title: Corrosion behavior of metals and alloys in marine-industrial environment.
abstract: This work deals with atmospheric corrosion to assess the degrading effects of air pollutants on ferrous and non-ferrous metals and alloys, which are mostly used as engineering materials. An exposure study was conducted in the Tuticorin port area located on the east coast of South India, in the Gulf of Mannar with Sri Lanka to the southeast. Common engineering materials, namely mild steel, galvanized iron, Zn, Al, Cu and Cu-Zn alloys (Cu-27Zn, Cu-30Zn and Cu-37Zn), were used in the investigation. The site was chosen where the metals are exposed to marine and industrial atmospheres. Seasonal 1 to 12 month corrosion losses of these metals and alloys were determined by a weight loss method. The weight losses showed strong corrosion of mild steel, galvanized iron, Cu and Zn and minor effect on Al and Cu-Zn alloys. Linear regression analysis was conducted to study the mechanism of corrosion. The composition of corrosion products formed on the metal surfaces was identified by x-ray diffraction and Fourier transform infrared spectroscopy.
authors.affiliation: Corrosion Science and Engineering Division, Central Electrochemical Research Institute, Karaikudi-630006, TN, India and Department of Chemistry, Sri Paramakalyani College, Alwarkurichi-627 412, TN, India.
authors.forename: Mariappan
authors.initials: M
authors.lastname: Natesan
authors.affiliation: Corrosion Science and Engineering Division, Central Electrochemical Research Institute, Karaikudi-630006, TN, India and Department of Chemistry, Sri Paramakalyani College, Alwarkurichi-627 412, TN, India.
authors.forename: Subbiah
authors.initials: S
authors.lastname: Selvaraj
authors.affiliation: Corrosion Science and Engineering Division, Central Electrochemical Research Institute, Karaikudi-630006, TN, India and Department of Chemistry, Sri Paramakalyani College, Alwarkurichi-627 412, TN, India.
authors.forename: Tharmakkannu
authors.initials: T
authors.lastname: Manickam
authors.affiliation: Corrosion Science and Engineering Division, Central Electrochemical Research Institute, Karaikudi-630006, TN, India and Department of Chemistry, Sri Paramakalyani College, Alwarkurichi-627 412, TN, India.
authors.forename: Gopalachari
authors.initials: G
authors.lastname: Venkatachari
keywords: atmospheric corrosion; corrosion products analysis; ferrous; marine-industrial areas; nonferrous metals and alloys; regression analysis