Thick film conductive gold paste for sensors: an efficient and reliable material for sensor manufacturing

Introduction: Sensors have become an essential part of our modern life, widely used in fields such as automobiles, smartphones, and home appliances. And the manufacturing of sensors cannot do without a type called sensor thick filmConductive gold pasteThe material has the characteristics of good density and smoothness in the fired film, and can match well with glass matrix, Al2O3 ceramic matrix, and ZrO matrix. This article will provide a detailed introduction to the technical parameters, process conditions, and importance of thick film conductive gold paste in sensor manufacturing.

1、 Technical parameters

The technical parameters of thick film conductive gold paste for sensors mainly include gold content, viscosity, and bulk resistance. The gold content of the thick film conductive gold paste for sensor YB-8820 is 80 ± 2%, which gives it better conductivity. Its viscosity is 80 ± 20Pa. s under 14 #/10r conditions, which helps to better coat the substrate during screen printing. The body resistance is less than 4.0 × 10-5m Ω, which enables stable conductivity of conductive gold paste in sensor manufacturing.

2、 Reference process conditions

The manufacturing process of thick film conductive gold paste for sensors requires strict control over the selection of substrate, as well as process conditions such as film formation, drying, and firing.

1. Substrate selection

Thick film conductive gold paste for sensors can be applied to various substrates, including glass substrates, Al2O3 ceramic substrates, and ZrO substrates. These substrates have good compatibility and can form a stronger bond with conductive gold paste.

2. Film formation method

The film formation method of thick film conductive gold paste for sensors adopts screen printing, with a mesh size of 250-300. By screen printingConductive gold pasteApply evenly on the surface of the substrate to form corresponding sensor electrodes.

3. Drying conditions

After film formation, it is necessary to dry the thick film conductive gold paste of the sensor. Usually, the drying temperature is between 150-200 ℃ and the time is 5 minutes. Drying helps the gold paste adhere to the substrate and maintain stable conductivity.

4. Sintering conditions

Sintering is a key step in the manufacturing process of thick film conductive gold paste for sensors. The sintering temperature is generally at the peak temperature of 850-900 ℃, with a holding time of 10 minutes and a sintering cycle of 45-60 minutes. After sintering, the conductive gold paste forms a dense film layer, which helps to improve the conductivity and stability of the sensor.

3、 The importance of thick film conductive gold paste for sensors

Thick film conductive gold paste plays a crucial role in sensor manufacturing. Due to its excellent density and smoothness of the fired film, it can ensure that the gold paste can firmly adhere to the surface of the substrate and provide stable conductivity. The good compatibility with glass substrate, Al2O3 ceramic substrate, and ZrO substrate helps to form more stable sensor electrodes. Therefore, the effective application of thick film conductive gold paste in sensors can not only improve the sensitivity and accuracy of sensors, but also extend their service life.

Summary:Thick film conductive gold paste for sensorsIt is a very important material in sensor manufacturing. By strictly controlling technical parameters and process conditions, it is possible to ensure that the conductive gold paste has good conductivity and stability. The widespread application of thick film conductive gold paste in sensors will bring us more efficient and reliable sensor products.