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公开(公告)号：US20240076764A1
公开(公告)日：2024-03-07
申请号：US18506394
申请日：2023-11-10
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , YanFeng JIANG , Md MEHEDI , Yiming WU , Bin MA , Jinming LIU , Delin ZHANG
CPC classification number: C22C38/001 , C22C33/006 , H01F1/11 , H01F7/021 , H01F41/0253 , C22C2200/04 , C22C2202/02
Abstract: All example composition may include a plurality of grains including an iron nitride phase. The plurality of grains may have an average wain size between about 10 nm and about 200 nm. An example technique may include treating a composition including a plurality of grains including au iron-based phase to adjust an average grain size of the plurality of grains to between about 20 nm and about 100 ma. The example technique may include nitriding the plurality of grains to form or grow an iron nitride phase.
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公开(公告)号：US20210202142A1
公开(公告)日：2021-07-01
申请号：US17058882
申请日：2019-05-28
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , Jinming LIU , Bin MA , Fan ZHANG , Guannan GUO , Yiming WU , Xiaowei ZHANG
Abstract: In general, the disclosure is directed to bulk iron-nitride materials having a polycrystalline microstructure having pores including a plurality of crystallographic grains surrounded by grain boundaries, where at least one crystallographic grain includes an iron-nitride phase including any of a body centered cubic (bcc) structure, a body centered tetragonal (bct), and a martensite structure. The disclosure further describes techniques producing a bulk iron-nitride material having a polycrystalline microstructure, including: melting an iron source to obtain a molten iron source; fast belt casting the molten iron source to obtain a cast iron source; cooling and shaping the cast iron source to obtain a bulk iron-containing material having a body-centered cubic (bcc) structure; annealing the bulk iron-containing material at an austenite transformation temperature and subsequently cooling the bulk iron-containing material; and nitriding the bulk iron-containing material to obtain the bulk iron-nitride material.
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Patent Agency Ranking
公开(公告)号：US20240363269A1
公开(公告)日：2024-10-31
申请号：US18665020
申请日：2024-05-15
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , Jinming LIU , Bin MA , Fan ZHANG , Guannan GUO , Yiming WU , Xiaowei ZHANG
CPC classification number: H01F1/047 , C01B21/0622 , C23C8/02 , C23C8/26 , H01F41/0253 , C01P2002/60 , C01P2002/72 , C01P2002/77 , C01P2004/02 , C01P2004/03 , C01P2004/04 , C01P2006/42
Abstract: In general, the disclosure is directed to bulk iron-nitride materials having a polycrystalline microstructure having pores including a plurality of crystallographic grains surrounded by grain boundaries, where at least one crystallographic grain includes an iron-nitride phase including any of a body centered cubic (bcc) structure, a body centered tetragonal (bct), and a martensite structure. The disclosure further describes techniques producing a bulk iron-nitride material having a polycrystalline microstructure, including: melting an iron source to obtain a molten iron source; fast belt casting the molten iron source to obtain a cast iron source; cooling and shaping the cast iron source to obtain a bulk iron-containing material having a body-centered cubic (bcc) structure; annealing the bulk iron-containing material at an austenite transformation temperature and subsequently cooling the bulk iron-containing material; and nitriding the bulk iron-containing material to obtain the bulk iron-nitride material.
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公开(公告)号：US20200038951A1
公开(公告)日：2020-02-06
申请号：US16340031
申请日：2017-10-06
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , Bin MA , Jinming LIU , Yiming WU , YanFeng JIANG
Abstract: Example nanoparticles may include an iron-based core, and a shell. The shell may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example alloy compositions may include an iron-based grain, and a grain boundary. The grain boundary may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example techniques for forming iron-based core-shell nanoparticles may include depositing a shell on an iron-based core. The depositing may include immersing the iron-based core in a salt composition for a predetermined period of time. The depositing may include milling the iron-based core with a salt composition for a predetermined period of time. Example techniques for treating a composition comprising core-shell nanoparticles may include nitriding the composition.
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公开(公告)号：US20240055165A1
公开(公告)日：2024-02-15
申请号：US18494838
申请日：2023-10-26
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , Bin MA , Jinming LIU , Yiming WU , YanFeng JIANG
IPC: H01F1/06 , B22F9/04 , C23C8/26 , C23C8/50 , C23C8/80 , H01F1/055 , H01F1/059 , C22C38/00 , C22C38/10 , B22F1/16 , B22F1/054
CPC classification number: H01F1/065 , B22F9/04 , C23C8/26 , C23C8/50 , C23C8/80 , H01F1/0551 , H01F1/059 , C22C38/00 , C22C38/001 , C22C38/10 , B22F1/16 , B22F1/054 , H01F1/061 , B22F1/0553 , B22F2301/35 , B22F2302/20 , B22F2304/054 , H01F1/0552 , B22F1/0547
Abstract: Example nanoparticles may include an iron-based core, and a shell. The shell may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example alloy compositions may include an iron-based grain, and a grain boundary. The grain boundary may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example techniques for forming iron-based core-shell nanoparticles may include depositing a shell on an iron-based core. The depositing may include immersing the iron-based core in a salt composition for a predetermined period of time. The depositing may include milling the iron-based core with a salt composition for a predetermined period of time. Example techniques for treating a composition comprising core-shell nanoparticles may include nitriding the composition.
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公开(公告)号：US20220098711A1
公开(公告)日：2022-03-31
申请号：US16610285
申请日：2018-05-04
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , YanFeng JIANG , Md MEHEDI , Yiming WU , Bin MA , Jinming LIU , Delin ZHANG
Abstract: An example composition may include a plurality of grains including an iron nitride phase. The plurality of grains may have an average grain size between about 10 nm and about 200 nm. An example technique may include treating a composition including a plurality of grains including an iron-based phase to adjust an average grain size of the plurality of grains to between about 20 nm and about 100 nm. The example technique may include nitriding the plurality of grains to form or grow an iron nitride phase.
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公开(公告)号：US20220080500A1
公开(公告)日：2022-03-17
申请号：US17490800
申请日：2021-09-30
Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
Inventor： Jian-Ping WANG , Bin MA , Jinming LIU , Yiming WU , YanFeng JIANG
IPC: B22F1/02 , B22F1/00 , B22F9/04 , C23C8/26 , C23C8/50 , C23C8/80 , H01F1/055 , H01F1/059 , C22C38/00 , C22C38/10
Abstract: Example nanoparticles may include an iron-based core, and a shell. The shell may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example alloy compositions may include an iron-based grain, and a grain boundary. The grain boundary may include a non-magnetic, anti-ferromagnetic, or ferrimagnetic material. Example techniques for forming iron-based core-shell nanoparticles may include depositing a shell on an iron-based core. The depositing may include immersing the iron-based core in a salt composition for a predetermined period of time. The depositing may include milling the iron-based core with a salt composition for a predetermined period of time. Example techniques for treating a composition comprising core-shell nanoparticles may include nitriding the composition.
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