Abstract
Surface orientation plays an important role in oxidation behavior; studies of single crystals suggest that {111} surfaces are most resistant to oxidation. However, most materials are polycrystalline and contain numerous orientations which contribute to the oxidation process. Here we determine the effect of orientation on oxidation behavior of metals over all surface orientations. The microstructure is characterized with electron backscatter diffraction (EBSD). After high temperature oxidation, the oxide topography is characterized using optical profilometry (OP). By correlating results from EBSD and OP, the oxide height can be determined for each orientation. The data suggests that as the surface normal deviates from the <111> direction, the oxide thickness increases. The oxidation rate may depend on not only the surface orientation, but the character of the grain boundaries. This technique allows a thorough understanding of the role of surface orientation on oxidation and may provide insight to the production of oxidation-resistant surfaces.
Original language | American English |
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State | Published - 11 Mar 2008 |
Event | 2008 TMS Annual Meeting - Duration: 11 Mar 2008 → … |
Conference
Conference | 2008 TMS Annual Meeting |
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Period | 11/03/08 → … |
EGS Disciplines
- Materials Science and Engineering