Invention Grant
- Patent Title: Cemented carbide containing tungsten carbide and finegrained iron alloy binder
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Application No.: US15807604Application Date: 2017-11-09
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Publication No.: US11434549B2Publication Date: 2022-09-06
- Inventor: John J. Pittari, III , Steven M. Kilczewski , Jeffrey J. Swab , Kristopher A. Darling , Billy C. Hornbuckle , Heather A. Murdoch , Robert J. Dowding
- Applicant: U.S. Army Research Laboratory
- Applicant Address: US MD Adelphi
- Assignee: U.S. Army Research Laboratory
- Current Assignee: U.S. Army Research Laboratory
- Current Assignee Address: US MD Adelphi
- Agent Christos S. Kyriakou
- Main IPC: C22C29/02
- IPC: C22C29/02 ; B22F3/105 ; C22C29/08 ; B22F3/14 ; C22C29/06 ; C22C1/05

Abstract:
A sintered cemented carbide body including tungsten carbide, and a substantially cobalt-free binder including an iron-based alloy sintered with the tungsten carbide. The iron-based alloy is approximately 2-25% of the overall weight percentage of the sintered tungsten carbide and iron-based alloy. The tungsten carbide may be approximately 90 wt % and the iron-based alloy may be approximately 10 wt % of the overall weight percentage of the sintered tungsten carbide and iron-based alloy. The tungsten carbide may comprise a substantially same size before and after undergoing sintering. The iron-based alloy may be sintered with the tungsten carbide using a uniaxial hot pressing process, a spark plasma sintering process, or a pressureless sintering process. The sintered tungsten carbide and iron-based alloy has a hardness value of at least 15 GPa and a fracture toughness value of at least 11 MPa√m.
Public/Granted literature
- US20180142331A1 CEMENTED CARBIDE CONTAINING TUNGSTEN CARBIDE AND FINEGRAINED IRON ALLOY BINDER Public/Granted day:2018-05-24
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