High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel

Figure 3

Surface morphology of oxide films at 850°C for (a–c) 5 h, (d–f) 20 h, (g–i) 70 h, and (j–l) 140 h in air.

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(f)

(g)

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(i)

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(l)