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Selection of Material with High Salt Concentration in Preheating Section of Supercritical Water Oxidation System

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Abstract:

The corrosion behavior of Incoloy800, Incoloy825 and dual-phase steel2205 were studied on preheating section (275°C, 25MPa and [Cl1] 5500ppm) of supercritical water oxidation system. The results were investigated by means of scanning electron microscopy and energy dispersive spectroscopy. Incoloy800 presented pitting corrosion and corrosion on the surface of Incoloy825 and dual-phase steel2205 is not significant. Molybdenum can improve resistance to pitting corrosion and dual-phase steel shows a good corrosion resistance under the preheating section. Corrosion rates of Incoloy800, Incoloy825 and dual-phase steel2205 were 7.6mm/s, 2.6mm/s and 1.8mm/s, respectively, which were investigated by weight loss method.

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Periodical:

Advanced Materials Research (Volume 788)

Pages:

440-443

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.788.440

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Online since:

September 2013

Authors:

Xing Ying Tang, Shu Zong Wang, Li Li Qian, Jia Ming Lu

Keywords:

Alloying Element, Corrosion Rate, Dual Phase Steel, Preheating, Scwo

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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