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. 2017 Apr 13;10(4):406. doi: 10.3390/ma10040406

Figure 38.

Figure 38

Variation in rust layer structure with atmospheric salinity: 44 mg Cl/m2·d (a); 110 mg Cl/m2·d (b); 173 mg Cl/m2·d (c); 245 mg Cl/m2·d (d); 889 mg Cl/m2·d (e); 1136 mg Cl/m2·d (f). Carbon steel specimens were exposed for three months in different marine atmospheres. The circles indicate the content of different phases in the rust, information obtained by XRD (RIR) of powdered rust [64]. L: lepidocrocite; G: goethite; A: akaganeite; M: magnetite and Mh: maghemite.