The Effects of Gallium Additions on Microstructures and Thermal and Mechanical Properties of Sn-9Zn Solder Alloys

Figure 4

The SEM micrographs of the (a) Sn-9Zn, (b) Sn-9Zn-0.25Ga, (c) Sn-9Zn-0.50Ga, (d) Sn-9Zn-0.75Ga, and (e) Sn-9Zn-1.00Ga solder alloys.

(a)

(b)

(c)

(d)

(e)