JP2015137223A - セラミック構造体 - Google Patents
セラミック構造体 Download PDFInfo
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- JP2015137223A JP2015137223A JP2014011786A JP2014011786A JP2015137223A JP 2015137223 A JP2015137223 A JP 2015137223A JP 2014011786 A JP2014011786 A JP 2014011786A JP 2014011786 A JP2014011786 A JP 2014011786A JP 2015137223 A JP2015137223 A JP 2015137223A
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- silicon carbide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
- C01B32/97—Preparation from SiO or SiO2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
- C01B32/963—Preparation from compounds containing silicon
- C01B32/977—Preparation from organic compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
- C04B35/62272—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on non-oxide ceramics
- C04B35/62277—Fibres based on carbides
- C04B35/62281—Fibres based on carbides based on silicon carbide
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/06—Casings; Jackets
- G21C3/07—Casings; Jackets characterised by their material, e.g. alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
【解決手段】セラミック構造体1は、被覆管2等に適用され、炭素と、天然存在比に比較して28Siが濃縮された珪素とからなる炭化珪素(SiC)から構成され、炭化珪素における28Siの濃縮度は99%以上であり、SiC焼結体、CVD−SiC、SiC繊維、SiC/SiC複合材のいずれかのうちの少なくとも一つの形態で構成される。
【選択図】図3
Description
SiO2から、例えばカーボン電極を使用したアーク炉を用いて還元し、Siを得ることができる。得られたSiは純度を高めるために、トリクロロメチルシラン、クロロシランなどの一部の水素原子が塩素などのハロゲンに置換された化合物を合成した後、蒸留し純度を高めたのち、再度Siを得ることができる。更に純度を高めるためには、FZ法、CZ法などが適用できる。これらの方法は、半導体産業で広く使われている方法である。
このSiをCH3Clとの直接反応させることによりSi(CH3)4(テトラメチルシラン)を得ることができる。SiとCH3Clとの反応では、メチル基および塩素がシリコンに結合し、SiClx(CH3)4−x(ただし、x=1,2,3)の化合物が形成される。反応後の生成物を蒸留することにより目的のSi(CH3)4を精製することができる。
Si(CH3)4を原料として気相熱分解法でポリカルボシランを得ることができる。この方法はFritzらによって行われたことが「ポリカルボシランを前駆物質とする炭化ケイ素繊維の製造に関する研究」http://ir.library.osaka−u.ac.jp/dspaceに記載されている。
SiC繊維は、ポリカルボシランを前駆体として、これを溶融紡糸し繊維化し、不融処理を行った後焼成することによって製造される。不融化処理の方法は、熱酸素架橋、電子線照射法などが利用できる。
CVD法でSiCを得るための原料を製造する。分解してSiCを得ることができればどのような化合物を経由しても良い。例えば、SiH4、SiClH3、SiCl2H2、SiCl3H、SiCl4などのシラン系化合物の他、前記シラン系化合物一部がメチル基に置換された化合物でも良い。炭素を含有しない原料を用いるときは、炭化水素を混合させることによってCVD−SiCを得ることができる。
CVD炉内に、基材を配置し、800〜2000℃の雰囲気下で、前記の28Siを用いた原料ガスを供給する。基材の表面には、28Siが天然存在比と比較して濃縮されたCVD−SiCが生成される。
得られた粉末SiC(7)に焼結助剤、バインダーを加えた後、成形、脱脂、焼結することによりSiC焼結体を得ることができる。焼結助剤としては、Al2O3、Al2O3−Y2O3、B、B4Cなどが挙げられる。バインダーとしては、ポリビニルアルコールなどの樹脂が利用できる。成形は、CIP(Cold Isostatic Press)法、一軸プレス、などが利用でき、特に限定されない。脱脂では、バインダーを除去する。焼結は、例えば1500〜2300℃で処理する。
このようにして得られるSiC繊維(4)、CVD−SiC(6)、SiC焼結体(8)を複合させることによりSiC/SiC複合材(9)を得ることができる。SiC/SiC複合材を得るためには、例えば、SiC焼結体の原材料にSiC繊維またはCVD−SiCを混合する方法、SiC繊維またはSiC焼結体にCVD−SiCを被覆する方法、が挙げられる。
2:被覆管
Claims (3)
- 炭素と、天然存在比に比較して28Siが濃縮された珪素とからなる炭化珪素(SiC)から構成されるセラミック構造体。
- 請求項1に記載のセラミック構造体であって、
前記炭化珪素における28Siの濃縮度は99%以上であるセラミック構造体。 - 請求項1または2に記載のセラミック構造体であって、
前記炭化珪素は、SiC焼結体、CVD−SiC、SiC繊維、SiC/SiC複合材のいずれかのうちの少なくとも一つの形態で構成されるセラミック構造体。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014011786A JP6408221B2 (ja) | 2014-01-24 | 2014-01-24 | 原子炉用部材 |
PCT/JP2015/051442 WO2015111591A1 (ja) | 2014-01-24 | 2015-01-21 | セラミック構造体 |
CN201510030159.2A CN104803684A (zh) | 2014-01-24 | 2015-01-21 | 陶瓷结构体 |
US14/602,321 US20150360958A1 (en) | 2014-01-24 | 2015-01-22 | Ceramic structure |
EP15152307.3A EP2899176A1 (en) | 2014-01-24 | 2015-01-23 | Ceramic structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014011786A JP6408221B2 (ja) | 2014-01-24 | 2014-01-24 | 原子炉用部材 |
Publications (2)
Publication Number | Publication Date |
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JP2015137223A true JP2015137223A (ja) | 2015-07-30 |
