Accelerated corrosion of low carbon steel by oscillatory acidic streams generated with a bio-inspired claw device.

ABSTRACT: A mechanical device inspired by the pistol shrimp snapper claw was developed. This technology features a claw characterized by a periodic opening/closing motion, at a controlled frequency, capable of producing oscillating flows at transitional Reynolds numbers. An innovative method was also proposed for determining the corrosion rate of carbon steel samples under oscillating acidic streams (aqueous solution of HCl). By employing very-thin carbon steel specimens (25 μm thickness), with one side coated with Zn and not exposed to the stream, it became possible to electrochemically sense the Zn surface once the steel sample was perforated, thus providing the average dissolution rate into the most relevant pit on the steel surface. Furthermore, a laser light positioned beneath the metallic samp

SUBMITTER: Godinez FA 

PROVIDER: S-EPMC10994280 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature