Significance of Adhesion Mechanism and Its Application in Practice
Release time:
2026-04-09 16:19
Source:
Glass and Enamel
(Continued from previous article)
3.Significance of Adhesion Mechanism and Its Application in Practice
3.1 Significance of Adhesion Mechanism
Adhesion is a very important factor determining the performance of enamel. Therefore, understanding and further studying the adhesion mechanism is of great help to the quality of enamel products. If there is a complete understanding and knowledge of the adhesion mechanism, these mechanisms can be better applied to guide actual production, reduce enamel defects, improve production efficiency, and realize production automation.
3.2 Application of Adhesion Mechanism in Practice
Before enamel coating, chemical and physical treatment methods are used on the substrate to create a rough surface. A certain amount of bonding oxides (commonly CoO and NO) are often added to porcelain enamel. Some substances are added to the enamel formula, and some are added to the workpiece. Among the substances used, cobalt, nickel, and their oxides are the most frequently involved.
4. Conclusion
From the above discussion, it can be seen that there are still disagreements regarding the bonding mechanism of enamel. Based on years of research, Shao Guixian put forward his own views and summarized the various theories as follows:
(1) An important prerequisite for the porcelain enamel to adhere firmly to the metal and have sufficient strength is that the porcelain enamel and the metal surface must be able to wet each other, forming a bond with the lowest energy.
(2) The three stages of coating, firing, and cooling all affect the performance of the enamel.
(3) The bonding layer between the porcelain enamel and the metal is itself a complex system. This complex system is formed under different conditions of porcelain enamel, metal, and process, thus exhibiting specificity and diversity.
(4) Three bonding forces exist simultaneously in the enamel bonding layer—chemical bond force, molecular force, and mechanical force. Chemical bond force is the main force, while molecular force and mechanical force are secondary. The combination of these three forces results in a firm bond between the porcelain enamel and the metal.
Previous Page
Previous Page
RELATED INFORMATION
Tel: +86-731-53584517
Mobile: +8613421364360
WeChat: +8613421364360
Email:
messi@lifafrit.com
katharine@lifafrit.com
0