ZHENGSHAN TECHNOLOGY

The electrode paste will form electrode products after sintering, and its quality directly affects the performance and service life of the electrode. Therefore, it is necessary to conduct strict quality testing on the sintered electrode products. The following are some quality inspection standards for electrode paste after sintering.

Density testing
Density is one of the important indicators for evaluating the quality of electrode products. High density electrodes typically have better mechanical strength and conductivity. The density of electrodes is generally measured using drainage or weighing methods.

Bending strength testing
The flexural strength reflects the ability of the electrode to resist fracture under stress. The bending strength data of electrode samples can be obtained by testing them using a four point bending tester.

Resistivity detection
Electrical resistivity is an important parameter for measuring the conductivity of electrodes. Generally, the four terminal method or two wire method is used to measure the resistivity of electrodes.

Thermal expansion coefficient detection
The coefficient of thermal expansion reflects the dimensional stability of the electrode during temperature changes. By measuring the size changes of electrodes at different temperatures, the coefficient of thermal expansion can be calculated.

Corrosion resistance testing
Corrosion resistance is an important indicator for evaluating the service life of electrodes in harsh environments. The corrosion resistance of electrodes can be evaluated through immersion tests or cyclic corrosion tests.

Surface quality inspection
Surface quality includes inspection of appearance, detection of defects such as cracks, bubbles, and depressions. Visual inspection combined with a magnifying glass or microscope is usually used to observe surface details.

Dimensional accuracy testing
According to the drawing requirements, accurately measure the dimensions of the electrode product, including length, diameter, aperture, etc., to ensure that the product meets the design requirements.

Sintering degree detection
Sintering degree refers to the degree of shrinkage and density increase of electrode paste during the sintering process. By comparing the weight and size of the electrodes before and after sintering, it is possible to evaluate whether the sintering degree meets the standard.

In summary, the quality inspection of electrode paste after sintering is a comprehensive evaluation work, involving multiple aspects such as physical properties, chemical properties, and geometric dimensions. Only through strict testing procedures can the quality of electrode products meet the needs of various application scenarios.