Corrosion prediction for preventive protection of aircraft heritage

Heritage Science

Table 7 Surface removal rates on aluminum

RH [\(\%\)]	0	25	50	75	90
\({\hbox {SO}}_{2}\)
\(v_d\) [\({\hbox {cm}}\,{\hbox {s}}^{-1}\)] ^a	0	0.001	0.002	0.007	0.01
\(n_s\) [\({\hbox {h}}^{-1}\)]^d	0	0.013	0.026	0.092	0.131
\({\hbox {NO}}_{2}\)
\(v_d\) [\({\hbox {cm}}\,{\hbox {s}}^{-1}\)]^b	0	0.0005	0.0015	0.0027	0.0034
\(n_s\) [\({\hbox {h}}^{-1}\)]^d	0	0.007	0.02	0.035	0.045
\({\hbox {O}}_{3}\)
\(v_d\) [\({\hbox {cm}}\,{\hbox {s}}^{-1}\)]^c	0.00063	0.00068	0.0014	0.0032	0.0054
\(n_s\) [\({\hbox {h}}^{-1}\)]^d	0.008	0.009	0.018	0.041	0.071

^a\({\hbox {SO}}_{2}\) deposition velocities on aluminum.
^b\({\hbox {NO}}_{2}\) deposition velocities on aluminum.
^c\({\hbox {O}}_{3}\) deposition velocities on aluminum.
^dSurface removal rates given by (1) where \(A = 2976 ~{{\hbox {m}}^{2}}\) and \(V = 7884.8 ~ {{\hbox {m}}^{3}}\)