正木 匡彦
材料工学科 (工学部)
教授
■専門分野
金属材料科学、融体物性
■研究の内容
■研究室分野キーワード
■関連業種
3000℃以上の超高温の世界では、ほとんどの金属やセラミックスが溶解します。この超高温から物質を急速冷却することにより、新たな機能をもつアモルファス材料や準安定相の材料を作り出すことが可能です。本研究室では、レビテーション法と高出力レーザを組み合わせた非接触浮遊加熱法を用いて、セラミックスや高融点金属合金などの溶融凝固を行うことにより、新たな物質を探索しています。
材料・化学
鉄・非鉄金属製造業
鉱業
金属製品製造業
■教員研究テーマ
高温融体の物性と構造の研究
■研究室テーマ
①X線散乱法による融体構造の研究②分子動力学計算機と原子ダイナミクスの可視化
■相談可能な分野
■保有機器
■研究室のスタンス
新素材開発・評価
静電浮遊炉
X線回折装置
蛍光X線分析装置
■特許番号・出願番号
  • 拡散試験装置 正木匡彦、 内田美佐子、 伊丹俊夫 2003-42925
  • 氷の結晶成長方向制御法および氷の結晶成長実験装置 古川義純、 正木匡彦、 依田真一 2000-86394
■主な著書
  • Measurement of Structure of High Temperature and Undercooled Melts by using X-Ray Diffraction Method Combined with Levitation Technique(2008/03 Springer刊行 T. Masaki 著「High-Temperature Measurements of Materials, H. Fukuyama and Y. Waseda eds.」)
■主な論文
  • Persistence of Covalent Bonding in Liquid Silicon Probed by Inelastic X-Ray Scattering(2012/02 Pyusical Review Letters)
  • Atomic Dynamics in Extreme Environments via Inelastic X-Ray Scattering at SPring-8(2010/06 Syncrotron Radiation News)
  • Static and dynamics structure and the atomic dynamics of liquid Ge from first-principles molecular-dynamics simulations(2008/01 Phys. Rev. B)
  • Measurements of diffusion coefficient of Au in liquid Ag with the shear cell techniquie(2007/06 J. Non-Cryst. Solids)
  • Measurements of diffusion coefficient of metallic melt under microgravity-current status of the development of shear cell technique towards JEM on ISS(2005/02 Meas. Sci. Technol.)
  • The structure of liquid Sn in the extremely wide temperature range from neutron scattering experiments and first principle molecular-dynamics simulation(2003/02 Phys. Rev. B)
  • Effective Pair Interatomic Potential and Self-Diffusion of Molten Tin(2002/05 J. Non-Cryst. Solids)
  • Development of an electrostatic levitator for neutron diffraction structure analysis(2003/02 Rev. Sci. Instrum)
  • The X-ray observation of the shear cell experiments for impurity diffusion of Au in liquid Ag(2002/05 J. Non-Cryst. Solids)
  • The critical behavior under microgravity of liquid alloys with mutual immiscibility(2005/02 Meas. Sci. Technol.)
  • Structure studies of liquid Tin by neutron Scattering experiments and ab initio molecular dynamics simulations(2001/01 J.Phy.Soc.Japan)
  • The Role of Fluctuation on the electrical resistivity and atomic volume for some liquid alloys with critical mixing(1996/10 J. Non-Cryst. Solids)
  • Microgravity Conditions and Electrical Resistivity of Liquid Alloys with Critical Mixing(1997/03 Int. J. Thermophys.)
  • Growth of Fluctuations under Microgravity in liquid bi-Ga alloys(1996/10 J. Non-Cryst. Solids)
  • The experimental apparatus for electrical resistivity measurements of liquid metals and alloys under microgravity due to the launch of a rocket(1996/06 Rev. Sic. Instrum.)
  • The study of self-diffusion in complex metallic liquid with high melting points - The study of self-diffusion and mutual diffusion of liquid Cu-Ag alloy(2000/05 J.Phy.Soc.Microgravity Application)
  • Structure of liquid Ge at high temperatures(2002/06 J.Phy.Soc.Japan)
  • Structure and thermophysical properties of molten BaGe by using electrostatic levitation technique(2008/12 Int. J. Thermophys)
  • Compact electrostatic levitator for diffraction measurements with a two axis diffractometer and a laboratory x-ray source(2007/02 Review of Scientific Instruments)
  • Thermophysical properties of the melts of AlPdMn icosahedral quasicrystal(2007/06 Phil. Mag.)
  • Structure Analysis of Molten Ba-Ge Alloys Using Electrostatic Levitation Technique Combined with High-Energy X-ray Diffraction(2006/10 J. American Ceramic Soc.)
  • シアーセル法による溶融Ag中のAuの拡散係数測定(2005/08 熱物性)
  • Molar volume of 6Li ,7Li and natural Li in the Liquid state(2003/09 Physical Chemistry Chemical Physics)
  • 液体の拡散現象と液体構造解析(2001/12 日本マイクログラビティ応用学会誌)
  • Self-Diffusion under Microgravity and Structure of Group IVB Liquids(2002/05 J. Non-Cryst. Solids)
  • InAs-GaAs interdiffusion measurements(2000/05 JASMA)
  • 液体リチウムの拡散係数測定と同位体効果に関する研究(1999/07 日本マイクログラビティ応用学会誌)
  • Self-Diffusion Coefficient of the Melt of Semiconducting Crystalline Germanium under the Microgravity due to the Launch of the fifth TR-IA Rocket(1999/05 )
  • Diffusion of Liquid Metals and Alloys- The Study of Self-Diffusion under microgravity in liquid Sn in the wide temperature range(1998/12 日本マイクログラビティ応用学会誌)
  • Diffusion Coefficient and its Isotope Effects of Liquid Lithium under Microgravity due to the Launch of sixth TR-IA Rocket(1998/10 日本マイクログラビティ応用学会誌)
  • Technological Development of highly accurate Diffusion Coefficient Measurement by Shear Cell Method in Germanium Semiconductor Melt(1998/01 日本マイクログラビティ応用学会誌)
  • Self-Diffusion Coefficient of the Melt of Semiconducting Crystalline Germanium under Microgravity due to the Launch of the fifth TR-IA Rocket(1998/01 日本マイクログラビティ応用学会誌)
  • Two liquid phase separation of liquid Bi-Ga alloys under low gravity(1994/05 Trans. Mat. Res. Soc. Jpn)