As a commonly used thermal insulation material, ceramic fiber blanket is widely used in many industrial fields and high-temperature environments.
Ceramic fiber blanket has good high temperature resistance and heat insulation properties, but in actual use, its surface is easily worn, affecting its service life and performance. Through a specific surface treatment process, the wear resistance of ceramic fiber blanket can be effectively improved, so that it can better adapt to various complex working environments.
A common surface treatment process is coating treatment. A wear-resistant coating, such as silicon carbide coating or aluminum oxide coating, is applied to the surface of ceramic fiber blanket. These coatings have high hardness and good wear resistance, and can form a protective film on the surface of the fiber blanket. When subjected to external friction, the coating first bears wear, thereby protecting the internal ceramic fiber from damage. For example, in some high-temperature furnace insulation applications, ceramic fiber blanket treated with silicon carbide coating can resist the scouring of airflow in the furnace and the collision of materials, greatly improving the wear resistance.
Chemical treatment is also an important method to improve the wear resistance of ceramic fiber blanket. By means of chemical impregnation or surface modification, the chemical composition of the ceramic fiber surface is changed, thereby improving its hardness and wear resistance. For example, the ceramic fiber blanket is treated with a silane coupling agent to form a chemically bonded silicone layer on the fiber surface. This layer of silicone can not only improve the bonding force between the fiber and the matrix, but also increase the smoothness of the fiber surface, reduce the friction coefficient, and reduce the degree of wear. At the same time, chemical treatment can also improve the surface structure of the fiber, making it denser and further improving the wear resistance.
Appropriate heat treatment process can also help improve the wear resistance of ceramic fiber blanket. Heat treatment of ceramic fiber blanket at high temperature can make the crystal structure inside the fiber more stable and improve the strength and hardness of the fiber. For example, ceramic fiber blanket that has been sintered at high temperature has a higher degree of crystallinity, a smoother surface, and significantly improved wear resistance. In addition, heat treatment can also eliminate stress inside the fiber and reduce fiber breakage and wear caused by stress concentration during use.
Surface modification treatment is to improve the wear resistance of ceramic fiber blanket by changing the physical and chemical properties of the surface. For example, plasma treatment technology is used to introduce some active groups on the surface of ceramic fiber blanket. These groups can react chemically with other substances to form a modified layer with good wear resistance. At the same time, plasma treatment can also improve the roughness of the fiber surface, making it more uniform and reducing the possibility of local wear. In addition, surface modification of ceramic fiber blanket by ultraviolet radiation and other methods can also improve its surface crosslinking and hardness, thereby enhancing its wear resistance.
In order to further improve the wear resistance of ceramic fiber blanket, a composite treatment method combining multiple surface treatment processes can be adopted. For example, the ceramic fiber blanket is first chemically treated and then coated, which can give full play to the advantages of the two processes. Chemical treatment can improve the properties of the fiber surface and improve the bonding strength between the coating and the fiber, while the coating provides direct wear protection. The ceramic fiber blanket after composite treatment has much higher wear resistance than a single treatment process, and can better meet some application scenarios with high requirements for wear resistance, such as aerospace, metallurgy and other fields.
The surface treatment process of ceramic fiber blanket improves the wear resistance of ceramic fiber blanket from different angles through coating treatment, chemical treatment, heat treatment, surface modification treatment and composite treatment. These surface treatment processes can not only protect the surface of ceramic fiber blanket and extend its service life, but also enable it to maintain good performance in various harsh working environments, providing a strong guarantee for the wide application of ceramic fiber blanket in many fields.
