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Meeting MS&T22: Materials Science & Technology
Symposium Resisting Degradation from the Environment: A Symposium Honoring Carolyn M. Hansson’s Research and Pioneering Experiences as a Woman in STEM
Presentation Title Galvanic Corrosion of Active and Passive Steel Bars with Different Area Ratios
Author(s) Amir Poursaee, Zheng Dong
On-Site Speaker (Planned) Amir Poursaee
Abstract Scope The present study investigated the corrosion behavior of coupled active and passive steel bars in a concrete simulated environment. Three different active-to-passive areas (A/P) ratios, i.e., A/P=1/1, 1/3, 1/20, were studied. Three cells were prepared for each group of A/P ratio: an individual cell with active steel specimens, individual cell with passive steel specimens, and a coupled cell that connected active and passive steel bars. All specimens were immersed in a concrete pore solution for 14 days; then, 3 wt.% NaCl was added to the cells. Results of the electrochemical tests indicated that coupling changed the corrosion behavior of the active steel. In the case of A/P=1/1, the corrosion was mainly in the form of localized corrosion, whereas in the case of A/P=1/20, more general and severe corrosion was observed. In addition, the coupling increased the anodic and cathodic Tafel slopes, which are closely related to the iron oxidation rate.


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Correlating Crack Tip pH to Environment Assisted Cracking Performance in Al Alloys
Corrosion and Biocompatibility of 316L Stainless Steels Fabricated by Selective Laser Melting
Corrosion and Environmentally Assisted Cracking (EAC) Evaluation of Additively Manufactured (AM) High Strength Precipitation Hardened Steel (UNS S17400)
Corrosion of Fe-Cr-Mn Stainless Steel in Supercritical Water
Evaluating the Sensitivities of SCC Susceptibility in Stainless-steel Nuclear Waste Storage Containers
Galvanic Corrosion of Active and Passive Steel Bars with Different Area Ratios
Investigation of Crack Initiation in Hydrogen Embrittled Ni-base Alloy 725
Liquid Metal Embrittlement: Cracking Open the Disparate Mechanisms
Oxidation Behavior of Model FeCrAl Steel and APMT Alloy After Exposure in Steam
Quantifying the Environmentally Assisted Cracking Initiation and Short Crack Behavior in New Generation 7xxx Aluminium
Relating Microstructure to Environmental Degradation in Al-Mg Alloys
The Effect of Microstructural Surface States on the Corrosion of Additively Manufactured 316 Stainless Steel

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