Formation Reason and Improvement Method of Stomata in Extrusion Silver Graphite Solder Layer
The vertical fiber reinforced silver graphite product was prepared by extrusion method. The conventional process is: mixing powder - isostatic press-sintering - extrusion - slicing - decarburization - cutting - solder coating and there are obvious pores near the silver layer of solder coating on the back of the product. Compare the effects of adding sintering with 3 different temperatures and increasing the thickness of decarburized layer on the porosity of the solder layer. The results show that the porosity in the silver layer is smaller through increasing sintering after decarburization, and the single pore gas discharged into the solder layer is relatively less when the solder is coated, and the silver spot size is affected by different temperatures. Increasing the thickness of the decarburized layer do not significantly reduce the size and number of pores in the solder layer.
extrusion methodelectric contactvertical extrusion type silver graphitestomata
万方数据
维普