JP6408221B2 JP6408221B2 (ja) | 2018-10-17 |
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JP2014011786A Active JP6408221B2 (ja) | 2014-01-24 | 2014-01-24 | 原子炉用部材 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150360958A1 (ja) |
EP (1) | EP2899176A1 (ja) |
JP (1) | JP6408221B2 (ja) |
CN (1) | CN104803684A (ja) |
WO (1) | WO2015111591A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019210172A (ja) * | 2018-06-01 | 2019-12-12 | 株式会社Ihi | 複合材料の製造方法 |
US11862352B2 (en) | 2021-03-18 | 2024-01-02 | Kabushiki Kaisha Toshiba | Channel box and fuel assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105469839B (zh) * | 2015-12-29 | 2017-11-10 | 西北工业大学 | SiC/SiC复合材料核包壳管端口封装的塞头及封装方法 |
US20190108922A1 (en) * | 2017-10-06 | 2019-04-11 | Westinghouse Electric Company, Llc | Removable mandrel for automating process to manufacture ceramic composite nuclear fuel cladding tubes |
WO2019149386A1 (en) * | 2018-01-31 | 2019-08-08 | Westinghouse Electric Sweden Ab | A tubular ceramic component suitable for being used in a nuclear reactor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003092263A (ja) * | 2001-07-12 | 2003-03-28 | National Institute Of Advanced Industrial & Technology | 炭化珪素薄膜の製造方法 |
JP2008501977A (ja) * | 2004-06-07 | 2008-01-24 | ウエスチングハウス・エレクトリック・カンパニー・エルエルシー | 原子力発電所における燃料格納容器障壁等に使用される多層セラミックチューブ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2155158C1 (ru) * | 1999-10-07 | 2000-08-27 | Институт химии высокочистых веществ РАН | Способ получения моноизотопного кремния si28 |
JP2003053153A (ja) | 2001-08-20 | 2003-02-25 | Japan Atom Energy Res Inst | レーザーによるシリコン同位体の高効率分離・濃縮法 |
NO319447B1 (no) * | 2002-07-05 | 2005-08-15 | Scatec As | Fremgangsmate for separasjon av isotoper |
JP2010023013A (ja) | 2008-07-18 | 2010-02-04 | 3R Corp | ケイ素の同位体を分離する方法 |
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2014
- 2014-01-24 JP JP2014011786A patent/JP6408221B2/ja active Active
-
2015
- 2015-01-21 CN CN201510030159.2A patent/CN104803684A/zh active Pending
- 2015-01-21 WO PCT/JP2015/051442 patent/WO2015111591A1/ja active Application Filing
- 2015-01-22 US US14/602,321 patent/US20150360958A1/en not_active Abandoned
- 2015-01-23 EP EP15152307.3A patent/EP2899176A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003092263A (ja) * | 2001-07-12 | 2003-03-28 | National Institute Of Advanced Industrial & Technology | 炭化珪素薄膜の製造方法 |
JP2008501977A (ja) * | 2004-06-07 | 2008-01-24 | ウエスチングハウス・エレクトリック・カンパニー・エルエルシー | 原子力発電所における燃料格納容器障壁等に使用される多層セラミックチューブ |
Non-Patent Citations (1)
Title |
---|
LUNDQVIST, BJORN, ET AL.: "Thermal Conductivity of Isotopically Enriched Silicon Carbide", 19TH INTERNATIONAL WORKSHOP ON THERMAL INVESTIGATIONS OF ICS AND SYSTEMS (THERMINIC), JPN6017034296, 2013, pages 58 - 61, XP032527284, ISSN: 0003754912, DOI: 10.1109/THERMINIC.2013.6675243 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019210172A (ja) * | 2018-06-01 | 2019-12-12 | 株式会社Ihi | 複合材料の製造方法 |
JP7052570B2 (ja) | 2018-06-01 | 2022-04-12 | 株式会社Ihi | 複合材料の製造方法 |
US11862352B2 (en) | 2021-03-18 | 2024-01-02 | Kabushiki Kaisha Toshiba | Channel box and fuel assembly |
JP7427626B2 (ja) | 2021-03-18 | 2024-02-05 | 株式会社東芝 | チャンネルボックス及び燃料集合体 |
Also Published As
Publication number | Publication date |
---|---|
EP2899176A1 (en) | 2015-07-29 |
JP6408221B2 (ja) | 2018-10-17 |
CN104803684A (zh) | 2015-07-29 |
US20150360958A1 (en) | 2015-12-17 |
WO2015111591A1 (ja) | 2015-07-30 |
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