974 Gong, Yang, Yao and Yang Materials and Corrosion 2011.62. No. Figure 10. EDS results within the peanut-like concave: (a)site A, (b)site B, (c)site C,(d)site D, (e) site E, and(D site F Table 2. Chemical compositions within the peanut-like concave(wt%) O eeee r'' denotes the content lower than 0.5 wt%o o 2011 WILEY-VCH Verlag Gmbh Co KGaA, Weinheim www.matcorr.com974 Gong, Yang, Yao and Yang Materials and Corrosion 2011, 62, No. 10 Figure 10. EDS results within the peanut-like concave: (a) site A, (b) site B, (c) site C, (d) site D, (e) site E, and (f) site F Table 2. Chemical compositions within the peanut-like concave (wt%) Element O Na S Fe Cl Site A 36.12 2.03 4.90 56.95 / Site B 31.01 0.87 7.43 60.69 / Site C 36.50 1.40 4.83 57.27 / Site D 33.82 1.15 5.51 59.53 / Site E 29.71 0.56 2.38 67.35 / Site F 11.05 5.21 0.57 60.73 1.49 ‘‘/’’ denotes the content lower than 0.5 wt%. 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim www.matcorr.com