閻 紀旺 (ヤン ジワン)

Yan, Jiwang

写真a

所属(所属キャンパス)

理工学部 機械工学科 (矢上)

職名

教授

HP

外部リンク

総合紹介 【 表示 / 非表示

  • 高付加価値型ものづくりを実現するための、マイクロ・ナノ領域での材料除去・変形および物性制御に基づく高精度・高効率・省エネ・省資源の加工技術の研究開発に取り組んでいる。特に超精密機械加工、マイクロ・ナノ構造形成、レーザ加工・欠陥修復などを中心に新技術の提案ならびにその原理の解明を進めている。

経歴 【 表示 / 非表示

  • 2000年04月
    -
    2001年09月

    東北大学工学研究科助手

  • 2001年10月
    -
    2005年03月

    北見工業大学助教授

  • 2005年04月
    -
    2007年03月

    東北大学工学研究科助教授

  • 2007年04月
    -
    2012年03月

    東北大学工学研究科准教授

  • 2008年02月
    -
    2008年04月

    シドニー大学日本学術振興会特定国派遣研究者

全件表示 >>

学歴 【 表示 / 非表示

  • 1991年07月

    吉林大学, 工学部, 機械工学科

    大学, 卒業

  • 1994年03月

    吉林大学, 工学研究科, 機械工学専攻

    大学院, 修了, 修士

  • 1996年01月

    清華大学, 工学研究科, 精密機械学専攻

    大学院, 退学, 博士

  • 2000年03月

    東北大学, 工学研究科, 機械電子工学専攻

    大学院, 修了, 博士

学位 【 表示 / 非表示

  • 博士(工学), 東北大学, 課程, 2000年03月

 

研究分野 【 表示 / 非表示

  • ものづくり技術(機械・電気電子・化学工学) / 加工学、生産工学 (精密工学・機械加工学)

  • ナノテク・材料 / 材料加工、組織制御 (材料加工・処理)

  • ナノテク・材料 / ナノマイクロシステム (マイクロ・ナノデバイス)

  • ナノテク・材料 / 複合材料、界面 (応用物性・結晶工学)

研究キーワード 【 表示 / 非表示

  • 超精密加工

  • マイクロ・ナノ加工

  • レーザプロセッシング

  • 電気加工

  • ナノメカニクス

 

著書 【 表示 / 非表示

  • Advanced Ceramic Coatings: Fundamentals, Manufacturing, and Classification, R. K. Gupta, A. Motallebzadeh, S. Kakooei, T. A. Nguyen, A. Behera (eds.)

    P. J. Liew, J. Yan, C. Y. Yap, Elsevier B. V., 2023年06月

    担当範囲: Chapter 19: Electrical discharge coating with quarry dust powder suspension,  担当ページ: 433-460

  • Multidisciplinary Science in Micro/Nanoscale Manufacturing

    J. Yan (Guest editor), Elsevier B.V., 2020年12月

    担当範囲: International Journal of Machine Tools and Manufacture, Volume 159 (Special Issue)

  • Micro and nanoscale laser processing of hard brittle materials

    J. Yan and N. Takayama, Elsevier B.V., 2019年11月,  ページ数: 242

    担当範囲: 1-242

  • リチウムイオン二次電池用シリコン系負極材の開発動向

    閻 紀旺, シーエムシー出版, 2019年11月,  ページ数: 251

    担当範囲: 第3章 レーザ照射による廃シリコン粉末からのマイクロピラー形成とその負極特性, 20-33

  • Micro and Nano Fabrication Technology

    J. Yan (ed.), Springer Nature Singapore Pte Ltd., 2018年05月

    担当範囲: 1-959

全件表示 >>

論文 【 表示 / 非表示

  • Investigation of failure modes and material structural responses of nanographite coatings on single-crystal silicon by nanoscratching

    Brüssel F., Huang W., Yan J.

