JP7469227B2 - 耐酸化性に優れた粒界強化型UNおよびU3Si2ペレット - Google Patents
耐酸化性に優れた粒界強化型UNおよびU3Si2ペレット Download PDFInfo
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- JP7469227B2 JP7469227B2 JP2020541427A JP2020541427A JP7469227B2 JP 7469227 B2 JP7469227 B2 JP 7469227B2 JP 2020541427 A JP2020541427 A JP 2020541427A JP 2020541427 A JP2020541427 A JP 2020541427A JP 7469227 B2 JP7469227 B2 JP 7469227B2
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- additive
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- fissile material
- u3si2
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- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- High Energy & Nuclear Physics (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
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Description
本発明は、エネルギー省との契約第DE-NE0008222号に基づく政府支援の下でなされたものである。米国政府は、本発明に対して一定の権利を有している。
https://doi.org/10.1007/s10853-008-3008-0
Claims (5)
- U3Si2から成り、粉末状で、粒界を有する粒子より成る核分裂性物質(12)を耐酸化性材料から選択した添加物(14)と混合するステップと、
当該核分裂性物質と当該添加物の混合物を加圧してペレットにするステップと、
当該ペレットを、当該添加物の融点を超える焼結温度で焼結することにより、当該添加物(14)を溶融させて当該核分裂性物質(12)の粒界内部に浸透させ、当該ペレットを緻密化させるステップと
を含み、
当該添加物の融点は当該核分裂性物質の融点よりも低いことを特徴とする方法。 - UNおよびU3Si2から成る群より選択した核分裂性物質(12)の粒子であって、粒界を有する圧縮および緻密化された粒子より成るペレットと、
当該核分裂性物質の当該粒界の少なくとも一部を覆う耐酸化性添加物(14)と
より成り、
当該耐酸化性添加物の融点は当該核分裂性物質の焼結温度よりも高く、当該耐酸化性添加物のメジアン粒度は当該核分裂性物質のメジアン粒度よりも小さい、原子燃料。 - 前記核分裂性物質(12)はUNであり、前記耐酸化性添加物(14)は、タングステン、タングステンを少なくとも50%の原子濃度で含む合金、およびUO2からなる群より選択される、請求項2に記載の原子燃料。
- U3Si2から成る核分裂性物質(12)の粒子であって、粒界を有する圧縮および緻密化された粒子より成るペレットと、
当該核分裂性物質の当該粒界の少なくとも一部を覆う耐酸化性添加物(14)と
より成り、
当該耐酸化性添加物の融点は当該核分裂性物質の焼結温度よりも低く、当該耐酸化性添加物は溶融して当該粒界の少なくとも一部に浸透している、原子燃料。 - 前記耐酸化性添加物(14)の量は、前記核分裂性物質(12)の20重量%未満である、請求項2に記載の原子燃料。
Applications Claiming Priority (5)
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US201862623621P | 2018-01-30 | 2018-01-30 | |
US62/623,621 | 2018-01-30 | ||
US201862655421P | 2018-04-10 | 2018-04-10 | |
US62/655,421 | 2018-04-10 | ||
PCT/US2019/015618 WO2019152388A1 (en) | 2018-01-30 | 2019-01-29 | Grain boundary enhanced un and u3si2 pellets with improved oxidation resistance |
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JP2021512308A JP2021512308A (ja) | 2021-05-13 |
JP7469227B2 true JP7469227B2 (ja) | 2024-04-16 |
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US (2) | US11145425B2 (ja) |
EP (1) | EP3747026A4 (ja) |
JP (1) | JP7469227B2 (ja) |
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WO (1) | WO2019152388A1 (ja) |
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WO2015184041A1 (en) * | 2014-05-30 | 2015-12-03 | Schlumberger Canada Limited | Degradable powder blend |
KR20200105956A (ko) | 2018-01-30 | 2020-09-09 | 웨스팅하우스 일렉트릭 컴퍼니 엘엘씨 | 내산화성이 개선된 입계 강화된 UN 및 U₃Si₂펠릿 |
CN110993134B (zh) * | 2019-11-12 | 2023-01-06 | 中国工程物理研究院材料研究所 | 一种U3Si2合金燃料的制备方法 |
JP7393305B2 (ja) | 2020-06-18 | 2023-12-06 | 三菱重工業株式会社 | 窒化ウラン燃料の製造方法 |
US20220044830A1 (en) * | 2020-08-05 | 2022-02-10 | Uchicago Argonne, Llc | Coated fuel pellets, methods of making and using same |
CN113628767A (zh) * | 2021-09-03 | 2021-11-09 | 中国工程物理研究院材料研究所 | 一种高辐照稳定性uo2陶瓷燃料及其制备方法和应用 |
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US3290223A (en) * | 1963-11-12 | 1966-12-06 | Jr John M Blocher | Coated nuclear reactor fuel particle of uo2 and method of making the same |
US5180527A (en) * | 1990-04-03 | 1993-01-19 | Nippon Nuclear Fuel Development Co., Ltd. | Nuclear fuel pellets |
JP3076058B2 (ja) * | 1990-04-03 | 2000-08-14 | 日本核燃料開発株式会社 | 核燃料ペレットおよびその製造方法 |
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KR20200105956A (ko) | 2018-01-30 | 2020-09-09 | 웨스팅하우스 일렉트릭 컴퍼니 엘엘씨 | 내산화성이 개선된 입계 강화된 UN 및 U₃Si₂펠릿 |
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