Atom probe study of chromium oxide spinels formed during intergranular corrosion

作者: Alexandre La Fontaine , Hung-Wei Yen , Peter J. Felfer , Simon P. Ringer , Julie M. Cairney

DOI: 10.1016/J.SCRIPTAMAT.2014.09.028

关键词: Materials scienceIntergranular corrosionAtom probeSpinelChromiteGrain boundaryAustenitic stainless steelCorrosionSilicateMetallurgy

摘要: Atom probe microscopy has been used to study the inhomogeneous nature of chromium oxide spinels in intergranular corrosion a 253 MA austenitic stainless steel after thermal cycling up 970 °C air. The results indicate that non-continuous character spinel layers originates from nanoscale phases such as iron-rich oxides along chromite grain boundaries and silicate particles. Their role rate is discussed.

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