    Tribology International (Tribology International)  193 2024年05月

    ISSN  0301679X

     概要を見る

    The failure modes of a nanographite-on-silicon system and the effects of the coating on the load-induced phase transformation of the silicon substrate were investigated using a series of nanoscratching tests with a spherical diamond indenter. The critical normal load for the failure of the nanographite coating was determined based on the thickness of the coating. When the load increased beyond the critical point, cracks, press spallation, and lift spallation were observed, and the silicon substrate underwent a phase transformation from the original crystalline phase to a mixture of amorphous, Si-III and Si-XII phases. For a thin coating, the silicon substrate was free of phase transformation owing to the coating protection. These findings provide guidance for glass molding and other applications.

  • Simultaneous flattening and hardening of laser shock peened Zr-based metallic glass surface by nanosecond laser irradiation in a flowing nitrogen atmosphere

    Qian Y., Liu B., Hong J., Jiang M., Zhang Z., Zhang L., Huang H., Yan J.

    Journal of Materials Processing Technology (Journal of Materials Processing Technology)  326 2024年05月

    ISSN  09240136

     概要を見る

    Laser shock peening (LSP) is an ideal surface modification technique which has been extensively applied to improve the room-temperature plasticity of metallic glasses (MGs) by generating extra-deep compressive residual stress region and increasing the free volume content. Nevertheless, after LSP treatment, the surface quality and hardness of MGs are usually impaired simultaneously, which hinders their applications as structural and functional materials. In the current study, an attempt was made to achieve simultaneous flattening and hardening of LSP treated (LSPed) Zr-based MG by nanosecond laser irradiation in a flowing nitrogen atmosphere. The effects of laser power level on the macro- and micro-morphology, chemical composition, surface hardness, and surface roughness (Sa) of the laser-irradiated LSPed MG were comprehensively investigated. It was found that the minor surface defects of the LSPed MGs could be effectively reduced by nanosecond laser irradiation under appropriate laser irradiation parameters, and accordingly, the surface quality was improved (with a maximum reduction in surface roughness (Sa) by 86.3%). Furthermore, the nanoindentation test results indicated that nanosecond laser irradiation at a relatively high laser power of 15.6 W resulted in an impressive improvement (173.9%) in surface hardness of the LSPed MG, which could be attributed to the introduction of hard nitrided phases mainly consisting of Zr3N4. This study provides an insightful understanding of the microstructure changes and surface characteristics of the LSPed MGs after nanosecond laser irradiation in a flowing nitrogen atmosphere, which paves the way for improving the applicability of MGs as structural and functional materials.

  • Effect of dopant concentration on femtosecond pulsed laser irradiation of yttria-stabilized zirconia for generating nanopores

    Yamamuro Y., Shimoyama T., Nagata H., Yan J.

    Journal of Alloys and Compounds (Journal of Alloys and Compounds)  980 2024年04月

    ISSN  09258388

     概要を見る

    Yttria-stabilized zirconia (YSZ) is a fine ceramics material that has been applied to dental implants and mechanical components. As YSZ is a hard, brittle, and chemically stable material, that undergoes phase transformation during mechanical loading, it is difficult to fabricate nanostructures using mechanical processing methods. In this study, a surface structuring method using a femtosecond pulsed laser was proposed, which is effective in suppressing the mechanical loading-induced phase transformation. As the material properties of YSZ vary with the concentration of yttria dopant, polycrystalline zirconia samples with different yttria concentrations (2, 3, 5, and 8 mol%) were used to investigate the effect of yttria concentrations on laser processing characteristics for nanostructuring. At all concentrations, nanopore generation in the surface grain was achieved by laser irradiation near the ablation threshold. In addition, there was no significant change in the crystal structure before and after laser irradiation, and no damage to the bulk occurred. At 2 mol%, intergranular cracks were generated around the pores. By increasing the dopant level to 5 mol%, the lens effect of the crystal grains became stronger due to enhanced grain growth, and the diameter and number of pores increased. In addition, pores formed preferentially on smaller grains at 5 mol%. However, for YSZ with 8 mol%, the pore formation phenomenon was different from that in the lower dopant level, as the area near the grain boundary was preferentially ablated, and microcracks formation and exfoliation of the surface also occurred. These results contribute to a deeper understanding of the laser ablation characteristics of zirconia with different dopant levels and to the development of surface structuring methods for fine ceramics materials.

