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Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water
Alternative TitleCharacteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water
Zhong Xiangyu; Wu Xinqiang; Han Enhou
2018
Source PublicationJournal of Materials Science & Technology
ISSN1005-0302
Volume34Issue:3Pages:561-569
AbstractThe oxide films formed on Alloy 690 exposed to 600 °C supercritical water were characterized using mass measurement, X-ray diffraction, Raman spectroscopy, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. It was found that the mass gain of the alloy in supercritical water decreased with increasing exposure time. The oxide films have a double-layer structure, with an inner layer rich in Cr and outer layer rich in Ni and Fe after short time and long time exposure. The penetration of the oxide along the grain boundaries was observed, and the penetration depth increased with increasing exposure time. The grain boundaries and voids are the short-path of oxygen diffusion into the metal.
Other AbstractThe oxide films formed on Alloy 690 exposed to 600 ?C supercritical water were characterized using mass measurement, X-ray diffraction, Raman spectroscopy, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. It was found that the mass gain of the alloy in supercritical water decreased with increasing exposure time. The oxide films have a double-layer structure, with an inner layer rich in Cr and outer layer rich in Ni and Fe after short time and long time exposure. The penetration of the oxide along the grain boundaries was observed, and the penetration depth increased with increasing exposure time. The grain boundaries and voids are the short-path of oxygen diffusion into the metal.
KeywordNi-based alloy XPS Supercritical water High temperature corrosion High temperature oxidation Oxide film
Indexed ByCSCD
Language英语
CSCD IDCSCD:6216292
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149820
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhong Xiangyu,Wu Xinqiang,Han Enhou. Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water[J]. Journal of Materials Science & Technology,2018,34(3):561-569.
APA Zhong Xiangyu,Wu Xinqiang,&Han Enhou.(2018).Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water.Journal of Materials Science & Technology,34(3),561-569.
MLA Zhong Xiangyu,et al."Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water".Journal of Materials Science & Technology 34.3(2018):561-569.
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