利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

16 条记录 (耗时 0.046 秒)

    Application of catalytic nanoparticles to high temperature water systems to reduce stress corrosion cracking
    1.
    发明授权
    Application of catalytic nanoparticles to high temperature water systems to reduce stress corrosion cracking 失效
    催化纳米粒子在高温水体系中的应用，减少应力腐蚀开裂

    公开(公告)号：US06793883B2

    公开(公告)日：2004-09-21

    申请号：US09681993

    申请日：2001-07-05

    申请人： Peter Louis Andresen ,  Thomas Martin Angeliu ,  Young Jin Kim ,  Thomas Pompilio Diaz ,  Samson Hettiarachchi

    发明人： Peter Louis Andresen ,  Thomas Martin Angeliu ,  Young Jin Kim ,  Thomas Pompilio Diaz ,  Samson Hettiarachchi

    IPC分类号： C23F1102

    CPC分类号： G21C17/0225 ,  B01J23/42 ,  B01J35/0013 ,  B01J35/0053 ,  B01J35/006 ,  C23F11/18 ,  G21C19/307 ,  G21Y2002/103 ,  G21Y2004/20

    摘要： A method and system for reducing stress corrosion cracking in a hot water system, such as a nuclear reactor, by reducing the electrochemical corrosion potential of components exposed to high temperature water within the structure. The method includes the steps of: providing a reducing species to the high temperature water; and providing a plurality of noble metal nanoparticles having a mean particle size of up to about 100 nm to the high temperature water during operation of the hot water system. The catalytic nanoparticles, which may contain at least one noble metal, form a colloidal suspension in the high temperature water and provide a catalytic surface on which a reducing species reacts with least one oxidizing species present in the high temperature water. The concentration of the oxidizing species is reduced by reaction with the reducing species on the catalytic surface, thereby reducing the electrochemical corrosion potential of the component.

    摘要翻译： 通过降低暴露在结构内的高温水的组分的电化学腐蚀电位，减少诸如核反应堆的热水系统中的应力腐蚀开裂的方法和系统。 该方法包括以下步骤：向高温水提供还原物质; 并且在热水系统的操作期间向高温水提供多个平均粒度高达约100nm的贵金属纳米颗粒。 可以含有至少一种贵金属的催化纳米颗粒在高温水中形成胶体悬浮液，并提供催化表面，还原物质与高温水中存在的至少一种氧化物质反应。 通过与催化剂表面上的还原物质反应来降低氧化物质的浓度，从而降低组分的电化学腐蚀电位。

    System and method for determining noble metal concentrations in reactor coolant streams
    3.
    发明授权
    System and method for determining noble metal concentrations in reactor coolant streams 有权
    用于测定反应堆冷却剂流中贵金属浓度的系统和方法

    公开(公告)号：US06440297B1

    公开(公告)日：2002-08-27

    申请号：US09739181

    申请日：2000-12-18

    申请人： Young Jin Kim ,  John Yupeng Gui ,  Peter Louis Andresen ,  Thomas Pompilio Diaz ,  Samson Hettiarachchi

    发明人： Young Jin Kim ,  John Yupeng Gui ,  Peter Louis Andresen ,  Thomas Pompilio Diaz ,  Samson Hettiarachchi

    IPC分类号： G01N2726

    CPC分类号： G21C17/0225 ,  G01N27/423 ,  G01N33/1813 ,  G21C17/022 ,  G21Y2002/103

    摘要： A system and method for determining a noble metal concentration in a sample that is representative of a noble metal concentration in either a volume of water circulated through a nuclear reactor or a surface of a nuclear reactor component exposed to the volume of water. The system comprises: at least one standard having a predetermined concentration of the noble metal disposed its surface; an electrolyte bath for immersing one of the sample and the standard therein; an auxiliary electrode connectable to one of the sample and the standard; a power source connectable to a reference electrode and one of the standard and the sample; and a current measurement device capable of measuring a current passing between the auxiliary electrode and one of the sample and the standard. The power source is capable of providing a potential across the reference electrode and one of the sample and the standard, The noble metal concentration in the sample is determined relative to the predetermined concentration in the standard by comparing a sample current passing through the sample to a standard current passing through the standard.

    摘要翻译： 一种用于确定样品中贵金属浓度的系统和方法，其代表在通过核反应堆循环的水的体积或暴露于水体积的核反应堆组件的表面中的贵金属浓度。 该系统包括：具有预定浓度的贵金属的至少一个标准物，其设置在其表面上; 用于将样品和标准物中的一种浸入其中的电解质浴; 可连接到样品和标准品之一的辅助电极; 可连接到参考电极和标准品和样品之一的电源; 以及能够测量辅助电极和样品之一以及标准品之间的电流的电流测量装置。 电源能够在参考电极和样品和标准品之间提供电位。通过将通过样品的样品电流与一个样品的比较来确定样品中的贵金属浓度相对于标准中的预定浓度 标准电流通过标准。

    Electrochemical corrosion potential sensor and method of making
    7.
    发明授权
    Electrochemical corrosion potential sensor and method of making 失效
    电化学腐蚀电位传感器及其制作方法

    公开(公告)号：US06610185B2

    公开(公告)日：2003-08-26

    申请号：US09682725

    申请日：2001-10-10

    申请人： Young-Jin Kim ,  Reed Roeder Corderman ,  Peter Louis Andresen ,  Scott Andrew Weaver ,  Paul Joseph Martiniano

