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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kim, Daejong Jang, Changheui Ryu, Woo Seog |
| Copyright Year | 2009 |
| Abstract | To evaluate the oxidation resistance of Alloy 617 and Haynes 230, oxidation tests were performed at 900 °C and 1100 °C in air and helium environments. Scale characterizations were assessed on specimens exposed to air using thin-film XRD, XPS, SEM and EDX. Oxidation resistance was dependent on the stability of the surface oxide layer, which can be affected by minor alloying elements such as Ti and Mn. At 900 °C, for Alloy 617, a mixture of the extensive NiO–Cr$_{2}$O$_{3}$ double layer and isolated NiO–NiCr$_{2}$O$_{4}$–Cr$_{2}$O$_{3}$ triple layer were observed at a steady-state condition. For Haynes 230, a MnCr$_{2}$O$_{4}$ layer was formed on top of the Cr$_{2}$O$_{3}$ layer, resulting in a lower oxidation rate. At 1100 °C, both alloys showed a double layer consisting of an inner Cr$_{2}$O$_{3}$ and outer MnCr$_{2}$O$_{4}$ or TiO$_{2}$. The spallation of outer layer and subsequent volatilization of the Cr$_{2}$O$_{3}$ layer produced a rugged surface and interface as well as internal oxidation. |
| Starting Page | 271 |
| Ending Page | 293 |
| Page Count | 23 |
| File Format | |
| ISSN | 0030770X |
| Journal | Oxidation of Metals |
| Volume Number | 71 |
| Issue Number | 5-6 |
| e-ISSN | 15734889 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2009-02-11 |
| Publisher Place | Boston |
| Access Restriction | Subscribed |
| Subject Keyword | Oxidation characteristics Oxide layer evolution Spallation Alloy 617 Haynes 230 Tribology, Corrosion and Coatings Inorganic Chemistry Metallic Materials |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Chemistry Metals and Alloys Inorganic Chemistry |
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