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Deuterium Retention and Physical Sputtering of Low Activation Ferritic Steel

Plasma Science and technology 2005年第2期7卷 2737-2740页

作者： t.hino K.Yamaguchi Y.Yamauchi Y.Hirohata K.tsuzuki Y.Kusama Department of Nuclear Engineering Hokkaido University Sapporo060-8628 JapanDepartment of Nuclear Engineering Hokkaido UniversitySapporo060-8628 JapanDepartment of Nuclear Engineering Hokkaido UniversitySapporo060-8628 JapanDepartment of Nuclear Engineering Hokkaido UniversitySapporo060-8628 JapanJapan Atomic Energy Research Institute NakaIbaraki-ken311-0193 JapanJapan Atomic Energy Research Institute NakaIbaraki-ken311-0193 Japan

Low activation materials have to be developed toward fusion demonstrationreactors. Ferritic steel, vanadium alloy and SiC/SiC composite are candidate materials of the firstwall, vacuum vessel and blanket components, respectively. Although changes of mechanical-thermalproperties owing to neutron irradiation have been investigated so far, there is little data for theplasma material interactions, such as fuel hydrogen retention and erosion. In the present study,deuterium retention and physical sputtering of low activation ferritic steel, F82H, wereinvestigated by using deuterium ion irradiation apparatus. After a ferritic steel sample wasirradiated by 1.7 keV D^+ ions, the weight loss was measured to obtain the physical sputteringyield. the sputtering yield was 0.04, comparable to that of stainless steel. In order to obtain theretained amount of deuterium, technique of thermal desorption spectroscopy (tDS) was employed to theirradiated sample. the retained deuterium desorbed at temperature ranging from 450 K to 700 K, inthe forms of DHO, D_2, D_2O and hydrocarbons. Hence, the deuterium retained can be reduced by bakingwith a relatively low temperature. the fluence dependence of retained amount of deuterium wasmeasured by changing the ion fluence. In the ferritic steel without mechanical polish, the retainedamount was large even when the fluence was low. In such a case, a large amount of deuterium wastrapped in the surface oxide layer containing O and C. When the fluence was large, the thickness ofsurface oxide layer was reduced by the ion sputtering, and then the retained amount in the oxidelayer decreased. In the case of a high fluence, the retained amount of deuterium became comparableto that of ferritic steel with mechanical polish or SS 316 L, and one order of magnitude smallerthan that of graphite. When the ferritic steel is used, it is required to remove the surface oxidelayer for reduction of fuel hydrogen retention. Ferritic steel sample was exposed to the envi

关键词： ferritic steel fuel hydrogen retention sputtering yield first wall fusionreactor

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热处理对V-4ti合金氦的滞留与热解吸行为的影响

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核工业西南物理研究院年报 2004年第1期 78-79页

作者：刘翔 t．Yamada t.hino 不详 Hokkaldo University Japan

钒合金由于其低中子诱导的放射性和良好的高温性能被认为是未来聚变堆很有希望的第一壁和结构材料。因为氦可以通过放电清洗和中子嬗变产生，氦的滞留与热释放行为将是钒合金在聚变堆应用的重要课题。***领导的研究小组用1keV的氦离子... 详细信息

钒合金由于其低中子诱导的放射性和良好的高温性能被认为是未来聚变堆很有希望的第一壁和结构材料。因为氦可以通过放电清洗和中子嬗变产生，氦的滞留与热释放行为将是钒合金在聚变堆应用的重要课题。***领导的研究小组用1keV的氦离子注入到10^13-10^14He／cm^2的剂量研究了钒合金的氦俘获和热解吸机理以及预退火处理的影响。两群热解吸峰被发现，他们认为一个对应于氦，空位一杂质链，另一个对应于氦，带有钒合金原有的缺陷，如细小的析出物所俘获。既然钒合金原有的缺陷与退火处理有关，热处理对氦在钒合金中的滞留的影响是可以预期的，并且已被实验所证实。

