High temperature conductive silver paste avoids excessive oxidation of silver particles during high-temperature sintering process

1、 Introduction

High temperature conductive silver paste plays a crucial role in numerous electronic and electrical applications, such as in the manufacturing process of components such as solar cells and surface mount inductors. However, during the high-temperature sintering process, silver particles are prone to oxidation, which can affect important characteristics such as the conductivity of silver paste. Advanced Institute (Shenzhen) Technology Co., Ltd. has conducted in-depth research in this areaResearch Platinum YB8606 High Temperature Conductive Silver PasteHas excellent performance in avoiding excessive oxidation of silver particles.

2、 The hazards of oxidation of silver particles during high-temperature sintering process

1. Decreased conductivity
   • After oxidation, silver particles will form silver oxide, which has much lower conductivity than silver. When silver particles undergo excessive oxidation, the originally continuous conductive network is disrupted, hindering electron transfer and resulting in a significant decrease in the conductivity of the entire high-temperature conductive silver paste. For example, in some electronic components that require extremely high conductivity, such as high-frequency circuits, the decrease in conductivity may cause the components to malfunction.
2. Influence binding force
   • The binding force between oxidized silver particles and surrounding materials will also change. existHigh-temperature sintered silver pasteWhen used to connect different components (such as in the case of silver paste connecting glass and electrodes in automotive glass defogging lines), changes in the binding force of silver particles may lead to unstable connections, thereby affecting the service life and reliability of the product.

3、 Response strategy of Advanced Institute (Shenzhen) Technology Co., Ltd

1. composition optimization
   • Research Platinum YB8606 High Temperature Conductive Silver Paste:
     • Advanced Institute (Shenzhen) Technology Co., Ltd. has carefully optimized the formula design of YB8606 high-temperature conductive silver paste for platinum brand research. In terms of silver powder selection, high-purity silver powder with reasonable particle size distribution was chosen. Appropriate particle size distribution helps to form a denser silver particle stacking structure during sintering, reducing the contact area between oxygen and silver particles.
     • At the same time, specific antioxidants were added to the formula. These antioxidants can preferentially react with oxygen or form a protective film on the surface of silver particles to prevent further erosion by oxygen. For example, certain organic antioxidants can decompose and release reducing substances at lower temperatures, reacting with surrounding oxygen to protect silver particles.
2. Sintering environment control
   • Atmosphere control:
     • During the high-temperature sintering process,Advanced Institute (Shenzhen) Technology Co., LtdAdopt special atmosphere protection measures. For the YB8606 high-temperature conductive silver paste from Yanbo brand, they will create a specific atmosphere in the sintering furnace, such as a nitrogen atmosphere. Nitrogen is an inert gas that can effectively eliminate oxygen in the sintering environment and reduce the chance of silver particles coming into contact with oxygen. Compared with ordinary air atmosphere, sintering under nitrogen atmosphere can significantly reduce the degree of oxidation of silver particles.
   • Temperature time curve optimization:
     • By precisely controlling the temperature time curve of sintering, excessive oxidation of silver particles can be avoided. For the YB8606 high-temperature conductive silver paste of the Research Platinum brand, the company has determined the optimal sintering temperature range and time through extensive experiments. For example, using a lower heating rate in the early stage of sintering allows the organic components in the silver paste to slowly decompose and evaporate, while avoiding accelerated oxidation of silver particles due to local high temperatures during this process. After reaching the appropriate sintering temperature, strict control of the holding time can ensure good bonding between silver particles and prevent excessive oxidation caused by prolonged exposure to high temperatures.

4、 Conclusion

existHigh temperature conductive silver pasteIt is crucial to avoid excessive oxidation of silver particles during the high-temperature sintering process to ensure the performance of the silver paste. Advanced Institute (Shenzhen) Technology Co., Ltd. has effectively reduced the oxidation of silver particles and improved the performance of high-temperature conductive silver paste by optimizing the composition and controlling the sintering environment of YB8606 high-temperature conductive silver paste. This not only helps to enhance the competitiveness of the company's products in the market, but also provides useful reference for the entire high-temperature conductive silver paste industry in addressing the issue of silver particle oxidation. With the continuous development of technology, it is believed that there will be more effective methods in the future to further improve the stability and performance of high-temperature conductive silver paste during high-temperature sintering process.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.