Performance requirements of electrode paste for large-capacity industrial silicon furnaces
In modern industrial production, silicon is increasingly widely used, especially in the fields of electronics, photovoltaic and alloys.As an indispensable material in the production process, the electrode paste of large-capacity industrial silicon furnaces directly affects the yield and product quality of silicon.Therefore, it is particularly important to study and clarify the performance requirements of electrode paste.
First of all, the electrical conductivity of the electrode paste is one of its most important properties.Since the electrode paste needs to conduct current in a high temperature and high voltage environment, its electrical conductivity must meet certain standards.Good electrical conductivity can not only improve the thermal efficiency of the electrode, but also reduce power consumption, thereby improving the economy of production.When choosing the material of the electrode paste, priority should be given to those raw materials with excellent electrical conductivity, such as graphite and its composite materials.
Secondly, high temperature resistance is also an important performance requirement of electrode paste.The operating temperature of large-capacity industrial silicon furnaces is usually above 1500°C, so the electrode paste must have excellent high temperature resistance to prevent structural damage or performance degradation in high temperature environments.In addition, the stability of the electrode paste at high temperatures will affect the continuity and stability of the entire smelting process, so its melting point and coefficient of thermal expansion and other characteristics must be strictly evaluated.
Moreover, the adhesion of the electrode paste is also crucial.In the preparation process of the electrode, good adhesion ensures the stability of the electrode paste in the molding and sintering process, and prevents it from falling off or crushing at high temperatures.At the same time, the electrode paste with strong adhesion can improve the density and strength of the electrode, thereby enhancing its service life and carrying capacity.
In addition, the chemical stability of the electrode paste cannot be ignored.In a silicon furnace, the electrode will react with a variety of chemical components, and the electrode paste needs to have a certain chemical resistance to prevent it from being eroded or degraded during the reaction.This not only ensures the stability of the electrode, but also reduces the operational risks in the production process.
In summary, the performance requirements of electrode pastes for large-capacity industrial silicon furnaces cover many aspects such as conductivity, high temperature resistance, adhesion and chemical stability.These performance requirements not only directly affect the effectiveness and service life of the electrode, but also the production efficiency and economy of the entire silicon furnace.Therefore, in the development and production process of electrode paste, these performance requirements should be fully considered to meet the needs of modern industry for high-quality silicon production.
