ZHENGSHAN TECHNOLOGY

The formula of electrode paste has a significant impact on the sintering process and the quality of the final product. Different electrode paste formulations mainly involve adjusting the following components: the type and content of ceramic powder, the type and proportion of binder, the amount of plasticizer and diluent used, and other additives. The following are several key impacts:

1. The influence of ceramic powder
Types: Different types of ceramic powders (such as aluminum oxide, silicon dioxide, silicon nitride, etc.) have different thermal expansion coefficients, sintering activities, and electrical insulation properties, which will affect the physical and chemical properties of the sintered electrodes.
Content: The amount of ceramic powder directly affects the density and mechanical strength of the sintered body. Excessive content may lead to excessive shrinkage during the sintering process, causing cracks; If the content is too low, it may lead to insufficient density of the sintered body, affecting the electrical insulation performance.
2. The influence of adhesives
Type: The selection of binders (such as organic resins, rubber, etc.) is related to the formability of the paste and the maintenance of bonding performance during the sintering process. Different binders exhibit different decomposition or carbonization behaviors during the sintering process, which will affect the density and final performance of the sintered body.
Ratio: Excessive proportion of binder may lead to excessive residue after sintering, affecting the electrical insulation performance of the electrode; If the ratio is too low, it may make it difficult for the paste to form, and it is prone to cracking during the sintering process.
3. Effects of plasticizers and diluents
Plasticizer: can increase the fluidity and ductility of the paste, making it easier to apply and shape. However, excessive use may lead to an increase in residue after sintering, affecting electrode performance.
Diluent: used to adjust the viscosity of the paste to make it easier to apply. Improper types and ratios of diluents may lead to a decrease in the performance of sintered materials.
4. The impact of other additives
Release agent: used to facilitate the removal of electrode paste from the mold, but if not used properly, it may remain in the product after sintering, affecting the electrical insulation performance.
Catalyst: For certain special formulations of electrode paste, catalysts may be needed to promote chemical reactions during the sintering process. The selection and dosage of catalysts will directly affect the reaction rate and sintering effect.
5. The influence of sintering atmosphere
In addition to the formula components, the sintering atmosphere (such as air, nitrogen, hydrogen, etc.) can also affect the sintering process and the performance of the final product. Different atmospheres can affect the oxidation-reduction reaction, sintering activity, and color change of materials.

In summary, different electrode paste formulations will have a significant impact on the sintering process and the performance of the final product. Therefore, when selecting and adjusting the electrode paste formula, it is necessary to fully consider the properties of the material, sintering process, and application requirements in order to achieve the best sintering effect.