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The Mechanism of Oxide Growth on Pure Aluminum in Ultra-High-Temperature Steam
| Content Provider | MDPI |
|---|---|
| Author | Huang, Lin Xiong, Ke Wang, Xiaofeng He, Xi Yu, Lin Fu, Chaokun Zhu, Xiaodong Feng, Wei |
| Copyright Year | 2022 |
| Description | A high-temperature water steam $(H_{2}$O(g)) between 300 °C and 1000 °C reacted with the Al surface in this study. The Al surface states were characterized and analyzed using XRD °C, XPS, and SEM after and before the reaction, and the effects and mechanism of $H_{2}$O(g) on the Al surface morphology and chemical composition were studied. The experiment showed that for an Al sheet reacting with $H_{2}$O(g), its oxide layer morphology changed from nano-needle to flaky and granular oxides gradually with the rise of temperature, and finally the Al surface became porous as a whole. Its oxide crystals were amorphous and were determined to be aluminum oxide $(Al_{2}O_{3}$) using XPS. The needle-like oxide in the Al sheet surface tended to grow toward the surface, and no obviously inward oxidizing corrosion layer occurred in the aluminum substrate; the oxide layer between the oxide and Al sheet substrate was compact, and could effectively prevent the infiltration and corrosion of water molecules. |
| Starting Page | 1049 |
| e-ISSN | 20754701 |
| DOI | 10.3390/met12061049 |
| Journal | Metals |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-19 |
| Access Restriction | Open |
| Subject Keyword | Metals High Temperature Water Steam Corrosion Surface States Oxide Layer |
| Content Type | Text |
| Resource Type | Article |