  • On the surface characteristics and removability of RB-SiC composite processed by nanosecond pulsed laser

    An H., Qian Y., Zhang L., Zhang Z., Huang H., Yan J.

    Composites Part A: Applied Science and Manufacturing (Composites Part A: Applied Science and Manufacturing)  180 2024年02月

    ISSN  1359835X

     概要を見る

    The inherent hard-brittle nature of RB-SiC composite poses significant challenges for efficient machining, hindering its application and promotion. Laser processing is a non-contact treatment technique that can effectively modify the mechanical properties of the material surface, thereby altering its removability. Accordingly, the change in surface characteristics of RB-SiC composite induced by nanosecond laser irradiation was investigated. It was found that laser irradiation could effectively soften the RB-SiC composite (with a maximum reduction in hardness by 40.7%), and the softening degree was strongly dependent on the laser parameters. The chemical composition analysis showed that the SiC content was decreased while the Si content was increased after laser irradiation, which was mainly responsible for the hardness reduction of RB-SiC composite. In addition, compared to the original RB-SiC composite, the laser-irradiated samples exhibited enhanced weight loss during the polishing process. This work gives a feasible route to improve the removability of RB-SiC composite.

  • Controlled vibration amplitude in ultrasonic assisted grinding using FRF guided cutting frequency

    Mansour M.M., El-Hofy H., Yan J., Maher I., Nassef M.G.A., Khaireldien W.M.

    International Journal of Machining and Machinability of Materials (International Journal of Machining and Machinability of Materials)  25 ( 3-4 ) 408 - 431 2024年01月

    ISSN  17485711

     概要を見る

    In ultrasonic-assisted machining, vibration amplitudes can be controlled at the resonant frequency by altering the ultrasonic power. However, the availability of amplitude controlled ultrasonic power is constrained to limited types of machine tools. The present study introduces a novel idea for generating identified vibration amplitudes for a diamond-grinding tool by adjusting the ultrasonic frequency in the range from 20 kHz to 30 kHz. For this purpose, experimental model analysis (EMA) is carried out on five different diamond-grinding tools to obtain their frequency response function (FRF) curves. The vibration amplitude is measured using a dial indicator and eddy current sensor methods. Further analysis is conducted using 3D laser microscope after machining to decide the proper measurement method. It is found that various amplitudes can be successfully accurately reached from an individual cutting tool by altering the input ultrasonic frequency according to the generated FRF curve of the tool.

全件表示 >>

総説・解説等 【 表示 / 非表示

  • 金属付加製造品のレーザ研磨技術

    閻 紀旺

    砥粒加工学会誌 67 ( 8 ) 440 - 443 2023年08月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者

  • 硬脆材料の超精密延性モード加工

    閻 紀旺

    日本機械学会誌 125 ( 1247 ) 11 - 14 2022年10月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者, 責任著者

  • 超音波振動援用研削による炭素系難削材の加工

    閻 紀旺

    精密工学会誌 88 ( 7 ) 541 - 545 2022年07月

    記事・総説・解説・論説等(学術雑誌), 単著, 筆頭著者, 責任著者

  • 放電加工機上での電解加工による微細溝の表面仕上げ

    閻 紀旺

    型技術 37 ( 4 ) 14 - 17 2022年04月

    記事・総説・解説・論説等(商業誌、新聞、ウェブメディア), 共著, 筆頭著者, 責任著者

  • 多結晶ダイヤモンド工具を用いた単結晶SiCの放電・研削複合加工

    閻 紀旺

    砥粒加工学会誌 65 ( 12 ) 650 - 653 2021年12月

    記事・総説・解説・論説等(学術雑誌), 単著

全件表示 >>

研究発表 【 表示 / 非表示

  • Laser-induced periodic surface structures generation on single-crystal 4H-SiC by femtosecond pulsed infrared laser irradiation

    T. Meshram, J. Yan

    The 19th International Conference on Precision Engineering (ICPE2022) (Singapore) , 

    2022年11月
    -
    2022年12月

    口頭発表(一般)

