Alloy 800H under supercritical water conditions: a flow reactor study of corrosion and hydrogen evolution. Issue 12 (26th June 2015)

• Record Type: Journal Article
• Authors: Choudhry, K. I.; Svishchev, I. M.; Orlovskaya, L.
• Is Part Of: Materials and corrosion. Volume 66:Issue 12(2015:Dec.)
• Page Start: 1430
• Page End: 1434
• Publication Date: 2015-06-26
• Subjects: Alloy 800H -- apparent corrosion rates -- high temperature corrosion -- hydrogen -- ICP‐OES; Materials -- Periodicals; Metals -- Periodicals; Corrosion and anti-corrosives -- Periodicals; 620.1122305
• DOI: 10.1002/maco.201508315
• Languages: English
• ISSNs: 0947-5117

Abstract

Abstract : Hydrogen evolution and corrosion rates for an Alloy 800H flow‐through reactor operating under supercritical water conditions were determined. Experiments were performed in the temperature range of 650 to 750 °C both with deoxygenated feed water, with an O2 concentration of less than 10 μg L −1 (ppb), and with a high oxygen concentration of around 20 mg L −1 (ppm). Effective rate constants for hydrogen evolution during the corrosion of an Alloy 800H were calculated to be 2.52×10 −11, 2.88×10 −11 and 4.30×10 −11 mol cm −2 s −1, for the reactor temperatures of 650, 700 and 750 °C, respectively.