Fine silver powderSintering silver paste at medium and high temperatures
Car glass silver pasteIt has a wide range of applications in various fields. This article will provide a detailed introduction to the average particle size, density, specific surface area, and particle shape of fine silver powder, and elaborate on its advantages and value in different application fields.
1. Control the average particle size within the ideal range
The average particle size of fine silver powder is crucial for its application effectiveness. According to the requirements, the average particle size of fine silver powder should be between 1.0-8.0 μ m. In the actual production process, we focus on three key indicators: D10, D50, and D90. The D10 value determines the minimum size of the powder particles, the D50 value represents the medium size of the powder particles, and the D90 value represents the maximum size of the particles. By controlling these three values, it is possible to ensure uniform particle size distribution of fine silver powder, thereby improving its sintering performance and conductivity.
2. Density advantage ensures stable product quality
Loose density and tap density are important parameters for evaluating powder density.
Fine silver powderThe loose density should be between 0.8-1.2 g/cm3, while the tap density should be between 1.2-1.8 g/cm3. High density can ensure the fluidity and packaging of fine silver powder during processing, thereby improving production efficiency and product quality stability. In addition, an appropriate density range can ensure the stability and durability of the product during use.
3. The specific surface area affects the coating performance
The specific surface area is an indicator for evaluating the size of fine silver powder particles, and its value should be between 0.4-1.0 m2/g. A larger specific surface area means more active sites and better coating performance, which can enhance the conductivity, adhesion, and oxidation resistance of the material. Fine silver powder has a large specific surface area, which can meet the requirements of coating performance in fields such as high-temperature sintered silver paste and car glass silver paste, making the product have excellent conductivity and durability.
4. Spherical or approximately spherical particle shape
The particle shape of fine silver powder is usually spherical or approximately spherical. This shape feature enables fine silver powder to have good dispersibility and filling properties, which can be evenly distributed in the coating, thereby improving conductivity and mechanical strength of the coating. In addition, spherical particles also have a low packing density, making them easy to wet on the surface, which is beneficial for improving the adhesion between particles and the flowability of materials.
Conclusion:
Fine silver powderIt has a wide range of advantages in the application of medium high temperature sintered silver paste and car glass silver paste. By controlling characteristics such as average particle size, density, specific surface area, and particle shape, products with stable performance, high conductivity, and durability can be obtained. Therefore, fine silver powder is an ideal choice for medium high temperature sintered silver paste and car glass silver paste.
Note: The above parameters are for reference only and need to be adjusted according to specific requirements for practical applications.