  • Cutting of Microgrooves on Ferrous Metal by Using Laser-Processed cBN Tools

    D. Kitagawa, T. Meshram, J. Yan

    The 19th International Conference on Precision Engineering (ICPE2022) (Singapore) , 

    2022年11月
    -
    2022年12月

    口頭発表(一般)

  • Effect of dopant concentration on femtosecond pulsed laser processing characteristics of yttria-stabilized zirconia

    Y. Yamamuro, T. Shimoyama, J. Yan

    The 19th International Conference on Precision Engineering (ICPE2022) (Singapore) , 

    2022年11月
    -
    2022年12月

    口頭発表(一般)

  • A Novel Calibration Method of Machining Misalignment in FTS-Based Diamond Turning

    S. Tanikawa, J. Yan

    The 9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2022) (Singapore) , 

    2022年11月

    口頭発表(一般)

  • Fabrication of optical surfaces on polymethyl methacrylate by ultra-precision diamond turning

    M. Shimizu, J. Yan

    The 9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN 2022) (Singapore) , 

    2022年11月

    口頭発表(一般)

全件表示 >>

受賞 【 表示 / 非表示

  • 精密工学会論文賞

    Lin Zhang, Allen Yi, 閻 紀旺, 2023年03月, 精密工学会, Flexible fabrication of Fresnel micro-lens array by off-spindle-axis diamond turning and precision glass molding

    受賞区分: 国内学会・会議・シンポジウム等の賞

  • 2022 IJEM Best Paper Award

    Y. Sato, J. Yan, 2023年03月, International Journal of Extreme Manufacturing (IJEM), IoP publishing, Tool path generation and optimization for freeform surface diamond turning based on an independently controlled fast tool servo

    受賞区分: 学会誌・学術雑誌による顕彰

  • 工作機械技術振興賞(論文賞)

    笠井慎平, 袖平智樹, 閻 紀旺, 2021年06月, 工作機械技術振興財団, 炭素拡散反応を用いた形彫り放電加工による多結晶ダイヤモンドの3次元形状創製

    受賞区分: 出版社・新聞社・財団等の賞

  • 工作機械技術振興賞(論文賞)

    長山晃大, 閻 紀旺, 2021年06月, 工作機械技術振興財団, Measurement and Compensation of Tool Contour Error Using White Light Interferometry for Ultra-Precision Diamond Turning of Freeform Surfaces

    受賞区分: 出版社・新聞社・財団等の賞

  • 日本機械学会賞(論文)

    寺林俊雄, 閻 紀旺, 2021年04月, 日本機械学会, 2成分の波状微細構造をもつロール金型の超精密切削加工

    受賞区分: 国内学会・会議・シンポジウム等の賞

全件表示 >>

 

担当授業科目 【 表示 / 非表示

  • 超精密加工計測

    2023年度

  • マルチディシプリナリ・デザイン科学特別講義

    2023年度

  • 精密加工学

    2023年度

  • 学外特別研修(中期インターンシップ)

    2023年度

  • 学外特別研修(長期インターンシップ)

    2023年度

全件表示 >>

 

所属学協会 【 表示 / 非表示

  • 日本機械学会, 

    1997年04月
    -
    継続中
  • 精密工学会, 

    1997年04月
    -
    継続中
  • 砥粒加工学会, 

    2000年04月
    -
    継続中
  • 応用物理学会, 

    2004年04月
    -
    継続中
  • レーザ加工学会, 

    2009年01月
    -
    継続中

全件表示 >>

委員歴 【 表示 / 非表示

  • 2022年05月
    -
    継続中

    理事, レーザ協会

  • 2022年03月
    -
    継続中

    理事・執行理事・出版部会長・校閲委員長, 精密工学会

  • 2019年04月
    -
    2022年03月

    学術誌編修部会委員, 日本機械学会

  • 2019年01月
    -
    継続中

    Editorial Board Member, International Journal of Extreme Manufacturing

  • 2018年04月
    -
    継続中

    Editorial Board Member, Journal of Micromanufacturing

全件表示 >>