Penetration of protective chromia scales by carbon

• DOI: 10.1016/j.scriptamat.2014.01.009
• Publication Date: 2014-01-15T16:45:27Z
• Authors: David J. Young; Thuan Dinh Nguyen; Peter Felfer; Jianqiang Zhang; Julie M. Cairney
• Keywords: anzsrc-for: 4016 Materials Engineering; anzsrc-for: 0912 Materials Engineering; 670; 02 engineering and technology; 4016 Materials Engineering; anzsrc-for: 40 Engineering; anzsrc-for: 0204 Condensed Matter Physics; anzsrc-for: 0913 Mechanical Engineering; anzsrc-for: 5104 Condensed matter physics; anzsrc-for: 4017 Mechanical engineering; 0210 nano-technology; 40 Engineering

Model Fe–20Cr (wt.%) alloy, exposed to Ar–20CO2 at 650 °C, formed a protective Cr2O3 scale, but nonetheless carburized. Atom probe analysis shows that carbon penetrates the scale via oxide grain boundaries.