Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7964376 | Journal of Nuclear Materials | 2016 | 6 Pages |
Abstract
Effects of trace PbO on oxide films of Incoloy 800HT were investigated in simulated primary circuit water chemistry of PWR, also with proper Co addition. The trace PbO addition in high temperature water blocked the protective spinel oxides formation of the oxide films of Incoloy 800HT. XPS results indicated that the lead, added as PbO into the high temperature water, shows not only +2 valance but also +4 and 0 valances in the oxide film of 800HT co-operated with Fe, Cr and Ni to form oxides films. Potentiodynamic polarization results indicated that as PbO concentration increased, the current densities of the less protective oxide films of Incoloy 800HT decreased in a buffer solution tested at room temperature. The capacitance results indicated that the donor densities of oxidation film of Incoloy 800HT decreased as trace PbO addition into the high temperature water.
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Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Yu Tan, Junhan Yang, Wanwan Wang, Rongxue Shi, Kexin Liang, Shenghan Zhang,