Correlative atom-probe tomography and transmission electron microscope study of a chemical transition in a spinel on an oxidized nickel-based superalloy
作者： Sung-Il Baik , Xin Yin , David N. Seidman
DOI: 10.1016/J.SCRIPTAMAT.2013.02.025
关键词:
摘要: Complex thermally grown oxides (TGOs) are formed on a single-crystal Ni-based superalloy due to large fraction of alloying elements. Combining atom-probe tomography and transmission electron microscopy analyses, the three-dimensional elemental distributions metal spinel refractory metal-oxide regions presented. A spinel-type oxide, Ni(Cr,Al) 2 O 4 , is with crystallographic orientation relationship alloy substrate, which decomposes into other oxides. The sequence observed in TGO NiO → Cr 3 → Ta 5 → NiTaO NiTa 6 → Ni(Cr,Al) → Al .
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