Fabrication of immiscible alloy particles utilizing laser process in liquid

• Project/Area Number: 25630341
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Metal making/Resorce production engineering
• Research Institution: Hokkaido University
• Principal Investigator: KOSHIZAKI Naoto 北海道大学, 工学(系)研究科(研究院), 教授 (40344197)
• Co-Investigator(Kenkyū-buntansha): NAKAMURA Takahiro 東北大学, 多元物質科学研究所, 助教 (50400429)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 液中レーザー溶融法 / パルス加熱 / 局所加熱 / 非相溶性合金 / 2成分コロイド溶液 / レーザー照射 / 非集光 / Au-Fe

Outline of Final Research Achievements

Pulsed laser melting in liquid environment is a novel technique to produce submicrometer spherical particles of various materials by dispersing raw particles in liquid and irradiating pulsed laser with appropriate fluence. Here we investigate two-component raw particle mixture case aiming for fabricating submicrometer spherical particles of immiscible alloys.
Raw nanoparticles of Au and iron oxide dispersed in ethanol were mixed with different weight ratio and irradiated by a third harmonic of Nd:YAG laser. Submicrometer spherical particles were formed in all concentration range. In low Au concentration range, phase-separated particles were observed, while in high range homogeneous particles were obtained, indicating Au-Fe alloy formation. Furthermore, by repetitive laser irradiation, composition ratio between Au to Fe was gradually approached to the thermodynamically stable alloy composition. Therefore, shorter laser irradiation time is favorable to obtain immiscible alloy particles.

Research Products

• [Journal Article] レーザー溶融による結晶性サブマイクロメートル球状粒子合成 (2015)
  • Author(s): 越崎直人
  • Journal Title: 化学と工業 Volume: 68 Pages: 134-136
  • Peer Reviewed
• [Journal Article] Growthmechanism of monodisperse spherical particles under nanosecond pulsed laser irradiation (2014)
  • Author(s): Alexander Pyatenko, Hongqiang Wang, Naoto Koshizaki
  • Journal Title: Journal of Physical Chemistry C Volume: 118 Issue: 8 Pages: 4495-4500
  • DOI: 10.1021/jp411958v
  • Peer Reviewed
• [Journal Article] Fabrication of Submicron Spherical Metal Particles by Laser Melting in Liquid (2014)
  • Author(s): 越崎直人, 辻 剛志, 石川善恵
  • Journal Title: Materia Japan Volume: 53 Issue: 3 Pages: 87-93
  • DOI: 10.2320/materia.53.87
  • NAID: 130003398598
  • ISSN: 1340-2625, 1884-5843
  • Peer Reviewed
• [Journal Article] Mechanism of pulse laser interaction with colloidal nanoparticles (2013)
  • Author(s): Alexander Pyatenko, Hongqiang Wang, Naoto Koshizaki, Takeshi Tsuji
  • Journal Title: Laser & Photonics Reviews Volume: 7 Issue: 4 Pages: 596-604
  • DOI: 10.1002/lpor.201300013
  • Peer Reviewed
• [Presentation] 液中レーザー溶融法によって作製したAu-Fe系粒子の２成分混合比による構造変化 (2015)
  • Author(s): 布施北斗，越崎直人，石川善恵
  • Organizer: レーザー学会学術講演会第35回年次大会
  • Place of Presentation: 東海大学高輪校舎、東京
  • Year and Date: 2015-01-11
• [Presentation] Pulsed laser melting in liquid for submicron spherical particles of crystalline functional materials - fluence effect on particle size - (2014)
  • Author(s): Naoto Koshizaki, Yoshie Ishikawa, Alexander Pyatenko
  • Organizer: 9th International Conference on Photo-Excited Processes and Applications (ICPEPA-9)
  • Place of Presentation: KUNIBIKI MESSE, Matsue, Shimane, Japan
  • Year and Date: 2014-10-01
  • Invited
• [Presentation] 有機溶媒中での液中レーザー溶融法における添加剤効果 (2014)
  • Author(s): 安田圭佑、越崎直人、石川善恵
  • Organizer: 2014年第75回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学、札幌
  • Year and Date: 2014-09-17
• [Presentation] Synthesis of the non-equilibrium bimetallic nano-alloys by pulse laser melting in liquid (2014)
  • Author(s): Zaneta Swiatkowska-Warkocka, Alexander Pyatenko, Naoto Koshizaki
  • Organizer: 3rd Conference on Advanced Nanoparticle Generation and Excitation by Lasers in Liquids
  • Place of Presentation: Hotel JAL City, Matsusyama, Ehime, Japan
  • Year and Date: 2014-05-20
• [Presentation] 液中レーザー溶融法を用いたAu-Fe系サブミクロン球状粒子の作製 (2014)
  • Author(s): 布施 北斗, 石川 善恵, 古賀 健司, 越崎 直人
  • Organizer: 2014年 第61回応用物理学会春季学術講演会
  • Place of Presentation: 青山学院大学相模原キャンパス（相模原市）
• [Presentation] Fabrication of crystalline submicrometer spherical particles and their optical and medical applications (2013)
  • Author(s): Naoto Koshizaki, Alexander Pyatenko, Yukiko Katou, Yoshie Ishikawa, Takeshi Tsuji
  • Organizer: XLVIII Zakopane School of Physics
  • Place of Presentation: Zakopane, Poland
  • Invited
• [Presentation] 液中レーザー溶融法による結晶性サブミクロン球状粒子の作製とその機能 (2013)
  • Author(s): 越崎 直人, Alexander Pyatenko, 加藤 友紀子, 石川 善恵, 辻 剛志
  • Organizer: ナノ学会第11 回大会
  • Place of Presentation: 東京工業大学百年記念館（東京都目黒区）
• [Presentation] レーザー利用粒子合成技術 －ナノ粒子からサブミクロン球状粒子へ－ (2013)
  • Author(s): 越崎 直人
  • Organizer: 第142回電子セラミック・プロセス研究会
  • Place of Presentation: 横浜港湾福利厚生協会 波止場会館（横浜市）
  • Invited
• [Presentation] Fabrication and application of submicron spherical particles prepared by pulsed laser melting in liquid (2013)
  • Author(s): Naoto Koshizaki, Yoshie Ishikawa, Alexander Pyatenko, Yukiko Katou, Takeshi Tsuji
  • Organizer: The 6th International Congress on Laser Advanced Materials Processing (LAMP2013)
  • Place of Presentation: Toki Messe, Niigata, Japan
  • Invited
• [Presentation] 液中レーザー溶融法の2 成分ナノ粒子原料系への適用 (2013)
  • Author(s): 越崎 直人, Xiangyou Li, Zaneta Swiatkowska, 石川 善恵
  • Organizer: 第5回日本化学会新領域研究グループ「液相高密度エネルギーナノ反応場」研究会 「液相中へのレーザー光照射による粒子合成の新展開－その基礎から応用－」
  • Place of Presentation: 産業技術総合研究所 臨海副都心センター（東京都江東区）