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Volume 12
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10.3390/met12061049
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Article

The Mechanism of Oxide Growth on Pure Aluminum in Ultra-High-Temperature Steam

by
Lin Huang
1,2,
Ke Xiong
1,2,
Xiaofeng Wang
1,2,
Xi He
1,2,
Lin Yu
1,3,
Chaokun Fu
2,4,
Xiaodong Zhu
1,2,* and
Wei Feng
1,2,*
1
School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
2
Sichuan Powder Metallurgy Engineering Technology Research Center, Chengdu 610106, China
3
Sichuan Yiran Material Technology Co., Ltd., Chengdu 610100, China
4
Sichuan KunTian Cemented Carbide Co., Ltd., Yibin 644001, China
*
Authors to whom correspondence should be addressed.
Metals 2022, 12(6), 1049; https://doi.org/10.3390/met12061049
Submission received: 9 May 2022 / Revised: 16 June 2022 / Accepted: 16 June 2022 / Published: 19 June 2022
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Abstract

A high-temperature water steam (H2O(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 H2O(g) on the Al surface morphology and chemical composition were studied. The experiment showed that for an Al sheet reacting with H2O(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 (Al2O3) 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.
Keywords: Al; high temperature water steam; corrosion; surface states; oxide layer Al; high temperature water steam; corrosion; surface states; oxide layer

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MDPI and ACS Style

Huang, L.; Xiong, K.; Wang, X.; He, X.; Yu, L.; Fu, C.; Zhu, X.; Feng, W. The Mechanism of Oxide Growth on Pure Aluminum in Ultra-High-Temperature Steam. Metals 2022, 12, 1049. https://doi.org/10.3390/met12061049

AMA Style

Huang L, Xiong K, Wang X, He X, Yu L, Fu C, Zhu X, Feng W. The Mechanism of Oxide Growth on Pure Aluminum in Ultra-High-Temperature Steam. Metals. 2022; 12(6):1049. https://doi.org/10.3390/met12061049

Chicago/Turabian Style

Huang, Lin, Ke Xiong, Xiaofeng Wang, Xi He, Lin Yu, Chaokun Fu, Xiaodong Zhu, and Wei Feng. 2022. "The Mechanism of Oxide Growth on Pure Aluminum in Ultra-High-Temperature Steam" Metals 12, no. 6: 1049. https://doi.org/10.3390/met12061049

APA Style

Huang, L., Xiong, K., Wang, X., He, X., Yu, L., Fu, C., Zhu, X., & Feng, W. (2022). The Mechanism of Oxide Growth on Pure Aluminum in Ultra-High-Temperature Steam. Metals, 12(6), 1049. https://doi.org/10.3390/met12061049

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