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

Table 2

The comparison of solidus temperature (𝑇_onset), liquidus temperature (𝑇_end), pasty ranges (𝑇_end−𝑇_onset), melting temperature (𝑇_𝑚), 𝐴/𝑚, and Δ𝐻 among various solder alloys.

Solder alloys	𝑇 onset (°C)	𝑇 end (°C)	𝑇 end− 𝑇onset (°C)	𝑇𝑚 (°C)	𝐴/𝑚 (J/g)	Δ𝐻 (J/g)
Sn-9Zn	198.3	200.3	+2.0	199.8	70.2	185.3
Sn-9Zn-0.25Ga	196.7	200.1	+3.4	199.6	67.6	178.5
Sn-9Zn-0.50Ga	195.8	199.7	+3.9	198.8	62.4	164.7
Sn-9Zn-0.75Ga	193.1	198.3	+5.2	197.8	59.8	157.8
Sn-9Zn-1.00Ga	192.1	197.8	+5.7	196.8	57.2	151.0