerospace industry has also driven the development of high-temperature ceramics, and its quality has been improved.After verification, the variety has been improved.At present, alumina, silicon carbide, silicon nitride and other single-component high temperature ceramics can not meet the requirements of high temperature operation.Various new composite high temperature ceramics with excellent properties have become the focus of people's attention.

High temperature resistant ceramic materials with special physical and chemical properties, simple preparation process, can meet the needs of most high temperature workplace, has attracted the attention of researchers.However, the poor adhesion between coating and substrate also limits its application to some extent.The rapid development of petroleum, chemical, metallurgy, aerospace and other industries has put forward higher requirements for the performance of high temperature resistant materials.However, the traditional high temperature ceramic materials can not meet the requirements of high temperature operation because of their poor thermal shock resistance and low fracture toughness.Temperature material has become inevitable.In recent years, material workers have found that composite materials can synthesize the advantages of various materials, and developed a variety of composite phase high-temperature ceramics.In the future high temperature ceramics, the traditional high temperature ceramics composites will become the leading role for a long time.

There are many kinds of high temperature resistant ceramic materials.The most common materials are high temperature resistant ceramic coating materials on metal surface, high temperature resistant ceramic coating materials on inorganic non-metal surface and ceramic plastics.Metal materials have been widely used because of their superior properties, but their corrosion resistance, oxidation resistance and high temperature resistance are not ideal.Therefore, it is necessary to use high temperature ceramic material with good chemical stability to protect the coating.