Abstract
A Nicrofer 6025 HT alloy 602 tube in a furnace, used for the recovery of steel pickling liquors, failed during operation at 1100°C. Metallographic investigations—microstructural and energy dispersive X-ray spectrometry (EDS)—of the failed tube showed evidence of corrosion and the presence of chlorine and sulfur in the corrosion products. The failure of the furnace tube was due to the presence of sulfur dioxide in combination with chlorine.
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References
Nicrofer 6025 HT alloy 602 CA, No. 4037. December 1996 edition, Werdohl, Germany: Krupp VDM GmbH; 1996
VDM Report No. 25:High Temperature Alloys from Krupp VDM for Industrial Engineering, Werdohl, Germany: Krupp VDM GmbH; 1996
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Chang, J., McMannis, C., Sandall, B. et al. Metallurgical analysis of a corrosion failure. Practical Failure Analysis 1, 20–21 (2001). https://doi.org/10.1007/BF02715372
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DOI: https://doi.org/10.1007/BF02715372