研究者詳細

顔写真

ワン　ズハオ
王　子豪
Zihao Wang
所属
大学院工学研究科　附属先端材料強度科学研究センター　先進機械材料科学研究部門
職名
准教授
学位

  • 工学博士 （東北大学）

e-Rad 研究者番号
70893519

経歴 3

  • 2025年 ～ 継続中
    東北大学　先端材料強度科学研究センター　准教授

  • 2022年 ～ 2025年
    オクスフォード大学　シニアフェロー

  • 2020年 ～ 2022年
    東北大学未来技術科学研究センター　助教

所属学協会 3

  • 日本金属学会

    2026年4月 ～ 継続中

  • 腐食防食学会

    2025年6月 ～ 継続中

  • International Cooperative Group on Environmentally-Assisted Cracking

    2018年3月 ～ 継続中

研究キーワード 5

  • エネルギー材料

  • 材料工学

  • 電子顕微鏡

  • 経年劣化

  • 水素

研究分野 1

  • ナノテク・材料 / 構造材料、機能材料 /

受賞 4

  1. Junior Research Fellow

    2023年10月　Kellogg College, University of Oxford

  2. Horizon Europe talent program Marie Curie Fellowship

    2022年11月　European Commission

  3. Fujino Incentive Award

    2018年9月　Tohoku University

  4. President Fellowship

    2017年　Tohoku University

論文 25

  1. Insights into stress corrosion cracking from recent studies on grain boundary structure and hydrogen effects for material life extension 査読有り

    Qian Chen, Jing Nong, Tetsuo Shoji, Zihao Wang

    The Innovation Materials　100214-100214　2026年

    出版者・発行元： Innovation Press Co., Limited

    DOI： 10.59717/j.xinn-mater.2026.100214 　

    ISSN：2959-8737

  2. Diffusible hydrogen facilitated stress corrosion cracking in 316 stainless steel using in-situ gaseous hydrogen charging in simulated PWR environment

    Zihao Wang, Houzhi Liu, Yutaka Watanabe, Tetsuo Shoji, Xiangyu Zhong, Zhengcao Li, Sergio Lozano-Perez

    Scripta Materialia　255　116390-116390　2025年1月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.scriptamat.2024.116390 　

    ISSN：1359-6462

  3. Impact of diffusible hydrogen on corrosion of Alloy 600 at 288 °C: An in-situ electrochemical study

    Zihao Wang, Sergio Lozano-Perez, Yutaka Watanabe, Yoichi Takeda, Xiangyu Zhong, Zhengcao Li, Tetsuo Shoji

    Corrosion Science　234　112150-112150　2024年7月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.corsci.2024.112150 　

    ISSN：0010-938X

  4. Quantitatively evaluating the contribution of intergranular carbides, Cr-depleted zone, and grain boundary to intergranular stress corrosion cracking of Alloy 600 in a simulated boiling water reactors environment with high oxygen concentrations

    Pan Liu, Yunlong Wu, Xiangyu Zhong, Zihao Wang, Ken Oyama, Seiya Ogota, Yutaka Watanabe, Tetsuo Shoji

    Acta Materialia　269　119794-119794　2024年5月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.actamat.2024.119794 　

    ISSN：1359-6454

  5. Role of Hydrogen in Metal Oxidation—Implication to Irradiation Enhanced Corrosion of Ni-Based Alloys and Stainless Steels in High Temperature Water

