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    ZAMAK STABILIZATION OF SPENT SODIUM-COOLED REACTOR FUEL ASSEMBLIES
    1.
    发明申请
    ZAMAK STABILIZATION OF SPENT SODIUM-COOLED REACTOR FUEL ASSEMBLIES 有权

    公开(公告)号：US20220336118A1

    公开(公告)日：2022-10-20

    申请号：US17230182

    申请日：2021-04-14

    申请人： TerraPower, LLC

    发明人： Robert A. Corbin ,  Pavel Hejzlar ,  John E. Truax ,  Mark R. Werner

    IPC分类号： G21F9/30 ,  G21F1/08 ,  C22C18/04 ,  C23C22/72

    摘要： Methods and systems for stabilizing spent fuel assemblies from sodium-cooled nuclear reactors using Zamak are described herein. It has been determined that there is a synergism between Zamak and sodium that allows Zamak to form thermally-conductive interface with the sodium-wetted surfaces of the fuel assemblies. In the method, one or more spent fuel assemblies are removed from the sodium coolant pool and placed in a protective sheath. The remaining volume of the sheath is then filled with liquid Zamak. To a certain extent Zamak will dissolve and alloy with sodium remaining on the fuel assemblies. Excess sodium that remains undissolved is displaced from the sheath by the Zamak fill. The Zamak is then cooled until solid and the sheath sealed. The resulting Zamak-stabilized spent fuel assembly is calculated to have sufficient internal thermal conductivity to allow it to be stored and transported without the need for liquid cooling.

    Process for improving the corrosion resistance of ferrous metal parts
    3.
    发明授权
    Process for improving the corrosion resistance of ferrous metal parts 失效
    提高黑色金属部件耐腐蚀性的工艺

    公开(公告)号：US4608092A

    公开(公告)日：1986-08-26

    申请号：US713633

    申请日：1985-03-19

    申请人： Yves Tremoureux ,  Jean-Luc Reynaud

    发明人： Yves Tremoureux ,  Jean-Luc Reynaud

    IPC分类号： C23C8/48 ,  C23C8/54 ,  C23C8/80 ,  C23C22/72 ,  C23C22/00 ,  C23C16/34 ,  C23C16/44 ,  C23C22/78

    CPC分类号： C23C8/80 ,  C23C22/72

    摘要： A process for improving the corrosion resistance of ferrous metal parts also subject to heat and chemical treatment following nitriding in association or not with carburizing and/or sulfurizing essentially comprises immersing the parts in a known bath of molten salts to which is added a sufficient quantity of a halogenophosphate having formula:M.sub.2 (PO.sub.3 X).sub.min which X and is fluorine and M is a metal of subgroup Ia, IIa or IIb of the periodic table of elements, having the valency m. The preferred halogenophosphate is sodium, potassium, calcium or zinc monofluorophosphate. The molten salt bath may be of the oxidizing type, comprising for example, 65% by weight KOH, 25% NaNO.sub.3, 10% Na.sub.2 CO.sub.3, or of the neutral type, for example a eutectic mixture of 50% BaCl.sub.2, 30% CaCl.sub.2, 20% NaCl. The halogenophosphate may be added in proportions of 0.1 to 20 g per kilogram of salt bath.

    摘要翻译： 一种用于提高耐腐蚀性的方法，也可以在渗氮与渗碳和/或硫化相关联之后进行加热和化学处理，主要包括将部件浸入已知的熔盐浴中，向其中加入足量的 具有式：M2（PO3X）m的卤代磷酸酯，其中X和是氟，M是元素周期表的Ia，IIa或IIb族的金属，具有化合价m。 优选的卤代磷酸盐是单氟磷酸钠，钾，钙或锌。 熔融盐浴可以是氧化型，包括例如65重量％的KOH，25％的NaNO 3，10％的Na 2 CO 3或中性的，例如50％的BaCl 2，30％的CaCl 2，20的共晶混合物 ％NaCl。 卤磷酸盐可以以每公斤盐浴0.1-20g的比例加入。

    Method for spreading noble metal on iron particle surface
    9.
    发明申请
    Method for spreading noble metal on iron particle surface 审中-公开
    贵金属在铁颗粒表面上铺展的方法

