Capacitor containing aluminum anode foil anodized in low water content glycerine-phosphate electrolyte without a pre-anodizing hydration step
    7.
    发明申请
    Capacitor containing aluminum anode foil anodized in low water content glycerine-phosphate electrolyte without a pre-anodizing hydration step 审中-公开
    含有铝阳极箔的电容器在低含水量的甘油磷酸盐电解质中阳极氧化,而没有预阳极氧化水合步骤

    公开(公告)号:US20050211565A1

    公开(公告)日:2005-09-29

    申请号:US11099917

    申请日:2005-04-06

    Abstract: A capacitor comprising an aluminum anode and a dielectric layer comprising phosphate doped aluminum oxide and process for making the capacitor. The capacitor has a CV Product of at least 9 μF-V/cm2 at 250 volts. Furthermore, the capacitor is formed by the process of: forming an aluminum plate; contacting the plate with an anodizing solution comprising glycerine, 0.1 to 1.0%, by weight, water and 0.01 to 0.5%, by weight, orthophosphate; applying a voltage to the aluminum plate and determining an initial current; maintaining the first voltage until a first measured current is no more than 50% of the initial current; increasing the voltage and redetermining the initial current; maintaining the increased voltage until a second measured current is no more than 50% of the redetermined initial current, and continuing the increasing of the voltage and maintaining the increased voltage until a final voltage is achieved.

    Abstract translation: 包括铝阳极和包含磷酸盐掺杂的氧化铝的介电层的电容器和用于制造电容器的工艺。 该电容器具有在250伏特下至少9μF-V / cm 2的CV产品。 此外,电容器通过以下工序形成:形成铝板; 使板与阳极氧化溶液接触,所述阳极氧化溶液包含0.1-1.0%(重量)的水和0.01至0.5%重量的正磷酸的甘油; 向铝板施加电压并确定初始电流; 保持第一电压,直到第一测量电流不超过初始电流的50%; 增加电压并重新确定初始电流; 维持增加的电压,直到第二测量电流不超过重新确定的初始电流的50%,并且继续增加电压并保持升高的电压直到达到最终电压。

    Surface treated titanium/titanium alloy articles and process for
producing
    8.
    发明授权
    Surface treated titanium/titanium alloy articles and process for producing 失效
    表面处理钛/钛合金制品及其制造方法

    公开(公告)号:US5185075A

    公开(公告)日:1993-02-09

    申请号:US603287

    申请日:1990-10-25

    CPC classification number: C25D11/26 C25D11/026

    Abstract: Surface treated titanium and titanium alloy articles having a thin anodized film substantially of TiO.sub.2 and characterized by a leakage current of less than about 25 microamps per square centimeter and a dielectric strength of at least one million volts per square centimeter, together with a high breakdown potential and high corrosion resistance, is disclosed. The process for forming such titanium and titanium alloy articles is also disclosed and is characterized by anodizing the articles in a substantially non-aqueous solution of a mineral acid and an organic solvent at a formation current above 0.1 microamps per square centimeter.

    Abstract translation: 表面处理的钛和钛合金制品具有基本上为TiO 2的薄阳极氧化膜,其特征在于小于约25微安/每平方厘米的泄漏电流和至少每平方厘米百万伏特的介电强度以及高击穿电位 并具有高耐腐蚀性。 还公开了用于形成这种钛和钛合金制品的方法,其特征在于以大于0.1微克/平方厘米的形成电流在无机酸和有机溶剂的基本上非水溶液中阳极氧化制品。

    Method of making electrolytic capacitor anodes
    9.
    发明授权
    Method of making electrolytic capacitor anodes 失效
    制造电解电容器阳极的方法

    公开(公告)号:US4664883A

    公开(公告)日:1987-05-12

    申请号:US875175

    申请日:1986-06-17

    CPC classification number: H01G9/052 B22F3/1025 B22F3/1121

    Abstract: A powder of a film-forming metal, such as tantalum, is combined with a binder of polyethylene oxide and ammonium carbonate. The powder-binder combination is pressed to form an anode body and then heated to about 300.degree. C. for about 4 hours to remove the binder. The polyethylene oxide is a superior binding agent producing anodes of high porosity and strength. The ammonium carbonate reacts with liquid polyethylene oxide to release large quantities of gas which sweeps the polyethylene oxide out of the anode pores, resulting in an unusually small amount of binder residue and yielding capacitors with low d.c. leakage.

    Abstract translation: 成膜金属如钽的粉末与聚环氧乙烷和碳酸铵的粘合剂组合。 将粉末 - 粘合剂组合物压制以形成阳极体,然后加热至约300℃约4小时以除去粘合剂。 聚环氧乙烷是产生高孔隙率和强度的阳极的优良粘合剂。 碳酸铵与液体聚环氧乙烷反应释放大量的气体,将聚环氧乙烷从阳极孔中排出,导致异常少量的粘结剂残留物,并产生低直流电容器。 泄漏。

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