A comparison of the high-temperature oxidation of 17Cr-2Ni and 18Cr-8Ni austenitic stainless steels at 973 K
- Centro de Investigacion y Ensayos, Cadiz (Spain)
- Univ. Complutense, Madrid (Spain). Dept. de Ciencia de Materiales
The oxidation behavior in air at 973 K of the austenitic stainless steels 18Cr-8Ni and 17Cr-2.5Ni-10.5Mn-2Cu-0.17N (low-nickel content), was studied in a thermobalance. The steels were heated from room temperature up to 973 K at 10 K min{sup {minus}1}, oxidized for 80 hr and then cooled to room temperature at 80 K min{sup {minus}1}. The two steels had the same weight gains, 0.18 mg cm{sup {minus}2}, which is equivalent to oxidation layers about 1.15 {micro}m theoretical thickness. In both cases, the general shapes of the {Delta}W S{sup {minus}1} (mg cm{sup {minus}2}) curves vs. t (hours) were parabolic, but X-ray diffraction of the oxidized surfaces, surface and cross-section optical microscopy and SEM observations and EDS microanalysis show important differences between them.
- OSTI ID:
- 642112
- Journal Information:
- Oxidation of Metals, Vol. 49, Issue 3-4; Other Information: PBD: Apr 1998
- Country of Publication:
- United States
- Language:
- English
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