Kandemirli, Vedat Burak (2012) Investigation the effect of Papaver Rhoeas, Malva Grandfolia, and Carduus Marianus Leaves Extracts on Mild Steel in HCl solution, by using weight loss method and linear polarisation resistance technique. Other thesis, TED Ankara College Foundation High School.
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Abstract
We can say mild steel studied corrodes in hydrochloric acid solutions, and also mild steel corrodes when exposed to a solution of HCl and the rate of corrosion increases as the immersion time increases. Therefore, inhibition effect of Papaver rhoeas, Malva Grandfolia, and Carduus Marianus leaves extract as corrosion safe inhibitors on the mild steel corrosion in hydrochloric acid solution was studied using traditional weight loss method as well as linear polarisation resistance technique. Corrosion inhibition efficiency of Papaver rhoeas, Malva Grandfolia, and Carduus Marianus leaves extracts was evaluated using weight loss measurements for effect of various solution concentrations in 1.0M HCl solution. In addition, linear polarisation method estimating of corrosion rate instantaneously was performed to evaluate both various solution concentration and different HCl concentrations, and different immersion time. It was found that three selected extract of Papaver rhoeas, Malva Grandfolia, and Carduus Marianus leaves reduced the corrosion of mild steel with an efficiency of 96.4 %–97.4 % in 1 M HCl for 24 hours immersion time. The inhibition efficiency of Papaver rhoeas leaves is slightly more than those of Malva Grandfolia, and Carduus. The results of both methods showed that the corrosion rate of mild steel exposed to a solution of hydrochloric acid is decreasing and inhibition yield is growing with the concentration of Papaver rhoeas leaves extract, and the best i effect was obtained as Papaver rhoeas leaves volume reached 80 mL for 24 hours immersion time. I used two methods and one of them is weıght loss and the other is linear polarization and lınear polarization is better than weigtht loss because There are many advantages to linear polarization method. One of them is easy to determine corrosion rate, the other one is corrosion efficiency calculated quickly. To determine corrosion rate at least 24 hours are required for weight loss method. In weight loss method, coupons are used in corrosion measurement only one times. Inhibition efficiency studies of Papaver rhoeas, Malva Grandfolia, and Carduus Marianus leaves extract done with the linear polarization method showed that the inhibition efficiency values generally decreased as the concentration of HCl solution increased.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | Supervisor: Serenay Tarhan Güler, IB Notu: B |
| Uncontrolled Keywords: | corrosion |
| Subjects: | Q Science > QD Chemistry |
| Depositing User: | Kamil Çömlekçi |
| Date Deposited: | 09 Jul 2012 11:27 |
| Last Modified: | 12 Apr 2019 09:40 |
| URI: | http://tedprints.tedankara.k12.tr/id/eprint/227 |
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