    Zihao Wang, Tetsuo Shoji

    Corrosion and Materials Degradation　3　(2)　281-302　2022年6月19日

    出版者・発行元： {MDPI} {AG}

    DOI： 10.3390/cmd3020017 　

    ISSN：2624-5558

    詳細を見る 詳細を閉じる

    <jats:p>Hydrogen plays various roles in metals or at metal–environment interfaces. Well known effects on metals are hydrogen embrittlement, hydrogen enhanced local plasticity, hydrogen enhanced strain-induced vacancy, hydrogen accelerated oxidation, hydrogen-induced creep, and their synergy. In this study, the potential roles of hydrogen in materials degradation are demonstrated and studied by two different tests. One is the high temperature oxidation of Ni-based alloy in various environments with hydrogen penetration, and the other is the effects of neutron flux/fluence on the oxidation kinetics and SCC of 316L and 316LN stainless steels, regarding a possible role of transmuted H from N. The results emphasize that the hydrogen either permeated into metals from surrounding environments, such as high temperature water or gaseous hydrogen, or generated in metals by nuclei transmutation, such as hydrogen transmuted from N atoms in metals, which can promote metal oxidation through multiple mechanisms. Apparently, the oxidation/corrosion phenomenon is a synergy of sub-mechanisms. For instance, dissolved hydrogen (DH) is usually believed to slow down the corrosion process for lowering the open circuit potential (OCP). However, H also facilitates the transport of the cations in oxide, thereby accelerating the corrosion process. In this bi-mechanism system, two different, contradictory mechanisms work and exist simultaneously. Therefore, whether the metallic materials are benefited or degraded by the H during its oxidation process depends on which sub-mechanism is dominant. Namely, hydrogen can play the role an oxidant in the metal and metal/oxide interface to pre-oxidize metal elements, such as Cr, Ni, and Fe, and possibly promote inward oxygen diffusion and the oxidation rate at the interface. Moreover, hydrogen may play a role as a reductant in oxides where existing oxides can be reduced. Then, the protective capability of oxides will be decreased to result in corrosion acceleration at the metal–oxide interface. These phenomena were observed in Ni-based alloy and possibly austenitic stainless steel containing N such as 316LN SS. This work demonstrates a part of the role of hydrogen on oxidation, and more extensive and systematic work is needed to delineate the role of hydrogen on oxidation with and without irradiation.</jats:p>

  6. Roles of permeated hydrogen in the oxidation process of Ni-based alloy in high temperature water environment

    Zihao Wang, Yoichi Takeda

    Corrosion Science　179　109139-109139　2021年2月

    出版者・発行元： Elsevier {BV}

    DOI： 10.1016/j.corsci.2020.109139 　

    ISSN：0010-938X

  7. Mechanistic Understanding of the Dissolution Behavior of the Precipitates in 12Cr Martensitic Steel during Potentiodynamic Polarization in Strong Alkaline Solutions

    Zihao Wang, Yoichi Takeda, Xiangyu Zhong, Tetsuo Shoji, Jian Xu, Yasuaki Watanabe, Mitsuo Yamashita, Sakae Izumi

    Journal of The Electrochemical Society　167　(14)　141501-141501　2020年11月1日

    出版者・発行元： The Electrochemical Society

    DOI： 10.1149/1945-7111/abc30c 　

    ISSN：0013-4651 1945-7111

  8. Mechanistic understanding of the roles of hydrogen in modification of oxide film of alloy 600 in high temperature high pressure water environment 査読有り

    Zihao Wang, Yoichi Takeda

    CORROSION SCIENCE　170　108656-108656　2020年7月

    DOI： 10.1016/j.corsci.2020.108656 　

    ISSN：0010-938X

    eISSN：1879-0496

  9. Amorphization and structural modification of the oxide film of Ni-based alloy by in-situ H charging in high temperature high pressure water environment 査読有り

    Zihao Wang, Yoichi Takeda

    CORROSION SCIENCE　166　108474-108474　2020年4月

    DOI： 10.1016/j.corsci.2020.108474 　

    ISSN：0010-938X

    eISSN：1879-0496

  10. Aging Degradation Characteristics and Long-Term Performance of Structural Materials for Energy Conversion Systems 査読有り

    Xiangyu Zhong, Zihao Wang, Fethi Hamdani, Jian Xu, Nishith Kumar Das, Yoichi Takeda, Tetsuo Shoji

    CORROSION　75　(3)　254-266　2019年3月

    DOI： 10.5006/2925 　

    ISSN：0010-9312

    eISSN：1938-159X

  11. Hydrogen assisted oxidation behavior of alloy 600 in high temperature air environment by in-situ H charging method

    Zihao Wang, Yoichi Takeda

    19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, EnvDeg 2019　1304-1310　2019年

    出版者・発行元： American Nuclear Society

  12. Microstructure and pitting behavior of the dissimilar metal weld of 309L cladding and low alloy steel A533B 査読有り

    Zihao Wang, Jian Xu, Tetsuo Shoji, Yoichi Takeda, Hideki Yuya, Masataka Ooyama

    JOURNAL OF NUCLEAR MATERIALS　508　1-11　2018年9月

    DOI： 10.1016/j.jnucmat.2018.05.011 　

    ISSN：0022-3115

    eISSN：1873-4820

  13. An electrochemical method for detection and quantification of Laves phase in 12Cr martensitic stainless steel 査読有り

    Zihao Wang, Jian Xu, Yoichi Takeda, Tetsuo Shoji, Yasuaki Watanabe, Mitsuo Yamashita, Sakae Izumi

