New materials (or advanced materials) refer to those materials that are newly developed or under development and have better performance than traditional materials.

New materials refer to some newly developed or under development materials with superior performance, which are superior to traditional materials.

New material technology is a technology to create new materials that can meet various needs through a series of research processes such as physical research, material design, material processing and experimental evaluation according to people's will.

With the development of science and technology, people develop new materials on the basis of traditional materials and the research results of modern science and technology. According to the composition, new materials can be divided into four categories: metallic materials, inorganic nonmetallic materials (such as ceramics, gallium arsenide semiconductors, etc.). ), organic polymer materials and advanced composite materials. According to the nature of materials, there are structural materials and functional materials. Structural materials mainly use the mechanical and physical and chemical properties of materials to meet the performance requirements of high strength, high stiffness, high hardness, high temperature resistance, wear resistance, corrosion resistance and radiation resistance; Functional materials mainly use the electrical, magnetic, acoustic, photothermal and other effects of materials to achieve certain functions, such as semiconductor materials, magnetic materials, photosensitive materials, heat-sensitive materials, stealth materials and nuclear materials for making atomic bombs and hydrogen bombs.

New materials play an important role in national defense construction. For example, the successful development of ultra-pure silicon and gallium arsenide led to the birth of large-scale and ultra-large-scale integrated circuits, which increased the computer operation speed from hundreds of thousands of times per second to more than10 billion times per second; When the working temperature of aero-engine materials increases 100℃, the thrust can be increased by 24%. Stealth materials can absorb electromagnetic waves or reduce the infrared radiation of weapons and equipment, making it difficult for enemy detection systems to find them.

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