Microbiological influenced corrosion attack by Bacillus Megaterium bacteria on Al–Cu alloy. (September 2014)

• Record Type: Journal Article
• Authors: Deen, K. M.; Yousaf, M.; Afzal, N.; Riaz, S.; Naseem, S.; Farooq, A.; Ghauri, I. M.
• Is Part Of: Materials technology. Volume 29:Number 5(2014)
• Page Start: 269
• Page End: 274
• Publication Date: 2014-09
• Subjects: Aluminium, -- Bacteria, -- Corrosion, -- Electrochemical, -- Pitting; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1179/1753555714Y.0000000150
• Languages: English
• ISSNs: 1066-7857

Abstract

Abstract : In this study the microbial attack of Bacillus megaterium bacteria on mechanical properties of Al–Cu alloy has been investigated. The microstructural features and electrochemical behaviour of alloy samples immersed in controlled and inoculated medium under aerobic conditions were examined through scanning electron microscope and electrochemical impedance spectroscopy respectively. The scattering of phase angle at low frequency and lower pitting resistance after initial 7 days than 14 days with increase in pitting capacitance was attributed to sever deterioration of specimen surface by synergistic action of chloride and bacteria. The considerable damage to the tensile strength and hardness by microbiological influenced corrosion was in support to the electrochemical results.