Abstract
Ceramic materials have many advantages, such as high hardness, wear resistance, self lubrication in the process of friction, but there are also some inherent defects, such as brittle texture and poor toughness. By observing the microstructure of shell pearl layer, a kind of bionic composite ceramic with brick wall structure can greatly improve the natural defects of ceramic materials, and greatly expand the application range of ceramic materials. The tribological properties of materials are of great significance to the efficiency and service life of mechanical structures. Therefore, four kinds of ceramic composites with nacre shell structure with gradient concentration were prepared by freeze casting and standard polymerization, and the tribological properties of five materials were characterized. The experimental results show that when the loading load is large, the friction coefficient of material surface varies with the material With the increase of PMMA content, the friction coefficient of the material shows an upward trend.
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