Studies on the corrosion behavior of Fe-20Cr alloy in NaCl solution spray at 600 °C. (1st April 2018)

• Record Type: Journal Article
• Authors: Cao, Min; Liu, Li; Yu, Zhongfen; Fan, Lei; Ying, Li; Wang, Fuhui
• Is Part Of: Corrosion science. Volume 133(2018)
• Page Start: 165
• Page End: 177
• Publication Date: 2018-04-01
• Subjects: A. Alloy -- C. Atmospheric corrosion -- C. Chloride -- C. High temperature corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2018.01.033
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Environment is a NaCl solution spray at 600 °C that closes to real service. Corrosion behaviour of Fe-20Cr is significantly different from the old study. Corrosion of Fe-20Cr is enhanced by NaCl solution spray at 600 °C. Small amount of Cl in unit time can inhibit the formation of Cr2 O3 and accelerate corrosion. Abstract: The corrosion behavior of Fe-20Cr in NaCl solution spray at 600 °C, compared with that under solid NaCl deposit in water vapor, has been studied by mass-gain measurements, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, secondary ion mass spectrometry and transmission electron microscopy methods The results demonstrated that Fe-20Cr undergoes serious corrosion in NaCl solution spray. Significantly different corrosion products with outer Fe2 O3 and inner FeCr2 O4 layers were formed. Meanwhile, a small amount of Cl was found in the corrosion scale, which was thought to have an important effect on corrosion. The corrosion behavior of Fe-20Cr in NaCl solution spray at 600 °C has been discussed in detail.