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Electrochemical characteristics of zirconium oxide treated Type 304 stainless steels of different surface oxide structures in high temperature water |
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| Authors: | Tsung-Kuang Yeh Yuan-Chin Chien Chuen-Horng Tsai |
| Affiliation: | a Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan b Nuclear Science and Technology Development Center, National Tsing Hua University, 205 Nuclear Reactor Division, 101, Section 2, Kuang-Fu Road, Hsinchu 300, Taiwan c Institute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu, Taiwan |
| 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. |
| Keywords: | A Stainless steel B Polarization C Intergranular corrosion C Stress corrosion C Oxygen reduction |
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