公开(公告)号：US20130333519A1

公开(公告)日：2013-12-19

申请号：US13977259

申请日：2011-12-23

Applicant: Jerome Allenou ,  Meryl Brothier ,  Francois Charollais ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

Inventor： Jerome Allenou ,  Meryl Brothier ,  Francois Charollais ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

IPC: G21C21/02 ,  B22F9/20

CPC classification number: G21C21/02 ,  B22F9/20 ,  B22F2999/00 ,  C22C1/04 ,  C22C28/00 ,  C22C43/00 ,  G21C3/60 ,  Y02E30/35 ,  Y02E30/38 ,  B22F2201/04 ,  B22F2201/05 ,  B22F2202/15

Abstract: The invention relates to a method for preparing a powder of an alloy based on uranium and molybdenum in a metastable γ phase, which comprises: a) putting at least one first reagent selected from uranium oxides and mixtures thereof, uranium fluorides and mixtures thereof, into contact with a second reagent consisting in molybdenum and a third reagent consisting in a reducing metal, the first, second and third reagents being in a divided form; b) reacting the reagents at a temperature≧the melting temperature of the third reagent and under an inert atmosphere, whereby this reaction leads to the formation of the alloy comprising uranium and molybdenum in the form of a powder, for which the particles are covered with a reducing metal oxide or fluoride layer; c) cooling the so formed powder at a rate at least equal to 450° C./hour; and d) removing the reducing metal oxide or fluoride layer which covers the particles of the powder of the alloy comprising uranium and molybdenum. It also relates to a method for manufacturing a nuclear fuel implementing this method.Applications: Manufacturing of nuclear fuels, notably for MTRs.

Abstract translation: 本发明涉及一种在亚稳γ相中制备基于铀和钼的合金粉末的方法，其包括：a）将至少一种选自氧化铀及其混合物的铀氟化物及其混合物的第一试剂投入 与由钼组成的第二试剂和由还原金属组成的第三试剂接触，第一试剂，第二试剂和第三试剂为分开形式; b）在温度> =第三试剂的熔融温度和惰性气氛下使试剂反应，由此该反应导致形成粉末形式的包含铀和钼的合金，其中颗粒被覆盖 与还原金属氧化物或氟化物层; c）以至少等于450℃/小时的速率冷却如此形成的粉末; 以及d）除去覆盖包含铀和钼的合金粉末颗粒的还原性金属氧化物或氟化物层。 它还涉及一种实现该方法的制造核燃料的方法。 应用：核燃料的制造，特别是中期审查。

公开(公告)号：US20130336833A1

公开(公告)日：2013-12-19

申请号：US13977201

申请日：2011-12-23

Applicant: Jerome Allenou ,  Francois Charollais ,  Meryl Brothier ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

Inventor： Jerome Allenou ,  Francois Charollais ,  Meryl Brothier ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

IPC: C22C43/00 ,  B22F9/20

CPC classification number: C22C43/00 ,  B22F1/0055 ,  B22F9/20 ,  B22F2998/10 ,  C22C1/04 ,  G21C3/60 ,  Y02E30/35 ,  Y02E30/38 ,  B22F1/0088

Abstract: The invention relates to a powder of an alloy based on uranium and molybdenum in a metastable γ phase, which is formed of particles which have an elongation index at least equal to 1.1, a non-zero closed porosity value and which are composed of grains having a molybdenum content, for which the variations within the same grain are of at most 1% by mass.It also relates to a method allowing preparation of this alloy powder as well as to the use of said powder for manufacturing nuclear fuels and targets for producing radioisotopes.Applications: Manufacturing of nuclear fuels, notably for experimental nuclear reactors; manufacturing of targets for producing radioisotopes, notably for the medical industry.

Abstract translation: 本发明涉及一种基于铀和钼的亚稳态γ相中的合金粉末，其由具有至少等于1.1的伸长率指数，非零闭合孔隙度值的颗粒形成，并且由具有 相同颗粒内的变化量为1质量％以下的钼含量。 它还涉及允许制备该合金粉末的方法以及用于制造核燃料的所述粉末和用于制备放射性同位素的靶的用途。 应用：核燃料的制造，特别是实验核反应堆; 制造生产放射性同位素的目标，特别是医疗行业。

公开(公告)号：US09574257B2

公开(公告)日：2017-02-21

申请号：US13977201

申请日：2011-12-23

Applicant: Jerome Allenou ,  Francois Charollais ,  Meryl Brothier ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

Inventor： Jerome Allenou ,  Francois Charollais ,  Meryl Brothier ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

IPC: C22C43/00 ,  B22F9/20 ,  G21C3/60 ,  B22F1/00 ,  C22C1/04

CPC classification number: C22C43/00 ,  B22F1/0055 ,  B22F9/20 ,  B22F2998/10 ,  C22C1/04 ,  G21C3/60 ,  Y02E30/35 ,  Y02E30/38 ,  B22F1/0088

Abstract: The invention relates to a powder of an alloy based on uranium and molybdenum in a metastable γ phase, which is formed of particles which have an elongation index at least equal to 1.1, a non-zero closed porosity value and which are composed of grains having a molybdenum content, for which the variations within the same grain are of at most 1% by mass. It also relates to a method allowing preparation of this alloy powder as well as to the use of said powder for manufacturing nuclear fuels and targets for producing radioisotopes. Applications: Manufacturing of nuclear fuels, notably for experiment nuclear reactors; manufacturing of targets for producing radioisotopes, notably for the medical industry.

