Electrochemical characteristics of zirconium oxide treated Type 304 stainless steels of different surface oxide structures in high temperature water
By Yeh, Tsung-Kuang; Chien, Yuan-Chin; Wang, Bai-Young & Tsai, Chuen-Horng
Published in Corrosion Science
NULL
2008
Abstract
Electrochemical polarization analyses were conducted to investigate the impact of different oxide structures on corrosion resistance of ZrO2-treated Type 304 stainless steel specimens in high temperature water. All specimens were pre-oxidized in high temperature water containing either 300 ppb dissolved oxygen or 50 ppb dissolved hydrogen, followed by a hydrothermal deposition treatment with ZrO2 nanoparticles. Experimental results revealed that the corrosion potentials and corrosion current densities on the ZrO2-treated specimens were lower than those on the untreated ones, and the decreases in these parameters were more distinct on the ZrO2-treated specimens with oxides developed under dissolved oxygen condition.
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