Effects of Na-Ca System Glass Powder on Properties of Silver Paste

The glass powder as a binder phase in the silver paste mainly plays the role of binding. The composition, content and particle size of the glass powder have significant effects on the properties of the silver paste. In this paper, the effects of the sintering temperature, holding time, glass powder content and glass powder size on the adhesion and square resistance of the silver film were studied. The research results showed that when the glass powder content was 6%(in mass) of the total silver paste, the sintering temperature was 680°C, the holding time was 7 minutes and the glass powder size was 2.47μm, the silver paste can get good properties. The adhesion strength and square resistance of the silver film were respectively 2.5 N/mm2 and 14 mΩ /.