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    ANTIMICROBIAL STEEL AND RELATED METHODS
    1.
    发明申请
    ANTIMICROBIAL STEEL AND RELATED METHODS 有权

    公开(公告)号：US20210324505A1

    公开(公告)日：2021-10-21

    申请号：US17231754

    申请日：2021-04-15

    申请人： Northwestern University

    发明人： Yip-Wah Chung ,  Qian Wang ,  Erica Marie Hartmann ,  Arman Mohammad Khan ,  Semyon Vaynman ,  Dieter Isheim

    IPC分类号： C22C38/16 ,  C22C38/04 ,  C22C38/08 ,  C22C38/06 ,  C22C38/02 ,  C22C38/12 ,  C22C38/14

    摘要： A method of reducing viability of a microbe is provided. An illustrative method comprises contacting a microbe with an antimicrobial surface comprising a copper-alloy steel comprising an iron matrix and copper nanoprecipitates distributed throughout the iron matrix, wherein the copper-alloy steel comprises: Cu in a range from 0.5 weight % to 5.0 weight %; C in a range from 0.03 weight % to 0.10 weight %; Mn in a range from 0.20 weight % to 5.0 weight %; Ni in a range from 0.0 weight % to 6.0 weight %; Al in a range from 0.0 weight % to 4.0 weight %; Nb in a range from 0.0 weight % to 0.10 weight %; Si in a range from 0.0 weight % to 2.0 weight %; Mo in a range from 0.0 weight % to 2.0 weight %; Ti in a range from 0.0 weight % to 2.0 weight %; V in a range from 0.0 weight % to 2.0 weight %; Cr in a range from 0.0 weight % to 8.0 weight %; and a balance of Fe. The antimicrobial surfaces are also provided.

    Lubricant compositions, and synthesizing methods and applications of same
    3.
    发明授权
    Lubricant compositions, and synthesizing methods and applications of same 有权

    公开(公告)号：US11639482B2

    公开(公告)日：2023-05-02

    申请号：US17228920

    申请日：2021-04-13

    申请人： NORTHWESTERN UNIVERSITY

    发明人： Yip-Wah Chung ,  Qian Jane Wang ,  Qiang Ma ,  Arman Mohammad Khan

    IPC分类号： C10M177/00 ,  C10M129/34 ,  C10M129/32 ,  C10N70/00

    摘要： A lubricant composition includes a base lubricant and a plurality of lubricant additive molecules functioning as precursor molecules to induce tribopolymerization and forming in situ protective tribofilm with desirable robustness and low shear resistance. Each lubricant additive molecule includes one or more surface-active groups attractable to target surface, and a carbon containing component operable connected to the one or more surface active groups. The carbon containing component comprise a carbon ring structure having a high ring strain that is metastable and activatable with a ring-opening reaction. A less stable carbon ring structure is more readily activated to the intermediate state, preferable to form more active fragments. Increasing the adsorption strength further is beneficial to prolonging the residence time of additive molecules on the target surface, thereby facilitating the dissociation of molecules and subsequent polymerization.

    Lubricant additives, lubricant compositions, and applications of same
    4.
    发明授权
    Lubricant additives, lubricant compositions, and applications of same 有权

    公开(公告)号：US10745637B2

    公开(公告)日：2020-08-18

    申请号：US16521631

    申请日：2019-07-25

    申请人： NORTHWESTERN UNIVERSITY

    发明人： Yip-Wah Chung ,  Qian Wang ,  Blake A. Johnson

    IPC分类号： C10M129/32 ,  C10M139/04 ,  C10M129/06 ,  C10M133/06 ,  C10M129/28 ,  C10N30/06 ,  C10N50/00 ,  C10N80/00

    摘要： A lubricant composition includes a base lubricant and a plurality of lubricant additive molecules. Each molecule includes a surface active group attractable to a target surface, wherein the surface active group comprises a carboxyl group, a siloxyl group, an amine group, or a mixture thereof, and a carbon containing component connected to the surface active group, wherein the carbon containing component comprises a carbon ring, wherein the surface active group and the carbon containing component are adapted such that the carbon film is formed in situ on the target surface of the target machine only when tribological energy activates the lubricant additive to unravel the carbon containing component under a pressure and a temperature during operation.

    ALLOYS AND METHODS OF FORMING SAME
    9.
    发明申请
    ALLOYS AND METHODS OF FORMING SAME 审中-公开
    合金及其形成方法

    公开(公告)号：US20150167128A1

    公开(公告)日：2015-06-18

    申请号：US14571844

    申请日：2014-12-16

    申请人： NORTHWESTERN UNIVERSITY

    发明人： Morris E. Fine ,  Semyon Vaynman ,  Evan T. Hunt ,  Akio Urakami ,  Yip-Wah Chung ,  Johannes Weertman

    IPC分类号： C22C23/04 ,  C22F1/06 ,  C22C23/00 ,  C22F1/00

    CPC分类号： C22C23/04 ,  C22C23/00 ,  C22F1/002 ,  C22F1/06

    摘要： In one aspect of the invention, an alloy includes a first element comprising magnesium (Mg), titanium (Ti), zirconium (Zr), chromium (Cr), or nickelaluminum (NiAl), a second element comprising lithium (Li), calcium (Ca), manganese (Mn), aluminum (Al), or a combination thereof, and a third element comprising zinc (Zn). According to the invention, nanoscale precipitates is produced in the magnesium alloy by additions of zinc and specific heat-treatment. These precipitates lower the energy for dislocation movements and increase the number of available slip systems in the magnesium alloy at room temperature and hence improve ductility and formability of the magnesium alloy.

    摘要翻译： 在本发明的一个方面，合金包括包含镁（Mg），钛（Ti），锆（Zr），铬（Cr）或镍铝（NiAl）的第一元素，第二元素包括锂（Li），钙 （Ca），锰（Mn），铝（Al）或其组合，以及包含锌（Zn）的第三元素。 根据本发明，通过添加锌和特定热处理在镁合金中产生纳米级沉淀物。 这些沉淀物降低了位错运动的能量，并且在室温下增加了镁合金中可用的滑移系统的数量，从而提高了镁合金的延展性和成形性。