Low adhesion and diffusion to the dielectric glass layer during sintering were frequent problems in the silver slurry of 430 stainless steel heater. The effects of glass softening point, additive and silver powder on the properties of silver layer in 430 stainless steel heater were studied. It turned out the softening point of the glass and the additive of the silver slurry had important influence on the adhesion of the silver layer and the diffusion to the dielectric glass layer. Optimized formula with mixed silver powder, additives, choosing a glass powder that was suitable for softening points. The silver paste printability, sheet resistivity, adhesion, wettability and soldering resistance were all meet the requirements. |