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. 2020 Jul 10;10(44):26078–26089. doi: 10.1039/d0ra04215c

The contribution of the fitted peaks for the corrosion layer, at%.

Measurement O 1s Al 2p P 2p Mo 3d5/2
O salt O oxide Al(iii) P(v) Mo(v) Mo(vi)
Area 1 23.1 61.5 3.3 4.4 1.5 6.2
Area 2 52.3 24.7 4.8 6.1 2.1 10.0
Area 3 (pre-sputtered) 58.5 15.4 5.4 8.6 0.5 11.6