公开(公告)号：US10190197B2

公开(公告)日：2019-01-29

申请号：US15374322

申请日：2016-12-09

Applicant: The Trustees of Dartmouth College

Inventor： Ian Baker ,  Zhangwei Wang

IPC: C22C30/00 ,  C22C38/40 ,  C22C38/06 ,  C22C38/04 ,  H01F1/01

Abstract: Disclosed herein are new face-centered cubic (f.c.c.) high-entropy alloys with compositions (in atomic %) of FeaNibMncAldCreCf where a is between 37-43 atomic %, b is between 8-14 atomic %, c is between 32-38 atomic %, d is 4.5-10.5 atomic %, e is between 2.5-9 atomic % and f is between 0-2 atomic %. The undoped alloy has strength of 159 MPa and 40% elongation to failure, but the doped, carbon-containing alloy having 1.1 atomic percent carbon has yield strength of 360 MPa, an ultimate tensile strength (UTS) of 1200 MPa and 50% elongation to failure at room temperature. At 700° C., the yield strength is 214 MPa with 24% elongation to failure. Thus, the present alloy may replace austenitic stainless steels in applications where better strength is needed at both room temperature and elevated temperature in an oxidation resistant alloy.

公开(公告)号：US20170167003A1

公开(公告)日：2017-06-15

申请号：US15374322

申请日：2016-12-09

Applicant: The Trustees of Dartmouth College

Inventor： Ian Baker ,  Zhangwei Wang

IPC: C22C30/00 ,  C22C38/06 ,  C22C38/04 ,  C22C38/40

CPC classification number: C22C30/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/40 ,  H01F1/012

Abstract: Disclosed herein are new face-centered cubic (f.c.c.) high-entropy alloys with compositions (in atomic %) of FeaNibMncAldCreCf where a is between 37-43 atomic %, b is between 8-14 atomic %, c is between 32-38 atomic %, d is 4.5-10.5 atomic %, e is between 2.5-9 atomic % and f is between 0-2 atomic %. The undoped alloy has strength of 159 MPa and 40% elongation to failure, but the doped, carbon-containing alloy having 1.1 atomic percent carbon has yield strength of 360 MPa, an ultimate tensile strength (UTS) of 1200 MPa and 50% elongation to failure at room temperature. At 700° C., the yield strength is 214 MPa with 24% elongation to failure. Thus, the present alloy may replace austenitic stainless steels in applications where better strength is needed at both room temperature and elevated temperature in an oxidation resistant alloy.

公开(公告)号：US20250084511A1

公开(公告)日：2025-03-13

申请号：US18883022

申请日：2024-09-12

Applicant: The Trustees of Dartmouth College

Inventor： Thomas Keller ,  Dylan Barbagallo ,  Geoffroy Hautier ,  Ian Baker ,  Tushar Kanti Ghosh ,  Natalya Sheremetyeva

IPC: C22C22/00 ,  H01F1/047

Abstract: A Mn—Al—Ti permanent magnet includes a body composed of an alloy consisting essentially of manganese in an amount of 50 to 56 atomic percent, aluminum in an amount of 44 to 50 atomic percent, and titanium in an amount of 0.5 to 1.5 atomic percent with a total amount of manganese, aluminum, and titanium not exceeding 100 atomic percent. In one preferred embodiment, a composition for the Mn—Al—Ti permanent magnet is Mn54Al45Ti1 with substantially no other elemental additions being present. The addition of titanium in amounts of approximately 1 atomic percent to the Mn—Al system is believed to result in the titanium sitting on the anti-phase boundary (APB) sites with atoms coupling ferromagnetically across the APB in the presence of titanium, resulting in suppression of the negative effects of the APB and improving the remanence over a titanium-less Mn—Al permanent magnet. This system also exhibits sustained coercivity at high temperatures.

公开(公告)号：US11530468B2

公开(公告)日：2022-12-20

申请号：US17251769

申请日：2019-06-11

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Margaret Wu ,  Ian Baker

IPC: C22C30/00

Abstract: The disclosure provides high strength high-entropy alloys with compositions (in atomic %) of FeaNibMncAldCreCf where 37-43 atomic %, b is 8-14 atomic %, c is 27-33 atomic %, d is 4-10 atomic %, e is 10-14 atomic %, and f is 0-2 atomic %.

公开(公告)号：US20140286821A1

公开(公告)日：2014-09-25

申请号：US14222230

申请日：2014-03-21

Applicant: The Trustees of Dartmouth College

Inventor： Ian Baker ,  Fanling Meng ,  Jingwen Qiu

IPC: C22C30/00 ,  C22C22/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/06

CPC classification number: C22C30/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22F1/16

Abstract: Alloys including iron, nickel, manganese, aluminum and chromium are disclosed. The alloys have high strength and ductility. The alloys are prepared from readily available transition metals, and can be used in applications where properties similar to steel are necessary or advantageous.

Abstract translation: 公开了包括铁，镍，锰，铝和铬的合金。 该合金具有高强度和延展性。 合金由容易获得的过渡金属制备，并且可以用于需要或有利的与钢相似的性能的应用中。

公开(公告)号：US20150306246A1

公开(公告)日：2015-10-29

申请号：US14650239

申请日：2013-12-06

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Ian Baker ,  Katsiaryna Kekalo

IPC: A61K47/48

CPC classification number: A61K47/6923 ,  B82Y40/00 ,  C01G49/08 ,  C01P2002/01 ,  C01P2002/54 ,  C01P2002/60 ,  C01P2004/50 ,  C01P2004/64 ,  C01P2006/42 ,  C30B7/10 ,  C30B7/14 ,  C30B29/16 ,  C30B29/58 ,  C30B29/60 ,  H01F1/0054 ,  Y10S977/896

Abstract: Iron oxide nanoparticles and nanocomposites with organic molecules embedded in their structure, having exceptionally high SAR values, are provided for biological, medical (for example, drug delivery, hyperthermia, etc.) and other uses.

Abstract translation: 氧化铁纳米粒子和纳米复合材料与其结构中嵌入有机分子的纳米复合材料具有非常高的SAR值，用于生物，医学（例如药物递送，热疗等）和其他用途。