XPS Depth Study on the Liquid Oxidation of Sn-Bi-Zn-X(Al/P) Alloy and the Effect of Al/P on the Film

Table 1

XPS binding energy values for solder elements and the oxidative products obtained from literatures (Al, O data from NIST Standard Reference Database 20, V. 3.5).

	Sn 3d5/2 (eV)	Zn 2p3/2 (eV)	Bi 4f7/2 (eV)	Al 2p (eV)	O 1s
Sn [15]	484.8		—
SnO [15, 19]	486.6/486		—		530.1
SnO2 [15, 19]	486.4/487.1				531.0
Zn [20]		1021.45
ZnO [20]		1021.7			530.7
Bi [10]			156.8
Bi2O3 [10, 17]			159.5		529.8
Al [21]				73
Al2O3 [18]				76-77	532.6
O [15]					532.5