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    • 4. 发明授权
    • Zirconium alloy fuel cladding for operation in aggressive water chemistry
    • 锆合金燃料包层用于侵蚀性水化学
    • US09139895B2
    • 2015-09-22
    • US10935157
    • 2004-09-08
    • David WhiteDaniel R. LutzYang-Pi LinJohn SchardtGerald Potts
    • David WhiteDaniel R. LutzYang-Pi LinJohn SchardtGerald Potts
    • C22F1/18C22C16/00
    • C22F1/186C22C16/00
    • Disclosed herein are zirconium-based alloys and methods of fabricating nuclear reactor components, particularly fuel cladding tubes, from such alloys that exhibit improved corrosion resistance in aggressive coolant compositions. The fabrication steps include a late-stage β-treatment on the outer region of the tubes. The zirconium-based alloys will include between about 1.30 and 1.60 wt % tin; between about 0.06 and 0.15 wt % chromium; between about 0.16 and 0.24 wt % iron, and between 0.05 and 0.08 wt % nickel, with the total content of the iron, chromium and nickel comprising above about 0.31 wt % of the alloy and will be characterized by second phase precipitates having an average size typically less than about 40 nm. The final finished cladding will have a surface roughness of less than about 0.50 μm Ra and preferably less then about 0.10 μm Ra.
    • 本文公开了锆基合金和从这种在侵蚀性冷却剂组合物中表现出改进的耐腐蚀性的合金制造核反应堆部件,特别是燃料包壳管的方法。 制造步骤包括在管的外部区域的后期和后处理。 锆基合金将包括约1.30至1.60重量%的锡; 约0.06至0.15重量%的铬; 约0.16至0.24重量%的铁,以及0.05至0.08重量%的镍,其中铁,铬和镍的总含量高于合金的约0.31重量%,其特征在于具有平均尺寸的第二相沉淀 通常小于约40nm。 最终完成的包层将具有小于约0.50μmRa的表面粗糙度,优选小于约0.10μmRa的表面粗糙度。
    • 5. 发明申请
    • METHODS OF DETERMINING IN-REACTOR SUSCEPTIBILITY OF A ZIRCONIUM-BASED ALLOY TO SHADOW CORROSION
    • 确定基于锆的合金的腐蚀反应物的腐蚀性的方法
    • US20120033779A1
    • 2012-02-09
    • US12850244
    • 2010-08-04
    • Daniel Reese LutzYoung Jin KimYang-Pi Lin
    • Daniel Reese LutzYoung Jin KimYang-Pi Lin
    • G21C17/00
    • G21C17/06G01N17/04G21C17/00
    • A method of determining in-reactor susceptibility of a zirconium-based alloy to shadow corrosion according to a non-limiting embodiment of the present invention may include immersing a first electrode and a second electrode in an electrolytic solution. The first electrode may be formed of the zirconium-based alloy, while the second electrode may be formed of a metallic material suitable for use in a nuclear reactor and having a higher electrochemical corrosion potential than the zirconium-based alloy. The method may additionally include irradiating the immersed first and second electrodes with electromagnetic radiation. A galvanic current may then be measured between the first electrode and the second electrode to ascertain the relative in-reactor susceptibility of the zirconium-based alloy to shadow corrosion. The present invention allows a simplified and more rapid method of developing solutions that mitigate shadow corrosion, thereby potentially saving years of expensive in-reactor testing.
    • 根据本发明的非限制性实施例,确定锆基合金对阴影腐蚀的反应器内易感性的方法可以包括将第一电极和第二电极浸入电解液中。 第一电极可以由锆基合金形成,而第二电极可以由适于在核反应堆中使用并且具有比锆基合金更高的电化学腐蚀电位的金属材料形成。 该方法可以另外包括用电磁辐射照射浸没的第一和第二电极。 然后可以在第一电极和第二电极之间测量电流,以确定锆基合金相对于反应器内的易受影响的腐蚀。 本发明允许简化和更快速的开发解决方案的方法,其减轻阴影腐蚀,从而潜在地节省了数年的昂贵的反应堆内测试。