    公开(公告)号：US20070089807A1

    公开(公告)日：2007-04-26

    申请号：US11584669

    申请日：2006-10-23

    申请人： Ya-Hsuan Liou ,  Shang-Lien Lo ,  Chin-Jung Lin

    发明人： Ya-Hsuan Liou ,  Shang-Lien Lo ,  Chin-Jung Lin

    IPC分类号： C23C22/72

    CPC分类号： C23C8/80 ,  C23C18/54

    摘要： A method for spreading noble metal on an iron particle surface includes: providing a plurality of iron particles, cleaning the iron particles up and separating the iron particles from cleaning water, drying the iron particles, placing the iron particles into a heater oven with a reaction gas, heating the iron particles for oxidation reduction, placing the iron articles into a noble-metal-ion solution for immersion plating, processing the iron particles with a solid-and-liquid separation, and then drying the iron particles. Wherein the heating temperature of the heating oven ranges from 300 to 500 degrees centigrade and the duration thereof ranges from 3 to 5 hours. Whereby, the iron particles are activated first in order to react with the noble metal so that the activity and the uniformity of the noble metal attached to the iron surface is improved.

    摘要翻译： 一种在铁颗粒表面上铺展贵金属的方法包括：提供多个铁颗粒，清除铁颗粒并将铁颗粒与清洁水分离，干燥铁颗粒，将铁颗粒放入加热炉中进行反应 气体，加热铁颗粒进行氧化还原，将铁制品置于用于浸镀的贵金属离子溶液中，将固体和液体分离的铁颗粒加工，然后干燥铁颗粒。 其中，加热炉的加热温度为300〜500℃，持续时间为3〜5小时。 由此，铁颗粒首先被活化以与贵金属反应，从而提高了附着在铁表面上的贵金属的活性和均匀性。

    Black oxide coating for stainless steels
    10.
    发明授权
    Black oxide coating for stainless steels 失效
    黑色氧化物涂层用于不锈钢

    公开(公告)号：US3915759A

    公开(公告)日：1975-10-28

    申请号：US43177074

    申请日：1974-01-08

    申请人： CORAL CHEMICAL CO

    发明人： SMOLLETT THOMAS J ,  STIPANOVIC BOZIDAR

    IPC分类号： B60S1/38 ,  C23C22/72 ,  C23C1/00

    CPC分类号： C23C22/72 ,  B60S1/38 ,  B60S1/3801

    摘要： A method of blackening ferritic and/or martensitic stainless steels which comprises treating said steels by (a) immersing said steel in a fused alkali metal hydroxide-salt bath, which as conventionally produced may initially contain from 3 to 8% water of hydration, for a period of 1-30 minutes, at a temperature of 540*-720*F., and (b) continually adding water during the heat treatment in step (a); said water can be introduced in the form of steam to replenish the original water of hydration of the fused bath and the amount of water added ranges from an effective amount to about 15% by weight of the fused salt mixture. This addition of water in the ranges 1-15% and 3-8% replenishes and reinvigorates the molten salt bath so that the bath likewise has a satisfactory water content based on the molten salt mixture. A preferred fused salt mixture is the eutectic mixture of sodium and potassium hydroxide, and an additive agent such as an alkali metal molybdate may be added to the fused salt mix.

    摘要翻译： 一种黑化铁素体和/或马氏体不锈钢的方法，其包括通过以下步骤处理所述钢：（a）将所述钢浸入熔融碱金属氢氧化物 - 盐浴中，所述熔融碱金属氢氧化物 - 盐浴通常可以含有3至8％的水合水， 时间为1-30分钟，温度为540-720°F，（b）在步骤（a）的热处理过程中连续加水; 所述水可以以蒸汽的形式引入以补充熔融浴的原始水合水，并且加入的水的量从有效量至约15重量％的熔融盐混合物。 在1-15％和3-8％的范围内加入水补充并重新熔化熔融盐浴，使得浴基于熔融盐混合物同样具有令人满意的含水量。 优选的熔融盐混合物是氢氧化钠和氢氧化钾的共晶混合物，并且可以向熔融盐混合物中加入添加剂如碱金属钼酸盐。