Application of white corundum in ceramic coatings
The application of white corundum in ceramic coatings is mainly reflected in the following aspects:
1. Enhance the wear resistance and hardness of the coating
Improve surface wear resistance
White corundum is added to the ceramic coating as a high-hardness filler, which can significantly improve the wear resistance of the coating surface, making it suitable for scenes with high-frequency friction (such as mechanical parts coating, ground protective coating, etc.).
Optimize the structural strength of the coating
White corundum powder can reduce the porosity and increase the density of the coating by filling the pores of the ceramic coating, thereby improving the overall compressive strength and durability.
2. Improve high temperature stability and chemical stability
High temperature resistance
White corundum can still maintain stable physical and chemical properties at high temperatures, and is suitable for ceramic coatings in high temperature environments (such as furnace parts, refractory pipe coatings, etc.).
Corrosion resistance
The chemical inertness of white corundum can enhance the coating’s resistance to corrosive media such as acids and alkalis, and extend the service life of the coating in harsh environments (such as chemical equipment coatings).
3. Improve the function and aesthetics of coatings
Glaze composition optimization
As a glaze additive, white corundum can improve the surface finish, glossiness and decorative effect of ceramic coatings, while reducing glaze defects during firing.
Functional adjustment
By adjusting the particle size and addition ratio of white corundum, the conductivity, dielectricity and other properties of the coating can be customized to meet the special needs of electronic ceramic coatings (such as sensor and capacitor coatings).
4. Application scenario examples
Industrial protective coatings: used for the preparation of wear-resistant coatings such as mechanical parts and automotive parts.
Electronic ceramic coatings: functional coatings used for electronic components such as dielectric ceramics and varistors.
High-temperature refractory coatings: protective layers used for high-temperature equipment (such as kiln linings and refractory pipes).
Through the above applications, white corundum not only improves the physical properties of ceramic coatings, but also expands its functional use scenarios in the industrial, electronic and high-temperature fields.