The temperature-dependent pitting and repassivation behaviors of UNS S31803 duplex stainless steel in chloride solutions
Source abstract
Abstract
Abstract An improved electrochemical method named thermal pulse technique was designed to measure the current flowing from a potentiostatically maintained UNS S31803 electrode in 1 M NaCl solution, while various thermal pulses were applied on the solutions. Both the critical pitting temperature (CPT) and the repassivation temperature (Tr) were measured in one thermal pulse. The Tr data presented an inverted V-shape trend as the cooling rate decreased. Both the CPT and Tr values declined after multiple thermal pulses. The cyclic potentiodynamic polarization curves present a sharp transition of pitting and repassivation potential at the temperature ranged between the CPT and Tr.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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