-
公开(公告)号：US5896432A
公开(公告)日：1999-04-20
申请号：US928123
申请日：1997-09-12
CPC分类号： G21C17/00 , G01N17/02 , G21Y2002/103
摘要： An electrochemical corrosion potential sensor is fabricated by initially joining an electrical conductor to a sensor tip. An electrical cable is joined to the tip conductor. Ceramic powder is fused under heat around the tip conductor to form an integral annular electrically insulating band therearound to insulate the tip from the cable. The band may be formed by plasma spraying, or it may be molded and sintered to seal it to the tip and conductor without brazing. In a preferred embodiment, the band is formed of yttria-stabilized-zirconia or magnesia-stabilized-zirconia.
摘要翻译： 通过最初将电导体连接到传感器尖端来制造电化学腐蚀电位传感器。 电缆连接到尖端导体。 陶瓷粉末在尖端导体周围加热熔化，以在其周围形成一体的环形电绝缘带，以使尖端与电缆绝缘。 带可以通过等离子喷涂形成，或者可以将其模制和烧结以将其密封到尖端和导体而不进行钎焊。 在优选的实施方案中，该带由氧化钇稳定的氧化锆或氧化镁稳定的氧化锆形成。
-
公开(公告)号：US06357284B1
公开(公告)日：2002-03-19
申请号：US09389882
申请日：1999-09-03
IPC分类号： G01M2726
CPC分类号： G01N17/02
摘要： A ceramic sensor is disclosed that includes a ceramic tube having a closed end and an open end, and a metal sleeve having open first and second ends. The ceramic tube is formed of stabilized zirconia. The metal sleeve extends about the open end of the ceramic tube and is sealingly joined thereto at a contact region by a brazeless bond resulting from hot isostatic pressing. A mixture of metal and metal oxide powders is provided within the ceramic tube adjacent the closed end, and a conducting wire extends from the mixture of metal and metal oxide powders to the second end of the metal sleeve.
摘要翻译： 公开了一种陶瓷传感器，其包括具有封闭端和开口端的陶瓷管，以及具有开放的第一端和第二端的金属套管。 陶瓷管由稳定的氧化锆形成。 金属套筒围绕陶瓷管的开口端部延伸，并且通过由热等静压制成的无钎焊接头在接触区域处密封地连接到陶瓷管的开口端。 金属和金属氧化物粉末的混合物在邻近封闭端的陶瓷管内提供，导线从金属和金属氧化物粉末的混合物延伸到金属套筒的第二端。
-
3.发明授权Co-deposition of palladium during oxide film growth in high-temperature water to mitigate stress corrosion cracking 失效在高温水中氧化膜生长期间钯的共沉积以减轻应力腐蚀开裂
公开(公告)号：US5768330A
公开(公告)日：1998-06-16
申请号：US729024
申请日：1996-10-10
IPC分类号： G21D1/00 , B01J37/03 , C23C8/80 , C23C12/00 , C23F11/08 , C23F11/18 , G01N17/02 , G21C17/02 , G21C17/022 , G21C19/28 , G21C19/30 , G21C19/307 , G21D3/08 , G21C9/00
CPC分类号： G21C17/0225 , B01J37/031 , C23C12/00 , C23C8/80 , C23F11/08 , C23F11/18 , G01N17/02 , G21C17/02 , G21C19/28 , G21C19/30 , G21C19/307 , G21C17/022 , G21Y2002/102 , G21Y2002/103 , G21Y2002/104 , G21Y2002/201 , G21Y2002/204 , G21Y2004/10 , G21Y2004/101 , G21Y2004/20 , G21Y2004/30 , G21Y2004/302 , G21Y2004/40
摘要： A method for improving the performance and longevity of coatings of metal deposited from aqueous solutions of inorganic, organic or oraganometallic metal compounds. The method involves co-deposition of noble metal or corrosion-inhibiting non-noble metal during growth of oxide film on a component made of alloy, e.g., stainless steels and nickel-based alloys. The result is a metal-doped oxide film having a relatively longer life in the reactor operating environment. In particular, incorporation of palladium into the film provides greatly increased catalytic life as compared to palladium coatings which lie on the oxide surface.
