Research on A Series of V-B Solder Used in Vacuum Electronic Devices
A series of V-B solder were melted by vacuum-filling argon and solder powder was made by ball milling technology.The results show that the solderability of series of V-B solder is excellent,massive series of V-B solder are instantly melted and quickly spreaded,the fluidity and wettability is good,the surface is uniform.The melting point of V-B-Pd solder is 1730℃,the melting point of V-B solder is 1740 ℃.The powder of V-B solders is spreaded uniformly,it has significant wetting ring,the spreading area is 3/4 of matrix area,the melting point is 1560 ℃.