In recent years, countries around the world are transforming from traditional ceramics to new ceramics. Ceramics are no longer limited to art, daily life and other fields. Industrial ceramics are widely used in thermal conductivity, thermomechanics, sensitive sensors, and optics due to their good heat resistance, biocompatibility and other properties. , medical fields, new energy and other fields have become the focus of research in various countries.
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Industrial new ceramic materials In terms of high temperature resistance, corrosion resistance, wear resistance, super hardness, and superconductivity, they are far superior to traditional ceramics and existing metals. Or non-metallic materials are superior. New ceramics also have properties such as photosensitivity, gas sensitivity, heat sensitivity, moisture sensitivity, and piezoelectricity. These properties are also the basis for manufacturing artificial intelligence materials. Therefore, currently some countries, especially those with more developed economies and technologies, place the development of new ceramic materials in an important strategic position and divert a large number of engineering and technical personnel and funds to new ceramic materials< /strong>Research and development.
Precision ceramics, also known as high-performance ceramics, engineering ceramics, etc., in terms of main components: can be divided into carbides, nitrides, oxides and boride etc. In terms of use, they can be divided into structural ceramics, cutting ceramics and functional ceramics. Ordinary ceramics are used in building materials and light industryThe industry has been widely used. But as precision ceramics, its main difference from ordinary ceramics is that the raw materials of precision ceramics have been strictly selected, that is, to maximize the acquisition of high-purity raw materials that meet the requirements, and the particle size of the materials used is as small as possible. It may be fine. Secondly, its chemical composition must be precisely controlled to avoid the mixing of undesirable impurities and the flying or volatilization loss of each component. The third step is to control the formation of fine structures. The particle size of the sintered particles, particle interfaces, pores, etc. must be controlled. Be very careful. Thanks to this series of efforts, the various excellent properties unique to ceramics can be fully demonstrated.
With the development of modern industrial technology, some of the requirements for material properties have exceeded those of metal materials or plastics. For example, high-efficiency kilns aimed at energy saving require materials to work at high temperatures above 1500°C, but the high-temperature performance limit of metal materials is only around 1200°C, so these high-temperature mechanical components only help ceramic materials. In addition to high temperature resistance, corrosion resistance, wear resistance and other properties are also higher than those of metal materials.
