Effect on wettability of borosilicate glass on kovar alloy using electron beam surface texturing

The wettability of glass on metal can be enhanced by increasing the area of real intimate contact. The paper presented electron beam texturing on Kovar alloy to improve the surface micro-roughness. The wetting behavior of borosilicate glass on textured Kovar alloy was investigated by sessile drop method. The results indicated that the increase of effective contact area by using electron beam texturing facilitated the spreading of molten glass. The contact angle decreases continuously with the increase of heating temperature and holding time. The main reaction products between glass and oxide layer are Fe₂SiO₄. The high-energy beam texturing and pre-oxidation on the metal surface promoted the mechanical-chemical bonding of glass and metal effectively, which improves the connection strength of glass and metal.