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公开(公告)号：US4816193A
公开(公告)日：1989-03-28
申请号：US99687
申请日：1987-09-18
申请人： Martin Peehs , Heinrich Bayer , Ulrich Jenczio , Jurgen Laucht , Sieghard Hellmann , Gerhard Dichtjar , Wolfgang Dorr , Georg Maier
发明人： Martin Peehs , Heinrich Bayer , Ulrich Jenczio , Jurgen Laucht , Sieghard Hellmann , Gerhard Dichtjar , Wolfgang Dorr , Georg Maier
摘要： Method for manufacturing sintered oxidic nuclear fuel bodies by molding uranium oxide starting powder, a mixture of uranium oxide and plutonium oxide starting powder or of uranium-plutonium oxide mixed-crystal starting powder to form blanks and by a heat treatment of these blanks with a U.sub.4 O.sub.9 or (U, Pu).sub.4 O.sub.9 crystal phase developed in them to a degree which can be crystallographically detected at a sintering temperature in the range of 1000.degree. to 1400.degree. C. in an oxidizing and subsequently in a reducing gas atmosphere. The starting powder and/or the blanks are preroasted at a roasting temperature below the sintering temperature in a roasting gas atmosphere with oxidizing action and with an oxygen potential in which the U.sub.4 O.sub.9 (U, Pu).sub.4 O.sub.9 crystal phase is developed and cooled down subsequently to a starting temperature below the roasting temperature in an inert or oxidizing cooling-down gas atmosphere. Starting from this starting temperature, the blanks are heated to the sintering temperature in an inert or oxidizing heating gas atmosphere while maintaining the U.sub.4 O.sub.9 or the (U, Pu).sub.4 O.sub.9 crystal phase.
摘要翻译： 通过模制氧化铀原料粉末，氧化铀和钚氧化物起始粉末或铀 - 钚氧化物混合起始粉末的混合物来形成烧结氧化物核燃料体的方法以形成坯料并且通过用U4O9热处理这些坯料 或（U，Pu）4 O 9结晶相在一定程度上可以在氧化并随后在还原气体气氛中在1000-1400℃范围内的烧结温度下进行晶体学检测。 起始粉末和/或坯料在具有氧化作用的焙烧气体气氛中的焙烧温度下焙烧，并且其中U4O9（U，Pu）4 O9晶相的氧电位被开发并随后冷却 在惰性或氧化冷却气氛中的起始温度低于焙烧温度。 从该起始温度开始，将坯料在惰性或氧化加热气体气氛中加热至烧结温度，同时保持U4O9或（U，Pu）4 O9晶相。
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公开(公告)号：US4578229A
公开(公告)日：1986-03-25
申请号：US436303
申请日：1982-10-25
申请人： Helmut Assmann , Gerhard Dichtjar , Wolfgang Dorr , Georg Maier , Viktor Mathieu , Martin Peehs
发明人： Helmut Assmann , Gerhard Dichtjar , Wolfgang Dorr , Georg Maier , Viktor Mathieu , Martin Peehs
摘要： Method for the manufacture of oxidic nuclear fuel bodies by a heat treatment of blanks obtained from UO.sub.2 starting power or a mixture of UO.sub.2 and PuO.sub.2 starting powder at a treatment temperature in the range of 1000.degree. C. to 1400.degree. initially in a gas atmosphere with oxidizing action and subsequently in a gas atmosphere with reducing action. The oxygen potential of the gas atmosphere with oxidizing action is kept in a range in which a crystallographically demonstrable U.sub.4 O.sub.9 or (U, Pu).sub.4 O.sub.9 crystal phase is generated in the blanks during the heating to the treatment temperature in this gas atmosphere with oxidizing action.
摘要翻译： 在氧气核燃料体的热处理中，由UO2起动力获得的坯料或者在1000℃至1400℃的处理温度下的UO2和PuO2起始粉末的混合物在气体气氛中进行热处理的方法， 氧化作用，随后在具有还原作用的气体气氛中。 具有氧化作用的气体气氛的氧气被保持在在氧化作用的气体气氛中加热至处理温度期间在坯料中产生结晶学上可见的U4O9或（U，Pu）4O9结晶相的范围内。
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公开(公告)号：US4348339A
公开(公告)日：1982-09-07
申请号：US104973
申请日：1979-12-18
IPC分类号： C04B35/622 , G21C3/00 , G21C3/62 , G21C21/00 , G21C21/02
摘要： Manufacture of oxidic nuclear fuel bodies with oxygen-to-metal ratio of 2.0.+-.0.02 at relatively low sintering temperature in range of 1000.degree.-1400.degree. C. Nuclear fuel powder with an arbitrary oxygen-to-metal ratio is mixed with a grain-growth promoting additive (U.sub.3 O.sub.8) and pressed into blanks. The blanks are subjected to a two-stage operation in a furnace at 1000.degree.-1400.degree. C. - an oxidative-sintering stage in a carbon dioxide atmosphere and a reducing stage in a hydrogen containing atmosphere.
摘要翻译： 在比较低的烧结温度下在1000°-1400℃的范围内，氧 - 金属比为2.0 +/- 0.02的氧化核燃料体的制造。具有任意氧 - 金属比的核燃料粉末与 颗粒生长促进添加剂（U3O8）并压成坯料。 坯料在1000-140℃的炉中进行两阶段操作 - 在二氧化碳气氛中的氧化烧结阶段和在含氢气氛中的还原阶段。
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