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Modelling the Effects of Porous Iron Sulfide Layers on Sour Corrosion Behaviour

Surface layers and deposits of iron sulfides formed from sour corrosion may exhibit both protective and corrosive properties depending on the types of iron sulfide formed and the physical structure of the layers. The protective barrier and blocking effects of the layers may be counteracted by significant cathodic activity on the surfaces of electrically conductive iron sulfides and galvanic corrosion of the underlying steel surface. Experimental and modelling work wereperformed to quantify the effects that parameters such as layer thickness and porosity H2S partial pressure temperature and pH can have on the electrochemical reactions aqueous equilibria and mass transport processes governing the corrosion rate. The results were discussed in the light of available literature and compared torelevant experimental sour corrosion data including both native corrosion product layers and applied iron sulfide deposits (UDC).

Product Number: 51319-13076-SG
Author: Jon Kvarekval
Publication Date: 2019
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11265 New Method For Assessing Corrosion Under Iron Sulfide Deposits and CO2/H2S Conditions

Product Number: 51300-11265-SG
ISBN: 2011 11265 CP
Author: C. M. Menendez, V. Jovancicevic, S. Ramachandran, M. Morton, D. Stegmann
Publication Date: 2011
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