Activation energies ratio as corrosion indicator for different heat treated stainless steels
Source abstract
Abstract
Abstract The influence of heat treatment on AISI 420 in 0.1 M H2SO4 was studied at passive potentials and increasing temperatures of acid, which lowers the passivity process and accelerates the dissolution of protective layers. Samples were compared with potentiodynamic measurements, EIS, SEM and EDS analysis. From Ea, Δ‡H∘ andΔ‡S∘, further corrosive behaviour can be predicted in terms of the activation energy needed for the initiation of a chemical process on a metal surface: whether either passivation or dissolution of protective layer is preferred. In respect of those values, the passivity efficiency factor ηpass was introduced and represents best corrosion behaviour as it exceeds value 1.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
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