1. Overview of material surface engineering technology
As we all know, metal materials will undergo chemical and electrochemical reactions with the surrounding medium to be corroded. In addition, the metal surface will also cause wear due to various mechanical actions. For damaged parts, surface coatings and coatings in material surface engineering technology can be used , Diffusion of surface dissimilar materials, surface modification or several composite methods, repair the surface of the material, change the shape, chemical composition, and structure of the material surface to obtain the required structure and performance; modern surface technology has prepared Many new materials and new devices are applied to high-tech fields such as optical, magnetic recording, liquid crystal display, solar materials, high-temperature and wear-resistant aviation (gas turbines), rocket engines and other high-tech fields. They are currently one of the effective technologies for energy conservation and resource conservation. ; The industrial sector increasingly requires mechanical equipment to operate stably under high parameters (high temperature, high pressure, high speed and high automation) and harsh working conditions (such as severe wear and corrosion). Surface treatment technology It has great technical and economic significance. The surface treatment technology has also been rapidly developed and improved under this demand.
2. Classification of material surface technology
3. The function of material surface technology:
Many surface technologies, such as surfacing welding, laser cladding, thermal spraying, etc., have repair functions, which can not only repair dimensional accuracy, but also often improve surface performance and extend service life.
