Definition of cermet materials

Material is a milestone of human civilization and an important material basis for human survival and development. It is the use, discovery and invention of materials that have enabled human beings, in their struggle with nature, to walk out of the era of chaos and obscurantism and develop to today's highly developed science and technology. In today's world, energy, information and materials have become the symbol of the progress of modern human civilization. After metal and organic polymer materials, cermet materials are entering all walks of life with its excellent performance, wide variety and wide use. Its rapid development and great role attract the attention of the world. Metal ceramic material has high specific strength, than high modulus, wear resistance, high temperature resistance and other excellent properties, on many occasions has been as synonymous with new material, become a modern high and new technology, new industries and traditional industries the material basis for the technical reformation, is an indispensable important part of the development of modern national defense, has drawn great attention of countries all over the world especially the developed countries, have invested heavily in research and development, the metal ceramic materials as an important area of national high technology development.
 
Cermet is a structural material composed of ceramic hard phase and metal or alloy bonding phase. Cermets, from the English word Cermets, is composed of Ceramic and Metal. Ceramics not only maintain the characteristics of high strength, high hardness, wear resistance, high temperature resistance, oxidation resistance and chemical stability, but also have good metal toughness and plasticity. Since there is no clear boundary between the two terms of "cermet" and "cemented carbide", it is difficult to divide the boundary between specific materials. From the perspective of the composition of materials, "cemented carbide" should be classified as "cermet", and Ie. Campbell classified "cemented carbide" as "cermet".