Corrosion of Fe-Cr and Fe-Cr-Ni Alloys at 700-800°C in CO2-0.3SO2-6O2 Mixed Gas

Min Jung Kim; Dong Bok Lee; Xiao  Xiao; Kyong Hwan Lee

doi:10.4028/www.scientific.net/KEM.833.85

Paper Titles

The Effect of Stand - Off Distance on the Mechanical Properties of TIG Butt Joints of 316 Stainless Steel
p.59

Development of Superhydrophobic Coatings on AA 7075 by Surface Modification Using Fatty Acids
p.69

Effects of Cu Addition on Age Hardening Response of Al-7Si-4Mg Alloys at 130 °C
p.74

Microstructure, Hardness, and Surface Cracks Evaluation of HVOF-Sprayed Stellite-1 Coating Applied on Steam Turbine Blade
p.80

Corrosion of Fe-Cr and Fe-Cr-Ni Alloys at 700-800°C in CO₂-0.3SO₂-6O₂ Mixed Gas
p.85

Prediction of the Effective Stress-Strain Curves of Ductile Polymer 1D-Reinforced Composites Filled with Hollow Fibers Using Parameterized Model Based on Bezier Curves
p.93

Surface Finite Element for Imperfect Interface Modeling in Elastic Properties Homogenization
p.101

Physical Characterization of Latex from Artocarpus heterophyllus Lam. (Jackfruit) and Four Related Artocarpus spp.
p.107

Mechanical, Physical, and Wear Properties of 3D Printed Polyactic Acid Materials
p.118

HomeKey Engineering MaterialsKey Engineering Materials Vol. 833Corrosion of Fe-Cr and Fe-Cr-Ni Alloys at...

Corrosion of Fe-Cr and Fe-Cr-Ni Alloys at 700-800°C in CO₂-0.3SO₂-6O₂ Mixed Gas

Abstract:

ASTM T22 (Fe-2.25Cr-1Mo), 347HFG (Fe-18Cr-11Ni), and 310H (Fe-25Cr-19Ni) steels were reacted with CO₂-0.3SO₂-6O₂ mixed gas. During corrosion at 700-800 °C for 20-100 h, 347HFG (Fe-18Cr-11Ni), and 310H (Fe-25Cr-19Ni) steels had good protective Cr₂O₃ oxide scale. Corrosion rates increased progressively as the corrosion temperature and time increased. Corrosion resistance increased in the order of T22, 347HFG, and 310H, suggesting that the alloying elements of Cr and Ni beneficially improved the corrosion resistance of steels. Basically, Fe oxidized to Fe₂O₃, and Cr oxidized to Cr₂O₃, some of which further reacted with FeO to form FeCr₂O₄.