ELECTROMAGNETIC SHIELDING MATERIAL
    2.
    发明公开

    公开(公告)号:US20240057305A1

    公开(公告)日:2024-02-15

    申请号:US18265771

    申请日:2021-09-28

    发明人: Yukito YAMAMOTO

    IPC分类号: H05K9/00

    CPC分类号: H05K9/0084

    摘要: An electromagnetic wave shielding material includes a metal layer for ground connection provided as an outermost layer of a laminate; wherein only one surface of the metal layer for ground connection is laminated on the insulating layer via the adhesive layer, and assuming d1 is a thickness and ε1 is a Young's modulus of the adhesive layer on the one surface, d2 is a thickness and ε2 is a Young's modulus of the metal layer for ground connection, and ε3 is a composite Young's modulus of the adhesive layer on the one surface and the metal layer for ground connection, the following relational expression is satisfied: ε3/ε2>0.60; in which, ε3=ε1 (d1/(d1+d2))+ε2 (d2 (d1+d2)).

    COPPER ALLOY POWDER HAVING Si COATING FILM AND METHOD FOR PRODUCING SAME

    公开(公告)号:US20220362844A1

    公开(公告)日:2022-11-17

    申请号:US17771552

    申请日:2021-06-25

    IPC分类号: B22F1/16 B22F1/05

    摘要: Provided is a copper alloy powder which is a metal powder to be used for additive manufacturing by a laser beam system, and which is able to achieve a higher laser absorption rate and additionally suppress heat transfer through necking, and a method for producing this copper alloy powder. A copper alloy powder which contains one or more elements selected from among Cr, Zr and Nb in a total amount of 15 wt % or less, with a balance being made up of Cu and unavoidable impurities, and which is characterized in that a coating film containing Si atoms is formed on the copper alloy powder, and a Si concentration in the copper alloy powder with the coating film is 5 wt ppm or more and 700 wt ppm or less.

    Copper alloy strip exhibiting improved dimensional accuracy after press-working

    公开(公告)号:US11499207B2

    公开(公告)日:2022-11-15

    申请号:US16496269

    申请日:2018-03-20

    IPC分类号: C22C9/06 C22F1/08

    摘要: Provided is a Corson alloy having improved bending workability and also having high dimensional accuracy after press-working. A copper alloy strip which is a rolling material, the rolling material containing from 0 to 5.0% by mass of Ni or from 0 to 2.5% by mass of Co, the total amount of Ni+Co being from 0.2 to 5% by mass; from 0.2 to 1.5% by mass of Si, the balance being copper and unavoidable impurities, wherein the rolling material has a surface satisfying the relationship: 1.0≤I(200)/I0(200)≤5.0; wherein an area ratio of Cube orientation {100} is from 2 to 10% in EBSD measurement of a rolling parallel cross section; and wherein a ratio: (an average crystal grain size of Cube orientation {100} of the rolling parallel cross section)/(an average crystal grain size of the rolling parallel cross section) is from 0.75 to 1.5.