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International Journal of Chemical Engineering and Processing

Effect of Environmental Parameters on Metal Corrosion in Soil Using Finite Element Method

  1. Ekpri N. I.
  2. Ukpaka C. P.
  3. Amadi S. A.
  4. Puyate Y. T.

Abstract

Deterioration of buried metal due to corrosive soil environment is a major issue worldwide. Although failure of buried metal due to corrosive soil is an old problem, yet such failures are still uncontrollable even with the application of advanced corrosion protection technologies. Therefore, understanding environmental parameters causing corrosion of buried metals are necessary. This research work reviews environmental parameters causing corrosion of buried metal in soils. These functional parameters include: moisture content, temperature, pH, soil resistivity, conductivity and microbial activity. It was found that corrosion rate of metals increases with increase in moisture content and at high concentrated acidic in pH and variation in electrical conductivity influences various metal sample in terms of effect on metal corrosion. The effect of Clay soil, Sandy soil and Loamy soil characteristics in terms of physiochemical parameters was examine and determine as a contributing factors to metal corrosion on Carbon Steel, Mild Steel and Stainless Steel. It was observed that the rate of corrosion of carbon steel is high in loamy soil followed by clay soil and Sandy soil. Also, the rate of corrosion of Stainless Steel and Mild Steel was high in Clay soil followed by Loamy soil and Sandy soil. The order of variation of the corrosion rate on the various metals can be attributed to the physiochemical properties of the soil samples. In order to demonstrate the effect of environmental parameters on metal corrosion in soil, Galerkin’s principle of finite element method was used. Furthermore, simulations were carried out with the aid of MATLAB R2007b.to monitor and predict the rate of corrosion of metals buried in soil environment.Key words:Effect, environmental, parameters, metals, corrosion, soil, finite element method

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