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Patent Agency Ranking
公开(公告)号：US20230279525A9
公开(公告)日：2023-09-07
申请号：US17886949
申请日：2022-08-12
Inventor： John J. PITTARI, III , Steven M. Kilczewski , Jeffrey J. Swab , Kristopher A. Darling , Billy C. Hornbuckle , Heather A. Murdoch , Robert J. Dowding
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.
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公开(公告)号：US20180142331A1
公开(公告)日：2018-05-24
申请号：US15807604
申请日：2017-11-09
Inventor： John J. Pittari, III , Steven M. Kilczewski , Jeffrey J. Swab , Kristopher A. Darling , Billy C. Hornbuckle , Heather A. Murdoch , Robert J. Dowding
IPC: C22C29/02
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.
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公开(公告)号：US20230160042A1
公开(公告)日：2023-05-25
申请号：US17886949
申请日：2022-08-12
Inventor： John J. PITTARI, III , Steven M. Kilczewski , Jeffrey J. Swab , Kristopher A. Darling , Billy C. Hornbuckle , Heather A. Murdoch , Robert J. Dowding
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.
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公开(公告)号：US20200024702A1
公开(公告)日：2020-01-23
申请号：US16587724
申请日：2019-09-30
Inventor： John J. Pittari, III , Steven M. Kilczewski , Jeffrey J. Swab , Kristopher A. Darling , Billy C. Hornbuckle , Heather A. Murdoch , Robert J. Dowding
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.
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公开(公告)号：US11725262B2
公开(公告)日：2023-08-15
申请号：US17886949
申请日：2022-08-12
Inventor： John J. Pittari, III , Steven M. Kilczewski , Jeffrey J. Swab , Kristopher A. Darling , Billy C. Hornbuckle , Heather A. Murdoch , Robert J. Dowding
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.
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