FACILE METHOD FOR THE LARGE AREA SYNTHESIS OF GEOMETRICALLY TWO DIMENSIONAL METALS AND CERAMICS

    公开(公告)号:US20200370160A1

    公开(公告)日:2020-11-26

    申请号:US16420020

    申请日:2019-05-22

    摘要: A new technique, referred to as PSBEE, is disclosed and enables fabrication of freestanding nanomembranes. The PSBEE technique enables fabrication and synthesis of nanomembranes comprising 2D high entropy alloys and 2D metallic glasses and may be extended to ceramics and semiconductors, thereby enabling the fabrication of large-scale freestanding nanomembranes across a wide range of materials, including those deemed to have a great potential for future functional and structural use. To form nanomembranes using PSBEE, a plurality of membranes may be prepared and subjected to thermoplastic compression. Afterwards, one of the membranes may be removed and the remaining membranes may undergo additional thermoplastic compression in the presence of a Si substrate. Once a threshold level of smoothness is achieved, a coating or film may be applied and then separated from the final plate.

    High entropy alloy structure and a method of preparing the same

    公开(公告)号:US11359266B2

    公开(公告)日:2022-06-14

    申请号:US16196224

    申请日:2018-11-20

    IPC分类号: C22C30/00 C22F1/16 C22C1/02

    摘要: A method for preparing a high entropy alloy (HEA) structure includes the steps of: preparing an alloy by arc melting raw materials comprising five or more elements; drop casting the melted alloy into a cooled mold to form a bulk alloy with eutectic microstructure therein; and subjecting the bulk alloy to an acidic condition to form a bulk porous structure with eutectic microstructure therein. A high entropy alloy structure is also provided as prepared by the method.

    Facile method for the large area synthesis of geometrically two dimensional metals and ceramics

    公开(公告)号:US11168390B2

    公开(公告)日:2021-11-09

    申请号:US16420020

    申请日:2019-05-22

    摘要: A new technique, referred to as PSBEE, is disclosed and enables fabrication of freestanding nanomembranes. The PSBEE technique enables fabrication and synthesis of nanomembranes comprising 2D high entropy alloys and 2D metallic glasses and may be extended to ceramics and semiconductors, thereby enabling the fabrication of large-scale freestanding nanomembranes across a wide range of materials, including those deemed to have a great potential for future functional and structural use. To form nanomembranes using PSBEE, a plurality of membranes may be prepared and subjected to thermoplastic compression. Afterwards, one of the membranes may be removed and the remaining membranes may undergo additional thermoplastic compression in the presence of a Si substrate. Once a threshold level of smoothness is achieved, a coating or film may be applied and then separated from the final plate.

    HIGH ENTROPY ALLOY STRUCTURE AND A METHOD OF PREPATING THE SAME

    公开(公告)号:US20200157663A1

    公开(公告)日:2020-05-21

    申请号:US16196224

    申请日:2018-11-20

    IPC分类号: C22C30/00 C22C1/02 C22F1/16

    摘要: A method for preparing a high entropy alloy (HEA) structure includes the steps of: preparing an alloy by arc melting raw materials comprising five or more elements; drop casting the melted alloy into a cooled mold to form a bulk alloy with eutectic microstructure therein; and subjecting the bulk alloy to an acidic condition to form a bulk porous structure with eutectic microstructure therein. A high entropy alloy structure is also provided as prepared by the method.

    HIGH ENTROPY ALLOY STRUCTURE AND A METHOD OF PREPARING THE SAME

    公开(公告)号:US20220056567A1

    公开(公告)日:2022-02-24

    申请号:US17516814

    申请日:2021-11-02

    摘要: A method for preparing a high entropy alloy (HEA) structure includes the steps of: preparing an alloy by arc melting raw materials comprising five or more elements; drop casting the melted alloy into a cooled mold to form a bulk alloy; applying an external force against the bulk alloy to reshape the bulk alloy; and heat-treating the reshaped bulk alloy, wherein the bulk alloy is reshaped and/or heat-treated for manipulating the distribution of the microstructure therein. The present invention also relates to a high entropy alloy structure prepared by the method.