Efficiency of Rust Inhibitors on Non-Galvanized Iron

The purpose of our experiment was to determine the efficiency of two types of rust inhibitors. The efficiency of these inhibitors was determined by the amount of ferrous oxide which formed on strips of non-galvanized iron. We began our experiment by randomizing 15 strips of non-galvanized iron into 3 groups: the control group, the Petroleum Jelly group, and the Rust-Oleum® Paint group. The control group was left untreated, while the two experimental groups were coated with their assigned inhibitor. Each strip was placed in an empty test tube, where the system was massed. After massing, the test tubes were filled with distilled water and left out to soak for five days allowing oxidation to occur. Subsequent to soaking, each dry system was re-massed, and the water was drained through filer paper to collect any rust which may have separated from the strip. We then calculated the change in mass due to rusting. To analyze our data we used an Analysis of Variance test (ANOVA). We found our hypothesis to be correct because the two rust inhibitor groups did not rust, while the control group gained an extensive amount of mass due to rusting. We can be 95% confident that our results were not due to chance.

Research Done By:

Christine Davidson

Jeffrey Woodbury