    CORROSION SCIENCE　135　215-221　2018年5月

    DOI： 10.1016/j.corsci.2018.02.049 　

    ISSN：0010-938X

    eISSN：1879-0496

  14. The synergy of corrosion and fretting wear process on Inconel 690 in the high temperature high pressure water environment 査読有り

    Zihao Wang, Jian Xu, Jie Li, Long Xin, Yonghao Lu, Tetsuo Shoji, Yoichi Takeda, Yuichi Otsuka, Yoshiharu Mutoh

    JOURNAL OF NUCLEAR MATERIALS　502　255-262　2018年4月

    DOI： 10.1016/j.jnucmat.2018.02.021 　

    ISSN：0022-3115

    eISSN：1873-4820

  15. The degradation mechanism of Inconel 690TT induced by fretting wear in air

    J. Li, B.B.Yang, Y.H. Lu, L. Xin, Z.H. Wang, T. Shoji

    Tribology International　116　147-154　2017年12月

    出版者・発行元： Elsevier {BV}

    DOI： 10.1016/j.triboint.2017.07.003 　

    ISSN：0301-679X

  16. The role of frequency on fretting corrosion of Alloy 690TT against 304 stainless steel in high temperature high pressure water

    L. Xin, Y.H. Lu, Y. Otsuka, Y. Mutoh, Z.H. Wang, T. Shoji

    Materials Characterization　134　260-273　2017年12月

    出版者・発行元： Elsevier {BV}

    DOI： 10.1016/j.matchar.2017.10.032 　

    ISSN：1044-5803

  17. Fretting Wear Behavior and Mechanism of Inconel 690 Alloy Related to the Displacement Amplitude

    L. Xin, Z. H. Wang, J. Li, Y. H. Lu, T. Shoji

    Tribology Transactions　60　(5)　913-922　2017年9月3日

    出版者・発行元： Informa {UK} Limited

    DOI： 10.1080/10402004.2016.1230686 　

    ISSN：1040-2004 1547-397X

  18. The effect of normal force on fretting corrosion behavior of Inconel 690 in 3.5% sodium chloride 査読有り

    Jie Li, Beibei Yang, Yonghao Lu, Long Xin, Zihao Wang, Tetsuo Shoji

    MATERIALS CHARACTERIZATION　131　224-233　2017年9月

    DOI： 10.1016/j.matchar.2017.04.015 　

    ISSN：1044-5803

    eISSN：1873-4189

  19. Effects of hydrogen on corrosion of pure Ni in high temperature water 査読有り

    Jian Xu, Zihao Wang, Tetsuo Shoji

    CORROSION SCIENCE　122　123-129　2017年7月

    DOI： 10.1016/j.corsci.2017.04.003 　

    ISSN：0010-938X

    eISSN：1879-0496

  20. The effects of electrochemical polarization condition and applied potential on tribocorrosion behaviors of Inconel 690 alloys in water environment

    J. Li, B.B. Yang, Y.H. Lu, L. Xin, Z.H. Wang, T. Shoji

    Materials & Design　119　93-103　2017年4月

    出版者・発行元： Elsevier {BV}

    DOI： 10.1016/j.matdes.2017.01.032 　

    ISSN：0264-1275

  21. Effect of normal force on fretting wear behavior and mechanism of Alloy 690TT in high temperature water

    L. Xin, B.B. Yang, Z.H. Wang, J. Li, Y.H. Lu, T. Shoji

    Wear　368-369　210-218　2016年12月

    出版者・発行元： Elsevier {BV}

    DOI： 10.1016/j.wear.2016.09.018 　

    ISSN：0043-1648

  22. Microstructural evolution of subsurface on Inconel 690TT alloy subjected to fretting wear at elevated temperature

    L. Xin, B.B. Yang, Z.H. Wang, J. Li, Y.H. Lu, T. Shoji

    Materials & Design　104　152-161　2016年8月

    出版者・発行元： Elsevier {BV}

    DOI： 10.1016/j.matdes.2016.05.030 　

    ISSN：0264-1275

  23. Microstructural characterization of subsurface caused by fretting wear of Inconel 690TT alloy 査読有り

    Long Xin, ZiHao Wang, Jie Li, Yonghao Lu, Tetsuo Shoji

    MATERIALS CHARACTERIZATION　115　32-38　2016年5月

    DOI： 10.1016/j.matchar.2016.03.010 　

    ISSN：1044-5803

    eISSN：1873-4189

  24. Effect of pH value on the fretting wear behavior of Inconel 690 alloy

    Z.H. Wang, Y.H. Lu, J. Li, T. Shoji

    Tribology International　95　162-169　2016年3月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.triboint.2015.10.025 　

