Study the corrosion effect of some fungal species from Shatt al-Arab water against mild steel and brass metals in vitro

Abstract EN

his study included isolating some species of fimgi from samples of Shatt Al-Arab water and choiced five * 'la,' ^species to study their ability for the corrosion of Mild steel and Brass metals.

Identified These species as Aseprgillusflavus, Candida albicans,c Cryptococcus neoformans Geotrichum candidum, Penicillium sp.Which it caused corrosion on the metals in a semi continuous batch culture during three time intervals (28,56,84)days.

' The results show the species Aseprgillns flavus exhibited corrosion net values after 84 days 4.5071 mg/cm2/day on mild steel.While the corrosion net values on Brass was less compared with mild steel, also the corrosion net values for five isolates on Brass was various during three time intervals , the higher corrosion net values after 84days for yeast Cryptococcus neoformans gave higher values 6.8373.

mg/cm2/day Further more , X-Ray Diffraction technique was employed to study the topography of the corroded surfaces for mild steel and Brass and the results showed deformity in crystal plane of two metals