@inproceedings{oai:jaxa.repo.nii.ac.jp:00013183,
 author = {渡邉, 匡人 and 小澤, 俊平 and 水野, 章敏 and 日比谷, 孟俊 and 田川, 俊夫 and 塚田, 隆夫 and 杉岡, 健一 and 福山, 博之 and 小畠, 秀和 and 田中, 敏宏 and 吉川, 健 and 安田, 秀幸 and 景山, 大郎 and 石川, 毅彦 and Watanabe, Masahito and Ozawa, Shunpei and Mizuno, Akitoshi and Hibiya, Taketoshi and Tagawa, Toshio and Tsukada, Takao and Sugioka, Kenichi and Fukuyama, Hiroyuki and Kobatake, Hidekazu and Tanaka, Toshihiro and Yoshikawa, Ken and Yasuda, Hideyuki and Kageyama, Dairo and Ishikawa, Takehiko and Fecht, H. J. and Wunderlich, R. and Ricci, E. and Arato, E.},
 book = {宇宙利用シンポジウム, Space Utilization Research: Proceedings of Space Utilization Symposium},
 month = {Feb},
 note = {第26回宇宙利用シンポジウム(2010年1月25日-26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan), Microgravity conditions have advantages of measurement of surface tension and viscosity of metallic liquids by the oscillating drop method with an electromagnetic levitation (EML) device. Recently, it has been identified that dependence of surface tension on oxygen partial pressure (Psub o2) must be considered for industrial application of surface tension values. Effect of Po2 on surface tension would apparently change viscosity. Therefore, surface tension and viscosity must be measured simultaneously in the same atmospheric conditions. Moreover, effect of the electromagnetic force (EMF) on the surface oscillations must be clarified to obtain the ideal surface oscillation because the EMF works as the external damping force to the oscillating liquid droplets, so extensive EMF makes apparently the viscosity values large. In our working group (WG), using the parabolic flight levitation experimental facilities (PFLEX) the effects of Po2 and external EMF on surface oscillation of levitated liquid droplets are systematically investigated for the precise measurements of surface tension and viscosity of high temperature liquids. In this year we performed the observation of surface oscillations of levitated liquid Si-Cu alloys using PFLEX on board flight experiments by G-II operated by DAS. These observations were performed under the controlled Po2 conditions. In these experiments, we obtained the density, the viscosity and the surface tension values. From these measurements, we discussed surface segregation in systems forming intermetallic compounds. We found the effect of clusters in both density and surface tension experimental data. The composition dependence of surface tension was expressed by a modified ideal solution model. On the basis of activity of our working group and European WG, we proposed the research of thermophysical properties measurement of high-temperature liquids under microgravity conditions to ESA/JAXA-AO as ISS utilization program., 形態: カラー図版あり, 共催: 日本学術会議, 著者人数: 18人, Physical characteristics: Original contains color illustrations, joint hosting: The Science Council of Japan, 資料番号: AA0064730036},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)},
 title = {WG活動報告: 微小重力下での酸素分圧制御による金属性融体の表面張力測定},
 volume = {26},
 year = {2010}
}