The adhesion of palladium-silver paste is related to its formulation and usage conditions. The following are some factors that affect the adhesion of palladium-silver paste: Formula: The formulation of palladium-silver paste usually includes adhesives and auxiliary agents that match the base material. These components can provide excellent adhesion, enabling the palladium-silver paste to firmly adhere to the base material.

Surface treatment: Before using the palladium-silver paste, the surface treatment of the base material is of great importance. Surface treatment can remove dirt and oxides, increase surface energy, and enhance the adhesion between the palladium-silver paste and the base material. Common surface treatment methods include chemical cleaning, mechanical grinding, and chemical treatment, etc.

Sintering conditions: Sintering is the process by which the palladium-silver paste forms a ceramic structure, and it is also the key to achieving good adhesion with the substrate material. Appropriate sintering temperature and time can enable the palladium-silver particles to be closely combined with the substrate material, thereby enhancing adhesion. Excessive sintering temperature may lead to the diffusion and destruction of the bonding interface, resulting in a decrease in adhesion.

Stress Management: The adhesion of palladium-silver paste is also affected by stress. Excessive mechanical stress or thermal stress may cause the separation and fracture between the palladium-silver paste and the base material. Therefore, stress needs to be properly managed during design and usage to maintain the adhesion of the palladium-silver paste.

Overall, the formulation, surface treatment, sintering conditions, and stress management are the key factors influencing the adhesion of palladium-silver paste. By appropriately selecting and optimizing these factors, the adhesion of the palladium-silver paste can be enhanced, ensuring its stability and reliability in application.