公开(公告)号：US20210388469A1

公开(公告)日：2021-12-16

申请号：US17287776

申请日：2019-10-24

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun Li ,  Maximilian Sokoluk

IPC: C22C21/10 ,  C22F1/053 ,  B23K35/28 ,  B23K31/02

Abstract: A metal matrix nanocomposite includes: (1) a matrix including an aluminum alloy; and (2) nanostmctures dispersed in the matrix, wherein the matrix includes grains having aspect ratios of about 3 or less. Manufacturing processes include subjecting the nanocomposite to solidification processing, fusion welding, extrusion, thixocasting, additive manufacturing, and heat treatment.

公开(公告)号：US20190111478A1

公开(公告)日：2019-04-18

申请号：US16090130

申请日：2017-03-30

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun Li ,  Jiaquan Xu

IPC: B22F1/00 ,  C22C32/00 ,  C22C1/10 ,  C22C21/06

Abstract: A metal matrix nanocomposite includes: 1) a matrix including one or more metals; and 2) nanostructures uniformly dispersed and stabilized in the matrix at a volume fraction, including those greater than about 3% of the nanocomposite.

公开(公告)号：US20220018001A1

公开(公告)日：2022-01-20

申请号：US17294266

申请日：2019-11-14

Applicant: The Regents of the University of California

Inventor： Xiaochun Li ,  Chezheng Cao ,  Gongcheng Yao ,  Shuaihang PAN

IPC: C22C32/00 ,  C22C1/10 ,  C22C1/05

Abstract: A copper-based nanocomposite includes a matrix including copper, and nanostructures dispersed in the matrix, wherein the nanocomposite has a yield strength of about 300 MPa or greater, and a ductility of about 5% or greater. Manufacturing methods of a copper-based nanocomposite are also provided.

公开(公告)号：US11040395B2

公开(公告)日：2021-06-22

申请号：US16090130

申请日：2017-03-30

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun Li ,  Jiaquan Xu

IPC: B22F1/00 ,  C22C1/10 ,  C22C32/00 ,  C22C33/02 ,  C22C21/06 ,  C22C49/14 ,  C22C47/08

Abstract: A metal matrix nanocomposite includes: 1) a matrix including one or more metals; and 2) nanostructures uniformly dispersed and stabilized in the matrix at a volume fraction, including those greater than about 3% of the nanocomposite.

公开(公告)号：US10513759B2

公开(公告)日：2019-12-24

申请号：US15410690

申请日：2017-01-19

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun Li ,  Lianyi Chen

IPC: C22C23/04 ,  C22C1/10

Abstract: A manufacturing method includes: 1) forming a melt including one or more metals; 2) introducing nanostructures into the melt at an initial volume fraction of the nanostructures; and 3) at least partially evaporating one or more metals from the melt so as to form a metal matrix nanocomposite including the nanostructures dispersed therein at a higher volume fraction than the initial volume fraction.

公开(公告)号：US20180010266A1

公开(公告)日：2018-01-11

申请号：US15546270

申请日：2016-01-21

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun Li ,  Jingzhou Zhao ,  Injoo Hwang

IPC: D02G3/36 ,  D06M11/83 ,  D06M11/42

CPC classification number: D02G3/367 ,  B21C3/08 ,  B21C37/047 ,  D06M11/42 ,  D06M11/83

Abstract: A method of thermally drawing fibers containing continuous crystalline metal nanowires therein includes forming a preform comprising an inner core and an outer cladding, wherein at least one of the core and cladding has nanoelements dispersed therein. The preform is drawn through a heated zone to form a reduced size fiber. A second preform is then created from a plurality of fibers created from the reduced size fiber. The second preform is then drawn through the heated zone to form an elongated fiber containing continuous crystalline metallic nanowires therein having a maximum cross-sectional dimension of less than 100 nm. Optionally, a third or additional preforms are created from fibers made from the previous thermal drawing operation that are then drawn through the heated zone to form a fiber containing even smaller crystalline metal continuous nanowires therein. In some embodiments, only a single pass through the heated zone may be needed.

公开(公告)号：US20170204500A1

公开(公告)日：2017-07-20

申请号：US15410690

申请日：2017-01-19

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Xiaochun Li ,  Lianyi Chen

IPC: C22C1/10 ,  C22C23/04

CPC classification number: C22C23/04 ,  B22F2009/001 ,  B22F2998/10 ,  B82Y30/00 ,  B82Y40/00 ,  C22C32/0036 ,  C22C32/0042 ,  C22C32/0063 ,  C22C2001/1047 ,  Y02P10/24 ,  B22F1/0018

Abstract: A manufacturing method includes: 1) forming a melt including one or more metals; 2) introducing nanostructures into the melt at an initial volume fraction of the nanostructures; and 3) at least partially evaporating one or more metals from the melt so as to form a metal matrix nanocomposite including the nanostructures dispersed therein at a higher volume fraction than the initial volume fraction.

公开(公告)号：US20210222329A1

公开(公告)日：2021-07-22

申请号：US16308430

申请日：2017-06-07

Applicant: The Regents of the University of California

Inventor： Xiaochun Li ,  Abdolreza Javadi ,  Jingzhou Zhao

IPC: D01D5/02 ,  D01F6/66 ,  D01F1/09 ,  B29C43/00 ,  C08K3/08 ,  D01F6/76

Abstract: A method of forming a polymer-metal nanocomposite (PMNC) material with a substantially uniform dispersion of metal particles includes forming a composite solid preform by mixing a blend of micrometer-sized metal particles and polymer particles and subjecting the mixture to compression followed by sintering. The composite solid preform is drawn through a heated zone to form a reduced size fiber. The reduced size fiber is cut into segments and a next preform is formed using the bundle of the segments. The next preform is then drawn through the heated zone to form yet another reduced size fiber. This reduced size fiber may undergo one or more stack-and-draw operations to yield a final fiber having substantially uniform dispersion of nanometer-sized metal particles therein.