Particulate Silver Powder and Method of Manufacturing Same
    193.
    发明申请
    Particulate Silver Powder and Method of Manufacturing Same 审中-公开
    颗粒状银粉及其制造方法相同

    公开(公告)号:US20080146680A1

    公开(公告)日:2008-06-19

    申请号:US11883343

    申请日:2006-02-01

    Applicant: Kimitaka Sato

    Inventor: Kimitaka Sato

    Abstract: A particulate silver powder has an average particle diameter measured by TEM observation (DTEM) of 200 nm or less, an aspect ratio of less than 2.50, and a {(DTEM)/(Dx)} of 5.0 or less (where (Dx) denotes X-ray crystallite size). The particulate silver powder has a content of each of I−, Cl−, SO42−, NO3− and CN− of 100 ppm or less. The particulate silver powder is obtained by subjecting a silver compound other than silver nitrate to reduction in an organic solvent having a boiling point of 85° C. or greater at a temperature of 85° C. or greater and in the presence of an organic protective agent.

    Abstract translation: 颗粒状银粉末通过TEM观察(DTEM)测定的平均粒径为200nm以下,长径比小于2.50,{(DTEM)/(Dx为5.0以下(Dx)表示X 微晶粒度),颗粒状银粉末的含量分别为I,O,S,S,S,S, 100ppm以下的颗粒状银粉末,通过使银化合物其他化合物得到, 比硝酸银还原85℃以上的沸点为85℃以上的有机溶剂,在有机保护剂的存在下还原。

    Low cost bronze powder for high performance bearings
    195.
    发明申请
    Low cost bronze powder for high performance bearings 审中-公开
    低成本青铜粉用于高性能轴承

    公开(公告)号:US20070231182A1

    公开(公告)日:2007-10-04

    申请号:US11710688

    申请日:2007-02-26

    Abstract: The present invention provides a new process for making a low cost powder for the manufacture of high performance bearings. Improved powders and sintered parts (e.g., bearings) are also provided. The powders of the present invention are formed by blending iron powder with fine cuprous oxide powder and elemental tin powder. The blended powders are then thermally treated under a reducing atmosphere to form a sintered cake, which is milled to a powder.

    Abstract translation: 本发明提供了制造用于制造高性能轴承的低成本粉末的新方法。 还提供了改进的粉末和烧结部件(例如,轴承)。 本发明的粉末通过将铁粉与精细的氧化亚铜粉末和元素锡粉末混合而形成。 然后将混合的粉末在还原气氛下进行热处理,以形成烧结块,将其研磨成粉末。

    Processes for sintering aluminum and aluminum alloy components
    198.
    发明申请
    Processes for sintering aluminum and aluminum alloy components 有权
    烧结铝和铝合金部件的工艺

    公开(公告)号:US20070110608A1

    公开(公告)日:2007-05-17

    申请号:US10580932

    申请日:2003-12-01

    Applicant: Jianxin Liu

    Inventor: Jianxin Liu

    Abstract: Methods for sintering aluminum powder comprise providing aluminum powder and heating the aluminum powder in a nitrogen atmosphere containing a partial pressure of water vapor in the range of about 0.001 kPa to about 0.020 kPa to sinter the aluminum powder to a transverse rupture strength of at least about 13.8 MPa. The aluminum powder is not pressed together by a mechanical force that substantially deforms particles of said aluminum powder either prior to or during the step of heating. Articles comprising sintered aluminum powder. The sintered aluminum powder has a transverse rupture strength of at least about 13.8 MPa. The microstructure of the sintered aluminum powder contains no compositional concentration gradients indicative of the use of a sintering aid and no evidence of particle deformation having occurred by an application of a mechanical force prior to or during the sintering of the aluminum powder.

    Abstract translation: 烧结铝粉的方法包括提供铝粉末并在含有约0.001kPa至约0.020kPa范围内的水蒸气分压的氮气气氛中加热铝粉,以将铝粉末烧结至至少约的横向断裂强度 13.8MPa。 铝粉末不通过在加热步骤之前或加热步骤期间使铝粉末的颗粒基本上变形的机械力而被压在一起。 包含烧结铝粉末的制品。 烧结铝粉末的横向断裂强度为至少约13.8MPa。 烧结铝粉末的微结构不包含指示使用烧结助剂的组成浓度梯度,并且在铝粉烧结之前或期间不施加机械力而没有发生颗粒变形的迹象。

    Fine nickel powder and process for producing the same
    199.
    发明申请
    Fine nickel powder and process for producing the same 有权
    细镍粉及其制造方法

    公开(公告)号:US20070101822A1

    公开(公告)日:2007-05-10

    申请号:US11266495

    申请日:2005-11-04

    Abstract: An efficient process for producing fine nickel powder, capable of metallizing the powder at low temperature to prevent its sintering, and fine nickel powder produced by the process, composed of particles having a flat shape, diameter of limited variations and uniform thickness, and suitable for internal electrodes for laminate ceramic capacitors of high electric capacity. The process comprises a step for forming a nickel compound coated with gelatin by adsorbing gelatin on preformed nickel compound particles with different size and shape (Step (A)), and another step for converting said nickel compound coated with gelatin into fine particles containing metallic nickel and nickel oxide by heating the nickel compound coated with gelatin produced in Step (A) in an inert gas atmosphere (Step (B)). It may include an additional step (Step (C)), subsequent to Step (B), for completely reducing nickel oxide in said fine particles by heating at temperature lower than that for Step (B) in a reducing gas atmosphere.

    Abstract translation: 制造能够在低温下金属化粉末以防止其烧结的细镍粉的有效方法,以及由具有平坦形状,有限变化直径和均匀厚度的颗粒形成的由该方法生产的细镍粉,并且适用于 用于层压陶瓷电容器的高电容的内部电极。 该方法包括通过将明胶吸附到具有不同尺寸和形状的预形成的镍化合物颗粒上形成涂有明胶的镍化合物的步骤(步骤(A)),以及将用明胶涂布的镍化合物转化为含有金属镍的细颗粒的另一步骤 和氧化镍,通过在惰性气体气氛中加热在步骤(A)中制备的用明胶制备的镍化合物(步骤(B))。 在步骤(B)之后,还可以包括在还原气体气氛中通过在低于步骤(B)的温度下进行加热来完全还原所述细颗粒中的氧化镍的附加步骤(步骤(C))。

    Making a molding tool
    200.
    发明授权
    Making a molding tool 失效
    制作成型工具

    公开(公告)号:US07169347B2

    公开(公告)日:2007-01-30

    申请号:US10450683

    申请日:2001-12-12

    Abstract: A die comprises metal-rich sections which form an inner wall and an outer wall of the die, respectively. Gradient sections are disposed adjacent to the metal-rich sections, respectively. Further, a ceramics-rich section is disposed between the gradient sections. A punch comprises an inner ceramics-rich section, a gradient section, and an outer metal-rich section. In the die, the composition ratio of metal gradually decreases from the metal-rich sections to the ceramics-rich section. Similarly, in the punch, the composition ratio of the metal gradually decreases from the metal-rich section to the ceramics-rich section.

    Abstract translation: 模具包括分别形成模具的内壁和外壁的富金属部分。 梯度部分分别设置在富金属部分附近。 此外,在梯度部之间设置富陶瓷部。 冲头包括内部富陶瓷部分,梯度部分和外部富金属部分。 在模具中,金属组成比从富金属部分逐渐减少到富陶瓷部分。 类似地,在冲头中,金属的富含部分向富陶瓷部分的组成比逐渐降低。

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