Austenitic stainless steel foil for laminate case of lithium ion secondary battery and method for producing the same
    95.
    发明专利
    Austenitic stainless steel foil for laminate case of lithium ion secondary battery and method for producing the same 有权
    用于锂离子二次电池的层压壳的奥氏体不锈钢箔及其制造方法

    公开(公告)号:JP2012092361A

    公开(公告)日:2012-05-17

    申请号:JP2010238063

    申请日:2010-10-22

    摘要: PROBLEM TO BE SOLVED: To provide a metallic foil for obtaining a laminate sheet for use in a lithium ion secondary battery, the laminate sheet being good in press formability, preventing a whitening phenomenon of a resin film layer in press forming, having excellent peeling resistance at a thermal fusion part when ear parts of a press molding are thermally fused with each other, and having strength higher than that of a laminate sheet prepared using an aluminum foil.SOLUTION: An austenitic stainless steel foil has: a composition having an Md value represented by the following formula (1) of 0.0-40.0; a thickness of 40-150 μm; an average number of crystal grains existing in the thickness direction of 5.0 pieces or more; and an average nitrogen concentration in a surface layer region from the surface to a depth of 2 nm of 5.0-9.5 mass%. Md value=551-462(C+N)-9.2Si-8.1Mn-29(Ni+Cu)-13.7Cr-18.5Mo...(1).

    摘要翻译: 要解决的问题:为了提供用于获得用于锂离子二次电池的层叠片材的金属箔,该层压片具有良好的冲压成形性,防止了冲压成型中的树脂膜层的发白现象,具有 挤压成形体的耳部彼此热熔融时的热熔融部分的优异的耐剥离性,并且具有比使用铝箔制备的层压片的强度更高的强度。 解决方案:奥氏体不锈钢箔具有以下公式(1)表示的Md值为0.0〜40.0的组成, 厚度为40-150μm; 在厚度方向上存在的平均晶粒数为5.0个以上; 从表面到2nm的深度的表面层区域的平均氮浓度为5.0-9.5质量%。 Md值= 551-462(C + N)-9.2Si-8.1Mn-29(Ni + Cu)-13.7Cr-18.5Mo(1)。 版权所有(C)2012,JPO&INPIT