Kinetic and thermodynamic analysis of high-temperature CO 2 corrosion of carbon steel in simulated geothermal NaCl fluids
作者: N. MundhenkS. CarreroK.G. KnaussR. WonnebergerA. UndiszY. Wu
作者单位: 1Earth & Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, United States
2University of California, Berkeley, CA, 94720, United States
3Otto Schott Institute of Materials Research, Chair of Metallic Materials, Friedrich-Schiller-University, 07743, Jena, Germany
刊名: Corrosion Science, 2020, Vol.171
来源数据库: Elsevier Journal
DOI: 10.1016/j.corsci.2020.108597
关键词: CO 2 corrosionCarbon steelThermodynamicsKineticsTEM
原始语种摘要: Abstract(#br)We discuss kinetic and thermodynamic aspects of carbon steel corrosion in CO 2 -containing NaCl fluids up to 240 °C. Crystalline nm-thick Fe-oxide films only form at 160 °C and 240 °C providing instantaneous and moderate corrosion protection. The absence of Fe-oxide at 80 °C results in high initial corrosion rates until a moderately protective, but thick and porous, FeCO 3 film forms. From the metal/film interface it grows inwards by replacing ferrite with FeCO 3 . TEM reveals a precursory, likely hydrated and chloride-containing, phase that predates FeCO 3 formation. Thermodynamic predictions agree well with experimental results in that Fe-oxide formation is favored over FeCO 3 towards higher temperatures.
全文获取路径: Elsevier  (合作)
影响因子:3.615 (2012)

  • corrosion 腐蚀
  • steel 
  • temperature 温度
  • carbon 
  • containing 包含的
  • replacing 替换
  • thick 厚的
  • hydrated 水合的
  • thermodynamic 热力学的
  • geothermal 地热的