Date of Last Revision
2023-05-02 19:05:03
Major
Corrosion Engineering - Cooperative Education
Degree Name
Bachelor of Science
Date of Expected Graduation
Spring 2016
Abstract
The purpose of this research project was to evaluate galvanic damage on 1018 Carbon Steel coupled to Monel K-500 at varying rotation speeds on a rotating cylinder electrode in an aerated solution of ASTM artificial seawater. The work in this project is and attempt to study corrosion behavior for a Monel fastener coupled to a Carbon Steel plate. Polarization curves of each material at different rotation speeds were created to predict the corrosion behavior for a galvanic couple of Carbon Steel and Monel. The Potentiodynamic sweeps predict an increase in the corrosion current density for the galvanic couple when then rotation speed was increased from 0 to 1000 rpm attributable to an increased oxygen concentration at the surface and corresponding increase in cathodic reaction rate.
The general hypothesis was that corrosion behavior on the 8-day exposures would be governed by oxygen diffusion limiting effects. However, the 8-day exposures of the Monel-Carbon Steel couple did not show this clearly due to an increase in crevice corrosion at the Monel/steel interface. This discrepancy between the 8-day exposures of Monel-Carbon Steel galvanic couples and the predictions from the polarization curves suggest that oxygen diffusion effects may not be the controlling mechanism of corrosion behavior on the Monel-Carbon steel couple.
Research Sponsor
Robert S Lillard
First Reader
Rajeev K Gupta
Second Reader
Qixin Zhou
Recommended Citation
Nnyanzi, John K., "Galvanic Corrosion on Monel K-500 and 1018 Carbon Steel Couple" (2016). Williams Honors College, Honors Research Projects. 356.
https://ideaexchange.uakron.edu/honors_research_projects/356
Included in
Other Engineering Science and Materials Commons, Other Materials Science and Engineering Commons