关键词：钒合金热解吸谱热处理低中子诱导放射性高温性聚变堆

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Ct显示牵拉性支气管扩张/细支气管扩张与临床结局和死亡率的关系：COPDGene研究

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国际医学放射学杂志 2022年第6期45卷 732-733页

作者： A.Hata t.hino R.K.Putman M.Yanagawa t.Hida A.A.Menon 王明月

摘要肺间质异常（ILA）对临床预后不良的影响已有许多研究，但 ILA 的危险分层将更有助于临床实践。目的利用COPDGene 队列，研究 ILA 病人牵拉性支气管扩张/细支气管

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Progress in Physics and technology Developments for the Modification of Jt-60

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Plasma Science and technology 2004年第1期6卷 2141-2150页

作者： H.tamai M.Matsukawa G.Kurita N.Hayashi K.Urata Y.M.Miura K.Kizu K.tsuchiya A.Morioka Y.Kudo S.Sakurai K.Masaki t.Suzuki M.takechi Y.Kamada A.Sakasai S.Ishida K.Abe A.Ando t.Cho t.Fujii t.Fujita S.Goto K.Hananda A.Hatayama t.hino H.Horiike N.Hosogane M.Ichimura tsuji-Iio S.Itoh M.Katsurai M.Kikuchi A.Kohyama H.Kubo M.Kuriyama M.Matsuoka Y.Miura N.Miya t.Mizuuchi K.Nagasaki H.Ninomiya N.Nishino Y.Ogawa K.Okano t.Ozeki M.Saigusa M.Sakamoto M.Satoh M.Shimada R.Shimada M.Shimizu t.takagi Y.takase t.tanabe K.toi Y.Ueda Y.Uesugi K.Ushigusa Y.Yagi t.Yamamoto K.Yatsu K.Yoshikawa Japan Atomic Energy Research Institute Naka Ibarahi 311-0193 Japan tohoku University University of tsukuba Osaka University Kyushu University Keio University Hokkaido University tokyo Institute of technology the University of tokyo Kyoto University Mie University Hiroshima University Central research Institute of Electric Power Industry Ibaraki University ItER JCt Nagoya University National Institute for Fusion Science Kanazawa University National Institute of Advanced Industrial Science and technology

Recent progress in the physics and engineering design study for themodification programme of Jt-60 is presented. In order to achieve a steady state high-βplasmaoperation, which is the dominant issue of this programme, physics design for the MHD control and thestability analysis is investigated. Engineering design and the R & D for the superconducting coils,irradiation shield are performed well towards the mission of programme.

关键词： modification of Jt-60 physics design technology developments

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ENVIRONMENtAL FRIENDLY ANODIZING ON AZ91D MAGNESIUM ALLOYS AND COAtING CHARACtERIStICS

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Acta Metallurgica Sinica(English Letters) 2005年第3期18卷 411-415页

作者： A. Saijo M. hino M. Hiramatsu t. Kanadani Hori Metal Finishing Industry Co. Ltd. Abe Ochiai-cho Takahashi-shi Okayama 716-0061 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Industrial Technology Research Institute of Okayama Prefecture Haga Okayama-sh i Okayama 701-1296 Japan Graduate School of Okayama University of Science Ridai-cho Okayama-shi Okayam a 700-0005 Japan

An environmental friendly anodizing treatment (Anomag) from a phosphate-based so lution without heavy metals on AZ91D magnesium alloy was studied. the characteri stics of the coatings, such as structure, composition and corrosion resistance w ere investigated. the effects of this anodizing treatment on the mechanical prop erties were examined. X-ray diffraction (XRD) analysis revealed that the structu re of the coatings is amorphous or glassy. In salt spray tests coatings with an average thickness of 10μm had an anticorrosive performance of over 1000 hours. Fatigue tests revealed that anodizing onto AZ91D magnesium alloy does not affect the fatigue strength. these results demonstrate the utility of this anodizing t reatment on magnesium alloy for application as a structural material, such as in the automotive field.

