Probing Structure and Composition of Nickel/Titanium Carbide Hybrid Interfaces at the Atomic Scale (Preprint)
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH METALS, CERAMICS AND NONDESTRUCTIVE EVALUATION DIVISION
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The transition in structure and composition across the titanium carbidenickel hybrid interface has been determined at near atomic resolution by coupling high-resolution transmission electron microscopy with three-dimensional atom probe tomography. The titanium carbide phase adopts a rocksalt-type structure, is highly non-stoichiometric with a composition of TiNi2C, exhibits an orientation relationship with the nickel matrix with a structurally well-defined semi-coherent interface, and a compositionally distinct interfacial layer 2 nm, that is marginally enriched in titanium and nickel and depleted in carbon.
- Inorganic Chemistry
- Metallurgy and Metallography