Details of the Researcher

PHOTO

Zihao Wang
Section
Graduate School of Engineering
Job title
Associate Professor
Degree
  • PhD (Tohoku University)

e-Rad No.
70893519

Research History 3

  • 2025 - Present
    Tohoku University

  • 2022 - 2025
    オクスフォード大学 シニアフェロー

  • 2020 - 2022
    Tohoku University

Professional Memberships 3

  • 日本金属学会

    2026/04 - Present

  • Japan Society of Corrosion Engineering

    2025/06 - Present

  • International Cooperative Group on Environmentally-Assisted Cracking

    2018/03 - Present

Research Interests 5

  • エネルギー材料

  • 材料工学

  • 電子顕微鏡

  • 経年劣化

  • 水素

Research Areas 1

  • Nanotechnology/Materials / Structural and functional materials /

Awards 4

  1. Junior Research Fellow

    2023/10 Kellogg College, University of Oxford

  2. Horizon Europe talent program Marie Curie Fellowship

    2022/11 European Commission

  3. Fujino Incentive Award

    2018/09 Tohoku University

  4. President Fellowship

    2017 Tohoku University

Papers 25

  1. Insights into stress corrosion cracking from recent studies on grain boundary structure and hydrogen effects for material life extension Peer-reviewed

    Qian Chen, Jing Nong, Tetsuo Shoji, Zihao Wang

    The Innovation Materials 100214-100214 2026

    Publisher: 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 2025/01

    Publisher: 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 2024/07

    Publisher: 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 2024/05

    Publisher: 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 2022/06/19

    Publisher: {MDPI} {AG}

    DOI: 10.3390/cmd3020017  

    ISSN: 2624-5558

    More details Close

    <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 2021/02

    Publisher: 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 2020/11/01

    Publisher: 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 Peer-reviewed

    Zihao Wang, Yoichi Takeda

    CORROSION SCIENCE 170 108656-108656 2020/07

    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 Peer-reviewed

    Zihao Wang, Yoichi Takeda

    CORROSION SCIENCE 166 108474-108474 2020/04

    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 Peer-reviewed

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

    CORROSION 75 (3) 254-266 2019/03

    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

    Publisher: American Nuclear Society

  12. Microstructure and pitting behavior of the dissimilar metal weld of 309L cladding and low alloy steel A533B Peer-reviewed

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

    JOURNAL OF NUCLEAR MATERIALS 508 1-11 2018/09

    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 Peer-reviewed

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

    CORROSION SCIENCE 135 215-221 2018/05

    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 Peer-reviewed

    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 2018/04

    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 2017/12

    Publisher: 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 2017/12

    Publisher: 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 2017/09/03

    Publisher: 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 Peer-reviewed

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

    MATERIALS CHARACTERIZATION 131 224-233 2017/09

    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 Peer-reviewed

    Jian Xu, Zihao Wang, Tetsuo Shoji

    CORROSION SCIENCE 122 123-129 2017/07

    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 2017/04

    Publisher: 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 2016/12

    Publisher: 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 2016/08

    Publisher: 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 Peer-reviewed

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

    MATERIALS CHARACTERIZATION 115 32-38 2016/05

    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 2016/03

    Publisher: 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 Peer-reviewed

    Zihao Wang, Yonghao Lu, Haoyang Zhang, Tetsuo Shoji

    TRIBOLOGY TRANSACTIONS 59 (5) 923-931 2016

    DOI: 10.1080/10402004.2015.1121312  

    ISSN: 1040-2004

    eISSN: 1547-397X

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Presentations 7

  1. Hydrogen induced degradation of structural materials at high temperature Invited

    Zihao Wang

  2. Advanced characterization of the crack tip of 316L stainless steel used in high temperature high pressure water Invited

    Zihao Wang

  3. An electrochemical method for detection and quantification of Laves Phase in 12Cr Stainless steel Invited

    Zihao Wang

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

    Zihao Wang

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

  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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Research Projects 7

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

    王 子豪

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 挑戦的研究(萌芽)

    Institution: 東北大学

    2026/06/26 - 2028/03/31

  2. Chunhui Collaboration Research Scheme

    WANG ZIHAO, LV SHASHA

    Offer Organization: Ministry of Education of China

    Institution: Tohoku university and Beijing Normal University

    2023/05 - 2025/05

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

    WANG ZIHAO

    Offer Organization: European commission

    System: Marie Skłodowska-Curie Actions (MSCA)

    Institution: University of Oxford

    2022/11 - 2024/11

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

    Offer Organization: Tohoku Electric Power Co., Inc.

    Institution: Tohoku university

    2021/04 - 2024/03

  5. Undergraduate internship supervision

    WANG ZIHAO

    Offer Organization: Henry Royce Institute, UK

    System: Royce Undergraduate Research Internship Scheme

    Institution: University of Oxford

    2023/07 - 2023/09

  6. Corrosion of structural materials in reactor pressure vessel

    Offer Organization: Tohoku Electric Power Co., Inc.

    Institution: Tohoku university

    2020/04 - 2022/03

  7. 固相界面反応に基づく水素加速酸化過程の解明

    WANG ZIHAO

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2019/04/25 - 2021/03/31

    More details Close

    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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