关键词： magnesium alloy anodizing environmental friendliness

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ELECtROPLAtED Zn-Ni-SiO_(2) COMPOSItE COAtINGS tREAtED WItH A SILANE COUPLING AGENt tO REPLACE CHROMAtING

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Acta Metallurgica Sinica(English Letters) 2005年第3期18卷 416-422页

作者： M.hino M.Hiramatsu K.Murakami A.Saijo t.Kanadani Industrial technology Research Institute of Okayama Prefecture HagaOkayama-sh iOkayama 701-1296Japan Hori Metal Finishing Industry Co. Ltd.AbeOchiai-choTakahashi-shiOkayama 716-0061Japan Graduate School of Okayama University of Science Ridai-choOkayama-shiOkayam a 700-0005Japan

the fixing of a silane coupling agent to Zn-Ni-silica(SiO_(2))composite coatings was studied for the purpose of developing a coating process as an alternative to *** corrosion resistance of Zn-Ni-silica composite coatings was rem arkably improved by the silica nanoparticles in the composite,which were disper sed in the surface of this *** silane coupling agent formed chemical bonds with the inorganic silica particles during the silane coupling treatment on the se composite *** treatment suppressed the formation of white corrosion products to the same extent as chromating,as measured in salt spray *** is concluded that treating Zn-Ni-silica composite coatings with silane coupling agents is a viable alternative technique to chromating.

关键词： electrodeposition Zn-Ni-SiO_(2)composite coating silane coupling reatment chrome-free environmental friendlines

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Automated stopping criterion for spectral measurements with active learning

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npj Computational Materials 2021年第1期7卷 1252-1260页

作者： tetsuro Ueno Hideaki Ishibashi Hideitsu hino Kanta Ono Synchrotron Radiation Research Center Kansai Photon Science InstituteQuantum Beam Science Research DirectorateNational Institutes for Quantum and Radiological Science and TechnologySayoHyogoJapan Department of Human Intelligence Systems Graduate School of Life Science and Systems EngineeringKyushu Institute of TechnologyKitakyushuFukuokaJapan the Institute of Statistical Mathematics Research Organization of Information and SystemsTachikawaTokyoJapan Department of Applied Physics Graduate School of EngineeringOsaka UniversitySuitaOsakaJapan Center for Integrative Quantum Beam Science Institute of Materials Structure ScienceHigh Energy Accelerator Research OrganizationTsukubaIbarakiJapan

the automated stopping of a spectral measurement with active learning is *** optimal stopping of the measurement is realised with a stopping criterion based on the upper bound of the posterior average of the generalisation error of the Gaussian process *** is revealed that the automated stopping criterion of the spectral measurement gives an approximated X-ray absorption spectrum with sufficient accuracy and reduced data *** proposed method is not only a proof-of-concept of the optimal stopping problem in active learning but also the key to enhancing the efficiency of spectral measurements for highthroughput experiments in the era of materials informatics.

关键词： criterion spectral optimal

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Effect of pore water chemistry on anisotropic behavior of clayey soil and possible application in underground construction

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Underground Space 2016年第2期1卷 114-123页

作者： Jinchun Chai takehito Negami Kosuke Aiga takenori hino Graduate School of Science and Engineering Saga University1 HonjyoSaga 840-8502Japan Institute of Lowland and Marine Research Saga University1 HonjyoSaga 840-8502Japan

