Potential-dependence of the aqueous oxidation of alloy 22 in simulated concentrated well water

[摘要] Using x-ray photoemission spectroscopy (XPS), we have identified elemental oxidation state shifts in the passive films of coupons of Alloy 22 polarized anodically at various potentials below the passive-transpassive transition in 90C in a concentrated version of J-13 water. The data suggest a general trend toward higher oxidation states and a narrowing in the distribution of oxidation states of Ni, Cr, and Mo with increasing potential. The relative proportion of Mo in the passive film increases at the highest potentials tested.

[发布日期] 2000-11-01 [发布机构] Lawrence Livermore National Laboratory

[关键词] 25 Energy Storage;Oxidation;X-Ray Photoelectron Spectroscopy;Alloys;Valence