Accession Number:

ADA522094

Title:

Probing Structure and Composition of Nickel/Titanium Carbide Hybrid Interfaces at the Atomic Scale (Preprint)

Descriptive Note:

Journal article

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH METALS, CERAMICS AND NONDESTRUCTIVE EVALUATION DIVISION

Personal Author(s):

• Tiley, J.
• Singh, A. R.
• Mahdak, K. C.
• Gopagoni, S.
• Hwang, J. Y.
• Nag, S.
• Banerjee, R.

Report Date:

2010-01-01

Pagination or Media Count:

11.0

Abstract:

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.

Descriptors:

• *CARBIDES
• *ATOMIC PROPERTIES
• *NICKEL
• *CARBON
• *COMPOSITE MATERIALS
• *TITANIUM COMPOUNDS
• STRUCTURES
• RESOLUTION
• TOMOGRAPHY
• PROBES

Subject Categories:

• Inorganic Chemistry
• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE