Coupled Multi-Electrode Investigation of Crevice Corrosion of AISI 316 Stainless Steel | Zendy

F. Bocher | Zendy; Francisco PresuelMoreno | Zendy; N.D. Budinasky | Zendy; John R. Scully | Zendy

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Coupled Multi-Electrode Investigation of Crevice Corrosion of AISI 316 Stainless Steel

Author(s) -

F. Bocher,

Francisco PresuelMoreno,

N.D. Budinasky,

John R. Scully

Publication year - 2006

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/893879

Subject(s) - crevice corrosion , materials science , electrode , polarization (electrochemistry) , metallurgy , corrosion , limiting , limiting current , planar , current density , electrochemistry , chemistry , mechanical engineering , computer graphics (images) , physics , quantum mechanics , computer science , engineering

Close packed coupled multi-electrodes arrays (MEA) simulating a planar electrode were used to measure the current evolution as a function of position during initiation and propagation of crevice corrosion of AISI 316 stainless steel. Scaling laws derived from polarization data enabled the use of rescaled crevices providing spatial resolution. Crevice corrosion of AISI 316 stainless steel in 0.6 M NaCl at 50 C was found to initiate close to the crevice mouth and to spread inwards with time. The local crevice current density increased dramatically over a short period to reach a limiting value

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