the effect of pore water chemistry on anisotropic behavior of consolidation and shear strength of reconstituted Ariake clay has been investigated *** types of chemicals added into the pore water of the soil for enhancing flocculation microstructure of soil particles are sodium chloride(salt)(NaCl),and calcium chloride(CaCl_(2));and two dispersants added are sodium triphosphate(Na_(5)-P_(3)O_(10))and sodium hexametaphosphate(Na_(6)P_(6)O_(18)),*** concentrations of these chemicals in pore water were 2-3%.Degrees of anisotropy of the coefficient of consolidation and undrained shear strength decreased with adding NaCl and CaCl_(2),but increased with adding the *** of anisotropy also increased with one-dimensional(1D)deformation and the samples with dispersive additives had higher increase *** has been confirmed qualitatively by scanning electron microscopy(SEM)images that adding dispersive chemicals promoted the formation of dispersive microstructure and increased the degree of anisotropy,and the chemicals enhancing flocculent microstructure had an inverse *** possible application of the findings to underground construction has been discussed also.

关键词： Anisotropy Pore water chemistry Clay Consolidation Shear strength SEM image Underground construction

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Adaptive design of an X-ray magnetic circular dichroism spectroscopy experiment with Gaussian process modelling

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npj Computational Materials 2018年第1期4卷 639-646页

作者： tetsuro Ueno Hideitsu hino Ai Hashimoto Yasuo takeichi Masahiro Sawada Kanta Ono Quantum Beam Science Research Directorate National Institutes for Quantum and Radiological Science and Technology1-1-1 KotoSayoHyogo 679-5148Japan Institute of Materials Structure Science High Energy Accelerator Research Organization1-1 OhoTsukubaIbaraki 305-0801Japan Elements Strategy Initiative Center for Magnetic Materials Research Center for Magnetic and Spintronic MaterialsNational Institute for Materials Science1-2-1 SengenTsukubaIbaraki 305-0047Japan Department of Computer Science University of Tsukuba1-1-1 TennodaiTsukubaIbaraki 305-8573Japan Hiroshima Synchrotron Radiation Center Hiroshima University2-313 KagamiyamaHigashihiroshimaHiroshima 739-0046Japan Center for Materials Research by Information Integration(CMI2) Research and Services Division of Materials Data and Integrated System(MaDIS)National Institute for Materials Science(NIMS)1-2-1 SengenTsukubaIbaraki 305-0047Japan

Spectroscopy is a widely used experimental technique,and enhancing its efficiency can have a strong impact on materials *** propose an adaptive design for spectroscopy experiments that uses a machine learning technique to improve *** examined X-ray magnetic circular dichroism(XMCD)spectroscopy for the applicability of a machine learning technique to *** XMCD spectrum was predicted by Gaussian process modelling with learning of an experimental spectrum using a limited number of observed data *** sampling of data points with maximum variance of the predicted spectrum successfully reduced the total data points for the evaluation of magnetic moments while providing the required *** present method reduces the time and cost for XMCD spectroscopy and has potential applicability to various spectroscopies.

关键词： spectroscopy circular spectroscopy

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Effects of thermal treatments on Helium Retention and thermal Desorption Behaviors in a V-4ti Aalloy

Southwestern Institute of Physics Annual Report

引用

Southwestern Institute of Physics Annual Report 2004年第1期 102-105页

作者： LIU Xiang t. Yamada t. hino Hokkaido University Japan 不详

Vanadium alloys are considered as the promising first wall and structure materials of the future fusion reactors owing to their perfect low neutron-induced radioactivity and good high temperature performance. Helium retention and thermal desorption behaviors are key issues for the applications of vanadium alloys in fusion reactors since helium can be produced by helium discharge cleaning and neutron transmutation. A. van Veen groupt investigated helium trapping and thermal desorption mechanisms in vanadium alloys by using 1 keV helium ion irradiation to the fluence of 10^13～10^14He/cm^2, and the influenee of pre-annealing treatments on helium trapping. two group of peaks were found at the thermal helium desorption spectrum. they thought one was due to helium-vacancyimpurity clusters and the other was corresponding to helium trapping into pre-existing traps, such as fine-size precipitates.

关键词： Vanadium alloy tDS thermal treatment

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