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Modeling and Simulation of Damage Evolution in Crevice Corrosion

Brackman, Matthew D.

Abstract Details

2012, Master of Science, University of Akron, Applied Mathematics.
While much progress has been made in transport models of crevice corrosion, damage evolution of the metal surface during this process has received less attention. This work focuses on mathematical modeling and simulation of the damage evolution to provide quantitative descriptions of the time varying shape of the corroded surface. The base model uses the potentiodynamic polarization data for nickel (Ni) in sulfuric acid and assumes well-mixed solution chemistry inside and outside the crevice, consistent with a pure potential drop model and experimental/modeling work in the literature. Asymptotic analysis is used to simplify the governing equations and develop an evolution equation for the Ni surface. Metal surface shapes, potential profiles and other characteristic features of the corrosion are predicted. Predicted results agree well with the published laboratory investigations. Since the model calculates the true crevice gap in real time, it provides new insights into the movement of the peak current density, potential drop down the crevice length and the critical length to gap ratio necessary to propogate potential drop controlled crevice corrosion.
Gerald Young, Dr. (Advisor)
Kevin Kreider, Dr. (Advisor)
Curtis Clemons, Dr. (Other)

Recommended Citations

Citations

  • Brackman, M. D. (2012). Modeling and Simulation of Damage Evolution in Crevice Corrosion [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1342711463

    APA Style (7th edition)

  • Brackman, Matthew. Modeling and Simulation of Damage Evolution in Crevice Corrosion. 2012. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1342711463.

    MLA Style (8th edition)

  • Brackman, Matthew. "Modeling and Simulation of Damage Evolution in Crevice Corrosion." Master's thesis, University of Akron, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1342711463

    Chicago Manual of Style (17th edition)