Abstract translation: 本发明涉及一种基于铀和钼的亚稳态γ相的合金粉末，其由具有至少等于1.1的伸长指数，非零闭孔率值的颗粒形成，并且由具有 相同颗粒内的变化量为1质量％以下的钼含量。 它还涉及允许制备该合金粉末的方法以及用于制造核燃料的所述粉末和用于制备放射性同位素的靶的用途。 应用：核燃料的制造，特别是实验核反应堆; 制造生产放射性同位素的目标，特别是医疗行业。

公开(公告)号：US09190180B2

公开(公告)日：2015-11-17

申请号：US13977259

申请日：2011-12-23

Applicant: Jerome Allenou ,  Meryl Brothier ,  Francois Charollais ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

Inventor： Jerome Allenou ,  Meryl Brothier ,  Francois Charollais ,  Xaviere Iltis ,  Olivier Tougait ,  Mathieu Pasturel ,  Henri Noel

IPC: B22F9/20 ,  G21C3/60 ,  G21C21/02 ,  C22C1/04 ,  C22C28/00 ,  C22C43/00

CPC classification number: G21C21/02 ,  B22F9/20 ,  B22F2999/00 ,  C22C1/04 ,  C22C28/00 ,  C22C43/00 ,  G21C3/60 ,  Y02E30/35 ,  Y02E30/38 ,  B22F2201/04 ,  B22F2201/05 ,  B22F2202/15

Abstract: A method for preparing a powder of an alloy based on uranium and molybdenum in a metastable γ phase is provided, which comprises: a) putting at least one first reagent selected from uranium oxides and mixtures thereof, uranium fluorides and mixtures thereof, into contact with a second reagent consisting in molybdenum and a third reagent consisting in a reducing metal, the first, second and third reagents being in a divided form; b) reacting the reagents at a temperature≧the melting temperature of the third reagent and under an inert atmosphere, whereby this reaction leads to the formation of the alloy comprising uranium and molybdenum in the form of a powder, for which the particles are covered with a reducing metal oxide or fluoride layer; c) cooling the so formed powder at a rate at least equal to 450° C./hour; and d) removing the reducing metal oxide or fluoride layer which covers the particles of the powder of the alloy comprising uranium and molybdenum.

Abstract translation: 提供了一种在亚稳γ相中制备基于铀和钼的合金粉末的方法，其包括：a）将至少一种选自氧化铀及其混合物的铀氟化物及其混合物的第一试剂与 由钼组成的第二试剂和由还原金属组成的第三试剂，第一试剂，第二试剂和第三试剂为分开形式; b）在温度≥第三试剂的熔融温度和惰性气氛下使试剂反应，由此该反应导致形成粉末形式的包含铀和钼的合金，其中颗粒被覆盖 还原金属氧化物或氟化物层; c）以至少等于450℃/小时的速率冷却如此形成的粉末; 以及d）除去覆盖包含铀和钼的合金粉末颗粒的还原性金属氧化物或氟化物层。

公开(公告)号：US20140294135A1

公开(公告)日：2014-10-02

申请号：US14126523

申请日：2012-06-21

Applicant: Jerome Allenou ,  Xavier Iltis ,  Francois Charollais ,  Olivier Tougait ,  Mathieu Pasturel ,  Stephanie Deputier

Inventor： Jerome Allenou ,  Xavier Iltis ,  Francois Charollais ,  Olivier Tougait ,  Mathieu Pasturel ,  Stephanie Deputier

IPC: G21C21/02 ,  G21C3/42 ,  C22C43/00 ,  B22F1/00

CPC classification number: G21C3/42 ,  B22F1/0085 ,  B22F1/02 ,  B22F3/00 ,  C22C1/0416 ,  C22C1/10 ,  C22C21/02 ,  C22C43/00 ,  C23C14/081 ,  C23C14/223 ,  C23C16/403 ,  C23C16/4417 ,  G21C3/60 ,  G21C21/02 ,  Y02E30/38 ,  Y10T428/2982

Abstract: The invention relates to a powder of an alloy comprising uranium and molybdenum in γ-metastable phase, a composition of powders comprising this powder, and the uses of said alloy powder and of said composition of powders.The alloy powder comprising uranium and molybdenum in γ-metastable phase according to the invention is formed of particles comprising a nucleus which consists of said alloy, and which is covered with a layer of alumina positioned in contact with this nucleus.Applications: manufacture of nuclear fuel elements and, in particular, of fuel elements for experimental nuclear reactors; manufacture of targets intended for production of radioelements, which are useful in particular for medical imaging, such as technetium 99m.

Abstract translation: 本发明涉及包含γ-亚稳相中的铀和钼的合金粉末，包含该粉末的粉末的组合物以及所述合金粉末和所述粉末组合物的用途。 包含根据本发明的γ-亚稳相中的铀和钼的合金粉末由包含由所述合金组成的核的颗粒形成，并且被覆有与该核接触的一层氧化铝。 应用：核燃料元件的制造，特别是制造实验核反应堆的燃料元件; 制造用于生产放射性元素的靶标，其特别适用于医学成像，例如99m锝。