CO and H2S chemistry on and in Fe and Fe alloys from first principles

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Corrosion and erosion of steel is a serious materials engineering problem affecting all sorts of industries. Experimentally characterizing or theoretically modeling the complex surface and bulk solid state chemistry involved is nontrivial. By necessity, one must resort to approximate quantum mechanics techniques; here we employ first-principles Kohn-Sham density functional theory to explore a subset of chemical reactions involved in steel degradation. We focus on known chemical contaminants, CO and H2S, which are thought to lead to carburization, sulfidation, and hydrogen embrittlement of steel. We first examine their adsorption and dissociation on iron surfaces (as a model for steel). We then evaluate the incorporation of carbon and hydrogen into iron. Then we consider whether any sort of pretreatment, such as alloying the surface and near surface layers of steel, might inhibit these damaging surface reactions and subsequent impurity diffusion. Lastly, we suggest a possible multilayer protective coating design for steel.

Original languageEnglish (US)
Title of host publication233rd ACS National Meeting, Abstracts of Scientific Papers
StatePublished - Dec 28 2007
Event233rd ACS National Meeting - Chicago, IL, United States
Duration: Mar 25 2007Mar 29 2007

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other233rd ACS National Meeting
CountryUnited States
CityChicago, IL
Period3/25/073/29/07

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Carter, E. A. (2007). CO and H2S chemistry on and in Fe and Fe alloys from first principles. In 233rd ACS National Meeting, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).