Theses and Dissertations

Issuing Body

Mississippi State University


Horstemeyer, Mark F.

Committee Member

Mlsna, Todd E.

Committee Member

Wipf, O. David

Date of Degree


Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science


College of Arts and Sciences


Department of Chemistry


An investigation into the general and pitting corrosion rates of rolled homogeneous armor (RHA) steel in immersion and saltog environments is presented. The mechanical properties of RHA steel have been studied, but the effects of corrosion on RHA have not been analyzed. An immersion environment of 3.5% NaCl was used to induce corrosion for the total testing period of 1500 hours for four immersion samples. A Qog cyclic corrosion tester was used to simulate a saltog/humidity/drying environment for four saltog samples. The different mechanisms of corrosion (general and pitting) and their associated rates were quantified through evolved hydrogen gas measurements, profilometry, Scanning Electron Microscopy (SEM) and Optical Microscopy (OM). The primary corrosion mechanism in the immersion samples was general corrosion, while the primary corrosion mechanism in the saltog samples was pitting corrosion. The immersion samples showed no signs of pitting corrosion.



pitting corrosion||general corrosion||steel||rolled homogeneous armor (RHA)