Diffusion of Liquid Metals and Alloys -The study of self-diffusion under microgravity in liquid Sn in the wide temperature range-

• ITAMI Toshio

  Division of Chemistry, Graduated School of Science, Hokkaido University Invited Researcher of National Space Developement of Agency in Japan (NASDA)

• AOKI Hirokatsu

  Division of Chemistry, Graduated School of Science, Hokkaido University

• KANEKO Minoru

  Space Department, Ishikawajima Jet service Co., Ltd.

• UCHIDA Misako

  Materials Technology Dept., Research Inst., Ishikawajima-Harima Heavy Industries Co., Ltd.

• SHISA Akira

  Space Experiment System Department, Ishikawajima-Harima Heavy Industries Co. Ltd.

• AMANO Shin-ichi

  Space Experiment System Department, Ishikawajima-Harima Heavy Industries Co. Ltd.

• ODAWARA Osamu

  Department of Materials and Engineering, Tokyo Institute of Technology

• MASAKI Tadahiko

  Space Utilization Research Center, Office of National Space Developement of Agency in Japan (NASDA)

• ODA Hirohisa

  Space Utilization Research Center, Office of National Space Developement of Agency in Japan (NASDA)

• OOIDA Toshihiko

  Space Utilization Research Center, Office of National Space Developement of Agency in Japan (NASDA)

• YODA Shin-ichi

  Space Utilization Research Center, Office of National Space Developement of Agency in Japan (NASDA)

抄録

In the MSL-1 mission the self-diffusion coefficient, D, in liquid Sn was investigated at five temperatures in the wide temperature range up to 1622 K. The long capillary (LC) method was adopted with the use of stable isotope 124Sn as a tracer. The concentration profiles of 124Sn were determined by the SIMS analysis. The D was determined by the analytical solution of the Fick's second law combined with the effective time, terr• In this effective time the effect of diffusion on both the heating and cooling periods was taken into account properly in addi­tion to the keeping time. In the practical application the iteration method was adopted. The obtained self-diffusion coefficients remain to be small enough even at 1622 K contrary to the abrupt increase of the ground data in the literature due to the same LC method. The present data at 1622 K was in good agreement with D obtained by the shear cell technique, which was adopted in the present MSL-1 mission by NASDA. The extrapolation of present data to the low temperature range is in good agreement with the microgravity data of D due to Frohberg et al. The power index in the temperature dependence of Dis 1.81 for the present data and 2.04 for the all microgravity data of D though the latter index seems to be much affected by the data due to Frohberg et al. Obtained data was analyzed by the hard sphere model. Agreement between calculations and experiments is qualitatively good though 1.77 was obtained as the power index for the calculated temperature dependence of D. The prediction of the vis­cosity of some liquid metals was successfully performed by the hard sphere model, in which the present experimental information of D under microgravity is taken into account.

収録刊行物

• 日本マイクログラビティ応用学会誌

  日本マイクログラビティ応用学会誌 15 (4), 225-, 1998-10-31

  日本マイクログラビティ応用学会

詳細情報

• CRID: 1390568456353820416
• NII論文ID: 10002845634
• NII書誌ID: AN10537663
• DOI: 10.15011/jasma.15.4.225
• NDL書誌ID: 4658235
• ISSN: 09153616
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4658235
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可