    ISSN：0301-679X

  25. Effect of Cold Rolling on the Fretting Wear Behavior and Mechanism in Inconel 600 Alloy 査読有り

    Zihao Wang, Yonghao Lu, Haoyang Zhang, Tetsuo Shoji

    TRIBOLOGY TRANSACTIONS　59　(5)　923-931　2016年

    DOI： 10.1080/10402004.2015.1121312 　

    ISSN：1040-2004

    eISSN：1547-397X

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講演・口頭発表等 7

  1. 高温環境下における構造材料の水素誘起劣化の役割 招待有り

    Zihao Wang

    The 9th Symposium for the Core Research Clusters for Materials Science and Spintronics and the 8th Symposium on International Joint Graduate Programs in Materials Science and Spintronics

  2. 高温高圧水環境で使用される316Lステンレス鋼のき裂先端の解析 招待有り

    Zihao Wang

    International Symposium on Materials Service Safety 2025 (ISMSS)

  3. 12Crステンレス鋼中のラーベス相の検出および定量化のための電気化学的方法 招待有り

    Zihao Wang

    2025 International Conference on Green Metallurgy and Advanced Key Materials Processing

  4. 高温水中におけるその場水素チャージ下での316Lの応力腐食割れ挙動

    Zihao Wang

    Annual Meeting 2024, ICG-EAC

  5. Role of H permeation on surface oxidation of Ni-based alloy in high-temperature water environment 招待有り

  6. An interesting observation on how diffusible hydrogen affects the corrosion potential

    Zihao Wang

    Annual Meeting 2023, ICG-EAC

  7. Stress corrosion cracking behaviour of 316L with in-situ hydrogen charging in high temperature water

    Zihao Wang

    Annual Meeting 2021, ICG-EAC

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共同研究・競争的資金等の研究課題 7

  1. Breaking boundaries in high-temperature tribology through in situ hydrogen penetration

    王 子豪

    2026年6月26日 ～ 2028年3月31日

  2. Chunhui Collaboration Research Scheme

    WANG ZIHAO, LV SHASHA

    提供機関：Ministry of Education of China

    研究機関：Tohoku university and Beijing Normal University

    2023年5月 ～ 2025年5月

  3. Breaking frontiers in SCC of nickel-based alloys from the perspective of diffusible hydrogen via multi-scale in-situ characterization

    WANG ZIHAO

    提供機関：European commission

    制度名：Marie Skłodowska-Curie Actions (MSCA)

    研究機関：University of Oxford

    2022年11月 ～ 2024年11月

  4. Stress corrosion cracking (SCC) sensitivity evaluation in shroud welds

    提供機関：Tohoku Electric Power Co., Inc.

    研究機関：Tohoku university

    2021年4月 ～ 2024年3月

  5. Undergraduate internship supervision

    WANG ZIHAO

    提供機関：Henry Royce Institute, UK

    制度名：Royce Undergraduate Research Internship Scheme

    研究機関：University of Oxford

    2023年7月 ～ 2023年9月

  6. Corrosion of structural materials in reactor pressure vessel

    提供機関：Tohoku Electric Power Co., Inc.

    研究機関：Tohoku university

    2020年4月 ～ 2022年3月

  7. 固相界面反応に基づく水素加速酸化過程の解明

    WANG ZIHAO

    2019年4月25日 ～ 2021年3月31日

    詳細を見る 詳細を閉じる

    This year I have finished the supplymentary works of the oxidation of Inconel 600 with H permeation in high temperature water environment. It was proved that the H plays various roles in the oxidation process and one paper has been published based on the above results. DFT simulation was also considered into the research for theoretical understanding of the H-oxidation interaction process. The practical significance of this study is to provide an image that the H not only detrimental but also can be benifitial to the nuclear industry. However, the comprehensive effect depends on which process is the control step, which plays the major role. Meanwhile, the testing method, oxidation under in situ H permeation condition in high temperature water, can be applied to other fields, such as the battery development. Our results shows that the testing system is very stable and reliable. It now has been adopted to several groups to perform the similar test but for other purpose. At present, besides the paper which has been accepted, there are also two more papers was under construction. Possibly these papers can be submitted within three months. And one conference paper was under preparation and will be submitted to ICGEAC.

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