Abstract
The effect of Zn addition on the composition of oxide scales formed on 316L stainless steel has been studied in high-temperature and high pressured waters, which aim to simulate the primary loop water environment of pressurized water reactor (PWR). Then, the formed oxide scales on the steel are analyzed by X-ray photoelectron spectroscopy (XPS). The results show that after soaked in water with 10 μg/kg Zn addition at 320 °C for 1000 h, compact oxide scales formed on the steel, which consist mainly of (Zn, Fe, Ni)(Cr, Fe)2O4, with an inner portion rich in Cr. However, the Cr rich portion extends gradually outwards to lead the whole oxide scale to become the same with the increasing exposed time.
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