Corrosion Behaviour of a Highly Alloyed Austenitic Alloy UB6 in Contaminated Phosphoric Acid

Table 4

Donor and acceptor density of the oxide films formed on UB6 stainless steel at different temperatures between 20 and 80°C.

Temperature	𝑁𝐴 (10^20·cm^−3)	𝑁𝐷 (10^20·cm^−3)	𝐶1sc(outer) (µF·cm^−2)	𝐶2sc(innerr) (µF·cm^−2)	𝑑1(outer) (nm)	𝑑2(innerr) (nm)
20°C	5.54	2.03	24.66	20.89	0.67	0.66
40°C	9.33	3.95	20.61	29.55	0.66	0.46
60°C	10.3	4.71	18.6	36.52	0.60	0.37
80°C	24.3	5.60	17.0	75.21	0.57	0.18