Effects of Oxygen, Temperature and Salinity on Carbon Steel Corrosion in Aqueous Solutions; Model Predictions versus Laboratory

Steven L. Grise & Brian J. Saldanha
E.I. du Pont de Nemours & Co,

The corrosion of Carbon Steel materials in brine solutions challenges industry to weigh the economics of lower cost materials of construction against the mechanical integrity and service life of equipment. This presentation will consider this challenge from a slightly different perspective, considering the effects of dissolved oxygen, temperature, salinity, and liquid velocity on corrosion of carbon steel. Model results will be compared with field observations and laboratory experiments. Conclusions from the study will indicate strategies for corrosion monitoring and mitigation.

Steve Grise, DuPont

Steven L. Grise received his M.S. in Chemical Engineering from Lehigh University in 1983 and his B.S. in Chemical Engineering from The University of Notre Dame in 1980. Steve’s thesis and focus in graduate school involved vapor-liquid equilibrium and chemical thermodynamics. Steve has been employed by E. I. du Pont de Nemours & Co., Inc., since 1982. Since 1985, he has worked in DuPont Engineering Research and Technology as a consultant to DuPont businesses in the field of aqueous electrolyte thermodynamics and simulation. Over the past 15 years, Steve has been actively working to couple the chemical engineering disciplines of thermodynamics and kinetics to the materials engineering disciplines of metallurgy and corrosion, emphasizing the importance of the process chemistry and its impact on corrosion. Steve is co-author (with Marshall Rafal, Noel Scrivner, and Jim Berthold) of Chapter 7, Models for Electrolyte Solutions, of the book Models for Thermodynamic and Phase Equilibria Calculations, edited by Stanley Sandler. Steve is a member of NACE.

Brian J. Saldanha, DuPont

Dr. Brian J. Saldanha is a Senior Consultant in DuPont’s Engineering Research and Technology Group. He specializes in Liquid Corrosion Technology in Materials Engineering, providing consulting in materials selection, specialized laboratory testing, and on-line corrosion monitoring assistance for the application of high-performance materials in complex corrosive systems. Brian has a B.S. in Metallurgical Engineering from the Indian Institute of Technology, Bombay, and a Ph.D. in Materials Science (Corrosion Technology) from the University of Delaware. Brian has been extremely active at NACE, chairing several symposia and has authored numerous conference and journal publications. He has led various NACE Technical and Section committees for the CPI, and is currently Chair of Operations at NACE.

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