Production of metal nanoparticles from precursors having low reduction potentials
    61.
    发明申请
    Production of metal nanoparticles from precursors having low reduction potentials 失效
    从具有低还原电位的前体制备金属纳米粒子

    公开(公告)号:US20070290175A1

    公开(公告)日:2007-12-20

    申请号:US11443262

    申请日:2006-05-31

    Applicant: Hyungrak Kim

    Inventor: Hyungrak Kim

    Abstract: Metallic nanoparticles and processes for forming metallic nanoparticles. In one aspect, the invention is to a process for forming nanoparticles comprising the step of heating a solution comprising a first metal precursor and a nucleating agent (e.g., nucleate nanoparticles or a nucleate precursor) in the presence of a base under conditions effective to form the nanoparticles. The first metal precursor preferably comprises a cationic metal species having a low reduction potential. The invention is also to a nanoparticle or plurality of nanoparticles, each nanoparticle comprising a core having a largest dimension less than about 10 nm; and a metal layer substantially surrounding the core and having a largest dimension less than about 200 nm.

    Abstract translation: 金属纳米粒子和形成金属纳米粒子的方法。 一方面,本发明涉及一种形成纳米颗粒的方法,其包括在有效形成的条件下,在碱的存在下加热包含第一金属前体和成核剂(例如,成核的纳米颗粒或成核前体)的溶液的步骤 纳米颗粒。 第一金属前体优选包含具有低还原电位的阳离子金属物质。 本发明还涉及纳米颗粒或多个纳米颗粒,每个纳米颗粒包含具有小于约10nm的最大尺寸的芯; 以及基本上围绕所述芯并具有小于约200nm的最大尺寸的金属层。

    Solder paste and electronic device
    62.
    发明申请
    Solder paste and electronic device 有权
    焊膏和电子设备

    公开(公告)号:US20070245852A1

    公开(公告)日:2007-10-25

    申请号:US11812005

    申请日:2007-06-14

    Abstract: In solder paste of the present invention, a first metal powder, a second metal powder, and a third metal powder are dispersed in a flux or a thermosetting resin. The first metal powder includes a first metal material such as Cu, Ag, Au, or Pd that serves as a base metal. A second metal material such as Sn or In that has a melting point lower than that of the first metal material is coated on the surface of the first metal material. The second metal powder is made of a metal material such as Sn or In that has a melting point lower than that of the first metal material. The third metal powder such as a Cu, Ag, Au or Pd powder has an average particle diameter smaller than that of the first metal material and can form compounds with the second metal material and the second metal powder. Accordingly, the likelihood of unreacted components remaining after a heat treatment can be suppressed, and even when a reflow treatment is repeated a plurality of times, a decrease in the bonding strength of solder bonding can be prevented.

    Abstract translation: 在本发明的焊膏中,将第一金属粉末,第二金属粉末和第三金属粉末分散在助熔剂或热固性树脂中。 第一金属粉末包括用作贱金属的第一金属材料如Cu,Ag,Au或Pd。 具有比第一金属材料低的熔点的第二金属材料如Sn或In涂覆在第一金属材料的表面上。 第二金属粉末由熔点低于第一金属材料的Sn或In等金属材料制成。 第三金属粉末如Cu,Ag,Au或Pd粉末的平均粒径小于第一金属材料的平均粒径,并可与第二金属材料和第二金属粉末形成化合物。 因此,可以抑制在热处理后残留的未反应成分的可能性,并且即使重复多次回流处理,也可以防止焊接接合的接合强度的降低。

    Electroconductive fine particle and anisotropically electroconductive material
    64.
    发明申请
    Electroconductive fine particle and anisotropically electroconductive material 有权
    导电细粒和各向异性导电材料

    公开(公告)号:US20070190349A1

    公开(公告)日:2007-08-16

    申请号:US10590861

    申请日:2005-09-01

    Applicant: Hiroya Ishida

    Inventor: Hiroya Ishida

    Abstract: It is the object of the present invention to provide a conductive particle which has excellent adhesion between a base particle and a conductive layer, a conductive layer being resistant to breaking, impact resistance being improved, and an anisotropic conductive material using the conductive particle. The prevent invention is a conductive particle, which comprises a base particle and a conductive layer formed on a surface of said base particle, said conductive layer having a non-crystal nickel plating layer in contact with the surface of said base particle and a crystal nickel plating layer, and a proportion of a nickel crystal grain aggregate oriented in a nickel (111) plane derived from an integrated intensity ratio in X-ray diffraction measurement being 80% or more.

    Abstract translation: 本发明的目的是提供一种导电颗粒,其具有优异的基础颗粒和导电层之间的粘附性,耐断裂性,耐冲击性得到改善的导电层以及使用该导电颗粒的各向异性导电材料。 防止发明是一种导电颗粒,其包括基体颗粒和形成在所述基础颗粒的表面上的导电层,所述导电层具有与所述基础颗粒的表面接触的非结晶镍镀层和结晶镍 并且在X射线衍射测定中,从镍(111)面取向的镍晶粒聚集体的积分强度比的比例为80%以上。

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