    发明人： Young-Jin Kim ,  Reed Roeder Corderman ,  Peter Louis Andresen ,  Scott Andrew Weaver ,  Paul Joseph Martiniano

    IPC分类号： G01N2726

    CPC分类号： G01N17/02 ,  Y10S29/004 ,  Y10T29/49002 ,  Y10T29/49826 ,  Y10T29/49888

    摘要： A sensor for measuring electrochemical corrosion potential, and a method for manufacturing a sensor, the sensor comprising a tubular ceramic probe having a closed tip at one end, the probe at least partially filled with a powder comprising metal and metal oxide; a metal support tube having one end receiving an opposite end of the probe, and joined thereto by a braze joint therewith; an electrical conductor extending through the support tube and into the probe, and having an end buried in the powder for electrical contact therewith; and a protective band bridging the probe and tube at the joint for sealing thereof, the protective band consisting essentially of a metallic coating.

    摘要翻译： 一种用于测量电化学腐蚀电位的传感器，以及一种用于制造传感器的方法，所述传感器包括管状陶瓷探针，所述管状陶瓷探针的一端具有封闭的尖端，所述探针至少部分地填充有包含金属和金属氧化物的粉末; 金属支撑管，其一端容纳探针的相对端，并通过其钎焊接头与其接合; 延伸穿过支撑管并进入探针的电导体，并且具有掩埋在粉末中的端部与其电接触; 以及在接头处将探针和管桥接的密封件的保护带，该保护带主要由金属涂层组成。

    Coated electrochemical corrosion potential sensor
    8.
    发明授权
    Coated electrochemical corrosion potential sensor 失效
    涂层电化学腐蚀电位传感器

    公开(公告)号：US5848113A

    公开(公告)日：1998-12-08

    申请号：US928112

    申请日：1997-09-12

    申请人： Young Jin Kim ,  Peter Louis Andresen ,  Dennis Michael Gray

    发明人： Young Jin Kim ,  Peter Louis Andresen ,  Dennis Michael Gray

    IPC分类号： G01N27/409 ,  G01N17/02 ,  G01N27/26 ,  G01N27/30 ,  G21C17/02 ,  G21C17/10

    CPC分类号： G01N17/02

    摘要： An electrochemical corrosion potential sensor includes a sensor tip electrically joined to a conductor, and a ceramic insulator joined to the tip around the conductor. A sleeve is joined to the insulator around the conductor, and is electrically insulated from the tip by the ceramic insulator. The insulator has an exposed surface axially separating the tip and sleeve, and a ceramic coating is bonded thereto for preventing dissolution of the insulator by reactor water. In a preferred embodiment, the ceramic insulator is sapphire, and the ceramic coating is yttria-stabilized-zirconia or magnesia-stabilized-zirconia which may be plasma sprayed over the insulator.

    摘要翻译： 电化学腐蚀电位传感器包括电连接到导体的传感器尖端和连接到导体周围的尖端的陶瓷绝缘体。 套管连接到导体周围的绝缘体，并且通过陶瓷绝缘体与顶端电绝缘。 绝缘体具有轴向分离尖端和套筒的暴露表面，并且将陶瓷涂层结合到其上以防止反应器水使绝缘体溶解。 在优选实施例中，陶瓷绝缘体是蓝宝石，并且陶瓷涂层是可以等离子体喷涂在绝缘体上的氧化钇稳定的氧化锆或氧化镁稳定的氧化锆。

    Metal hydride addition for reducing corrosion potential of structural steel
    9.
    发明授权
    Metal hydride addition for reducing corrosion potential of structural steel 失效
    金属氢化物添加用于降低结构钢的腐蚀电位

    公开(公告)号：US06024805A

    公开(公告)日：2000-02-15

    申请号：US968970

    申请日：1997-11-12

    申请人： Young Jin Kim ,  Peter Louis Andresen ,  George Charles Sogoian

    发明人： Young Jin Kim ,  Peter Louis Andresen ,  George Charles Sogoian

    IPC分类号： C23C26/00 ,  C23F11/18 ,  G21C17/022 ,  C23C8/00

    CPC分类号： G21C17/0225 ,  C23C26/00 ,  C23F11/185

    摘要： A method for reducing the corrosion potential of steel vessels and piping used in nuclear reactors, in particular steel vessels and piping carrying high temperature water and/or steam which has a concentration of oxygen therein. A metal hydride is added to the water, the hydrogen of such metal hydride combining with oxidizing agents, typically oxygen, present in the water to reduce the concentration of such oxidizing agents. In the preferred embodiment the metal of the metal hydride is a metal that is capable of reacting with oxygen to form a substantially non-water soluble and substantially electrically insulating compound on the surface of the steel, and in particular is one that may react with and become deposited or incorporated into a pre-existing thin oxide film layer on the surface of the steel to thereby render such thin oxide layer substantially non-electrically conducting.

    摘要翻译： 一种用于降低核反应堆，特别是含有其中具有氧浓度的高温水和/或蒸汽的钢容器和管道的钢管和管道的腐蚀电位的方法。 将金属氢化物加入到水中，这种金属氢化物的氢与存在于水中的氧化剂（通常为氧）结合，以降低这种氧化剂的浓度。 在优选的实施方案中，金属氢化物的金属是能够与氧反应以在钢的表面上形成基本上非水溶性且基本上电绝缘的化合物的金属，特别是可与 变得沉积或并入到钢表面上的预先存在的薄氧化膜层中，从而使这种薄氧化层基本上不导电。