| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1498934 | Scripta Materialia | 2013 | 4 Pages |
Abstract
Complex thermally grown oxides (TGOs) are formed on a single-crystal Ni-based superalloy due to a large fraction of alloying elements. Combining atom-probe tomography and transmission electron microscopy analyses, the three-dimensional elemental distributions of metal oxides of the spinel and refractory metal-oxide regions are presented. A spinel-type oxide, Ni(Cr,Al)2O4, is formed with a crystallographic orientation relationship with the alloy substrate, which decomposes into other oxides. The sequence of oxides observed in the TGO are NiO → Cr2O3 → Ta2O5 → NiTaO4, NiTa2O6 → Ni(Cr,Al)2O4 → Al2O3.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Sung-Il Baik, Xin Yin, David N. Seidman,