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US 10,501,376 B2Granted
Functionally graded carbides
AssigneeUniversity of Utah Research Foundation
InventorsDinesh Shetty, Raymond Cutler, Michael M. Sygnatowicz
Life of this patent
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Abstract
A functionally graded carbide body (400) can include a group 5 metal carbide substrate having a bulk composition region (410) that contains at least 70 wt % of a rhombohedral ζ-phase carbide. A γ-phase-rich region (420) having a γ-phase-rich composition can be at a surface (430) of the substrate, and a phase composition gradient region (440) can transition from the γ-phase-rich composition region at the surface to the bulk composition region at a gradient depth (450) below the surface.
Claims16
A functionally graded carbide body of a group 5 metal carbide, comprising:
- a bulk composition region comprising at least 70 wt % of a rhombohedral ζ-phase carbide of the group 5 metal carbide;
- a γ-phase-rich region having a γ-phase-rich composition at a surface of the carbide body;
- and
- a phase composition gradient region transitioning from the γ-phase-rich composition region to the bulk composition region at a gradient depth below the surface.
1 more element
Dependencies are inferred from the claim text.