Oxidation and Corrosion Mechanism of Steel Alloys and Inconel 600 Alloy in Liquid–Lead-Bismuth Eutectic | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 26, Issue 11, November 2008, Pages 1369-1383 PDF (411.15 K) | ||
| DOI: 10.30684/etj.26.11.6 | ||
| Author | ||
| Ahmed Moosa | ||
| Abstract | ||
| The alloys used in this study were two types pf stainless steels (304SS and 316 SS) , low alloy steel (Type T22-ASTM) and Inconel 600 alloy `(nickelbase superalloy). The oxidation mechanism were studied for three steel alloys and for inconel 600 in liquid Pb-Bi eutectic (LBE) in the temperature range 450- 550 oC using stagnant test . A model based on the experiments of Cr oxidation at high temperature with scale vaporization was applied to the present oxidation process by replacing the vaporization rate with the mass-transfer-corrosion rate. The results indicate that all steel alloys showed an oxidation/corrosion behavior. The oxidation kinetics is parabolic and the corrosion kinetics is linear. The parabolic oxidation rate constant are of the following order (Kp) 304SS (Kp) 316SS > (Kp) low alloy steel . The scale-removal-rate constants Kr by mass transfer corrosion are of the following order (Kr) inconel > (Kr) 316SS > (Kr) 304SS . The weight loss increases with increasing Ni content in the steel alloys. | ||
| Keywords | ||
| oxidation; corrosion; Liquid Metals | ||
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