The invention discloses an evaluation method for silver
powder sintering activity, and belongs to the technical field of silver
powder performance testing, the method comprises the following steps: putting silver
powder into a mold for
sintering, taking out a silver material after
sintering, immersing the silver material into an oily solution, discharging bubbles, taking out the immersed silver material, and removing the oily solution on the surface of the silver material to obtain a sintered silver sample; the volume
shrinkage rate of the sintered silver sample is calculated by utilizing the volumes of the silver powder and the silver sample before and after sintering, and the sintering activity of the silver powder is evaluated by utilizing the volume
shrinkage rate. According to the method, the sintering activity of the silver powder is evaluated by measuring the volume
shrinkage rate after sintering according to the
volume change of the silver powder before and after sintering, the volume shrinkage rate is large, and the sintering activity is high; the method has the advantages of small volume shrinkage, low sintering activity, high efficiency, objectivity and quantifiability.