摘要翻译： 一种改善由无机，有机或金属金属化合物的水溶液沉积的金属涂层的性能和寿命的方法。 该方法包括在由诸如不锈钢和镍基合金的合金制成的部件上氧化膜生长期间共沉积贵金属或腐蚀抑制非贵金属。 结果是在反应器操作环境中具有相对较长寿命的金属掺杂氧化物膜。 特别地，与位于氧化物表面上的钯涂层相比，将钯引入膜中提供了大大增加的催化寿命。
-
公开(公告)号：US08048192B2
公开(公告)日：2011-11-01
申请号：US11320707
申请日：2005-12-30
IPC分类号： B22F1/00
CPC分类号： B01J23/42 , B01J8/20 , B01J8/382 , B01J8/388 , B01J19/0086 , B01J35/0013 , B01J37/0221 , B01J37/033 , B01J37/342 , B01J2208/00212 , B01J2208/003 , B22F1/0018 , B22F9/30 , B22F2998/00 , B82Y30/00 , Y10S977/773 , B22F1/0022 , B22F2203/11 , B22F2203/13 , B22F1/0014
摘要： Provided are methods and systems for generating nanoparticles from an inorganic precursor compound using a hydrothermal process within at least one CSTR or PFR maintained at an elevated temperature and an elevated pressure and a treatment vessel in which this reaction solution can be applied to one or more catalyst substrates. In operation, the reaction solution may be maintained within the CSTR at a substantially constant concentration and within a reaction temperature range for a reaction period sufficient to obtain nanoparticles having a desired average particle size of, for example, less than 10 nm formation and/or deposition. Variations of the basic method and system can provide, for example, the generation of complex particle size distribution profiles, the selective deposition of a multi-modal particle size distribution on a single substrate.
摘要翻译： 提供了使用在保持在升高的温度和升高的压力下的至少一个CSTR或PFR中的水热法从无机前体化合物产生纳米颗粒的方法和系统，以及处理容器，其中该反应溶液可以应用于一种或多种催化剂 底物。 在操作中，反应溶液可以以基本上恒定的浓度保持在CSTR内并且在反应温度范围内，反应时间足以获得具有例如小于10nm形成的所需平均粒度的纳米颗粒和/或 沉积 基本方法和系统的变化可以提供例如复合粒度分布曲线的产生，在单个基底上选择性沉积多模态粒度分布。
-
5.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。
-
6.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。
-
公开(公告)号：US20140360606A1
公开(公告)日：2014-12-11
申请号：US14298191
申请日：2014-06-06
IPC分类号： B01F13/02
CPC分类号： B01F15/0412 , B01F5/0495 , F16K19/003 , G05D11/006 , Y10T137/2218
摘要： A system and method of injecting a chemical into a high pressure process stream without pumps or other active components. The system utilizes the differential pressure created by resistive losses of downstream components within a high pressure process stream. A bypass side stream is taken from an upstream pressure location and returned to the downstream side of the resistive inline process component. The chemical solution vessel is pressurized by the higher side of the pressure differential. The solution then passes through a flow controlling capillary tube exiting on the lower pressure differential side into the bypass stream. The high flow rate chemically diluted bypass stream then returns to the process stream at the lower differential process stream tie-in. The chemical solution is isolated from the process water pressuring the vessel by a movable separating device preventing mixing of the two fluids. The vessel can also be pressurized by gas.
摘要翻译： 将化学品注入高压工艺流而不使用泵或其他活性组分的系统和方法。 该系统利用由高压工艺流中的下游部件的电阻损耗产生的压差。 旁路侧流从上游压力位置获取，并返回到电阻内联过程组件的下游侧。 化学溶液容器由压力差的较高侧加压。 然后溶液通过从低压差侧出来的流动控制毛细管进入旁路流。 然后，高流量化学稀释的旁路流在较低的差分过程流束缚下返回到过程流。 化学溶液是通过可移动的分离装置从加工水中分离出来的，以防止两种流体的混合。 容器也可以用气体加压。
-
8.发明申请Method of manufacture of noble metal/zinc oxide hybrid product for simultaneous dose reduction and SCC mitigation of nuclear power plants 审中-公开贵金属/氧化锌混合产品的制造方法，用于同时减量和SCC减排核电厂公开(公告)号：US20080107228A1
公开(公告)日：2008-05-08
申请号：US11979419
申请日：2007-11-02
IPC分类号： G21C19/28
CPC分类号： G21C17/0225 , B01J23/60 , B22F1/025 , B22F9/24 , C01G9/00 , C01G55/00 , C01P2004/61 , C01P2004/62 , C01P2004/80 , C01P2004/84 , G21C19/307 , Y10T137/0324
摘要： Composite particle comprising a zinc containing compound such as zinc oxide and a noble metal such a platinum, and process for fabrication thereof. The particles facilitate simultaneous controlled introduction of the zinc and noble metal species into a nuclear reactor.
