HIGH TEMPERATURE CORROSION OF NF616 AND 12CrMoV IN SIMULATED WASTE-GASIFICATION ENVIROMENTS

J Chin Soc Corr Pro

2011, Vol. 31

Issue (6): 457-461 DOI:

Research Articles

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HIGH TEMPERATURE CORROSION OF NF616 AND 12CrMoV IN SIMULATED WASTE-GASIFICATION ENVIROMENTS

PAN Taijun¹, CHEN Degui¹, ZHANG Ke², HU Jing¹

1. Key Laboratory of Advanced Metallic Materials of Changzhou, School of Material Science and Engineering, Changzhou University, Changzhou 213164
2. Department of Chemistry, Shenyang Normal University, Shenyang, 110034

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Abstract The corrosion behavior of two commercial steels NF616 and 12CrMoV was comparatively investigated at 600℃ in H₂-CO₂, H₂-HCl-CO₂ and H₂-HCl-H₂S-CO₂ reducing atmospheres. In comparison with corrosion behavior of the same-type steels in H₂-CO₂ and H₂-HCl-CO₂ reducing atmosphere, NF616 and 12CrMoV suffered from accelerated corrosion in the H₂-HCl-H₂S-CO₂ atmosphere, particularly the degradation of chromia formed on 12CrMoV. The kind of accelerated corrosion was mainly attributed to formation of metal chlorides and sulfides during corrosion procedure. The mechanism on accelerated corrosion is illuminated on the basis of thermodynamic diagrams.

Key words: sulfur chlorine high temperature corrosion internal oxidation

Received: 30 August 2010

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PAN Taijun, CHEN Degui, ZHANG Ke, HU Jing. HIGH TEMPERATURE CORROSION OF NF616 AND 12CrMoV IN SIMULATED WASTE-GASIFICATION ENVIROMENTS. J Chin Soc Corr Pro, 2011, 31(6): 457-461.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2011/V31/I6/457

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