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Erosive effect of reducing the sulfur bacteria Sundials of cooling systems, the General Company for Chemical Fertilizers South | ||
| Journal of Research Diyala humanity | ||
| Article 1, Volume 0, Issue 42, 2017, Pages 250-272 | ||
| Authors | ||
| adnan niee; abidelkareem flieh; hadeel tawfeeq; samy khallf; ; wijdan huseen | ||
| Abstract | ||
| The tendency of sulfate reducing bacteria to stimulated corrosion in mild steel in unified mixed cultures and pure cultures of species Desufotomaculum thermoacetoxidans was tested. The rate of corrosion was estimated during five intervals of time namely (28,42,56,70. and 84) days by using two methods . The weight loss and linear polarization also the number of pits and the depth of larger pit was measured using light microscope and the Pitting corrosion was detected by scanning electron microscope. Furthermore-Ray diffraction technique was employed to study the topography of corroded surfaces. The results showed an increase in the rates of corrosion of metal by increasing the time interval of exposure. The mix cultures exhibited higher corrosion rate (11.9071 and 13.1700 mpr) than pure cultures (10.53-71 and 10.5138 mpr) measured by weight loss and linear polarization respectively during (84| days . Also the number and depth of pitting corrosion on mild steel specimens in mixed cultures were (21 8 pits,53/mm)especially in comparison to the Pure culture (102. Pit,15mm) during (84) days. | ||
| Keywords | ||
| Ethan reducing traction capability of the sulfur and isolated from the cooling systems of the company | ||
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