Research Article

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

Figure 5

Spectra of (a) Zn 2p and (b) Bi 4f in SBZ sample oxidized at 170°C for 7 min after etching for various time.
(a)
(b)