摘要翻译： 包含诸如氧化锌的含锌化合物和铂等贵金属的复合粒子及其制造方法。 这些颗粒有助于同时控制将锌和贵金属物质引入核反应堆。
-
9.发明授权Temperature-based method for controlling the amount of metal applied to metal oxide surfaces to reduce corrosion and stress corrosion cracking 有权用于控制施加到金属氧化物表面的金属的量的基于温度的方法以减少腐蚀和应力腐蚀开裂公开(公告)号：US06697449B2
公开(公告)日：2004-02-24
申请号：US10118926
申请日：2002-04-10
IPC分类号： G21C900
CPC分类号： G21C19/307 , C23F11/18 , G21Y2002/103 , G21Y2002/201 , G21Y2004/20 , G21Y2004/40
摘要： Method for controlling the amount of metal atoms deposited into an oxide layer present on a metal surface, which metal atoms increase the corrosion resistance of metal when present in the oxide film, wherein the metal surface is submerged in water at a selected temperature within the range of about to 200° to 550° F.; and a solution of a compound containing the metal which increases the corrosion resistance of the metal surface when present in the oxide film is injected into the water. The compound decomposes at the selected temperature to release atoms of the metal which incorporate in the oxide film at a desired loading.
摘要翻译： 用于控制沉积在金属表面上的氧化物层中的金属原子的量的方法，该金属原子在存在于氧化物膜中时增加了金属的耐腐蚀性，其中金属表面在选定温度范围内浸没在水中 约为200°至550°F。 并且当存在于氧化物膜中时，含有金属的化合物溶液，其将金属表面的耐腐蚀性提高到水中。 该化合物在所选择的温度下分解以释放掺入氧化物膜中的金属原子以所需的载量。
-
10.发明授权Radiation-induced palladium doping of metals to protect against stress corrosion cracking 失效金属的辐射诱导钯掺杂，以防止应力腐蚀开裂
公开(公告)号：US5602888A
公开(公告)日：1997-02-11
申请号：US416656
申请日：1995-04-05
IPC分类号： G21D1/00 , B01J37/03 , C23C30/00 , C23F11/08 , C23F11/18 , G01N17/02 , G21C3/07 , G21C17/02 , G21C17/022 , G21C19/28 , G21C19/30 , G21C19/307 , G21D3/08 , G21C9/00
CPC分类号： G21C17/0225 , B01J37/031 , C23F11/08 , C23F11/18 , G01N17/02 , G21C17/02 , G21C17/022 , G21C19/28 , G21C19/30 , G21C19/307 , G21C3/07 , G21Y2002/102 , G21Y2002/103 , G21Y2002/104 , G21Y2002/204 , G21Y2004/10 , G21Y2004/20 , G21Y2004/30 , G21Y2004/40 , Y02E30/40
摘要： A method for mitigating crack growth on the surface of stainless steel or other alloy components in a water-cooled nuclear reactor wherein a solution or suspension of a compound containing a noble metal is injected into the coolant water while the reactor is not generating nuclear heat, e.g., during shutdown or recirculation pump heatup. During shutdown, the reactor coolant water reaches temperatures as low as 120.degree. F., in contrast to the water temperature of 550.degree. F. during normal operation. During pump heatup, the water temperature reaches 400.degree.-450.degree. F. At these reduced temperatures, the rate of thermal decomposition of the injected noble metal compound is reduced. However, radiation-induced decomposition also occurs inside the reactor. In particular, the noble metal compound can be decomposed by the gamma radiation emanating from the nuclear fuel core of the reactor. The noble metal compound decomposes under reactor thermal and radiation conditions to release ions/atoms of the noble metal which incorporate in or deposit on the oxide film formed on the stainless steel and other alloy components. As a result, the electrochemical potential of the metal surface is maintained at a level below the critical potential in the presence of low levels of hydrogen to protect against intergranular stress corrosion cracking.
摘要翻译： 一种用于减轻水冷核反应堆中不锈钢或其他合金组分表面上的裂纹扩展的方法，其中将含有贵金属的化合物的溶液或悬浮液注入冷却水中，同时反应器不产生核热， 例如在停机或再循环泵加热期间。 在停机期间，反应堆冷却水的温度低至120°F，与正常运行时的550°F水温相反。 在泵加热期间，水温达到400°-450°F。在这些降低的温度下，注入的贵金属化合物的热分解速率降低。 然而，辐射诱导的分解也发生在反应器内部。 特别地，贵金属化合物可以通过从反应器的核燃料芯发出的γ射线分解。 贵金属化合物在反应器热和辐射条件下分解，以释放掺入或沉积在不锈钢和其它合金组分上形成的氧化膜上的贵金属的离子/原子。 因此，在低水平的氢气存在下，金属表面的电化学势能保持在低于临界电位的水平，以防止晶间应力腐蚀开裂。
-
-
-
-
-
-
-
-
-
搜索结果
40 条记录 (耗时 0.022 秒)
