Precise measurement of physical properties of high melting point melts using microgravity environment

利用微重力环境精确测量高熔点熔体的物理性质

• 批准号: 09305050
• 负责人: NOGI Kiyoshi
• 金额: $ 19.84万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09305050/
• 关键词: Density; Surface Tension; Viscosity; High Temperature Melt; Microgravity; Supercooling; 浮遊液滴法

Surface tension and density of high temperature melts, especially liquid silicon were measured with the levitated drop method using microgravity environment which is the longest term, 10 seconds, and the highest quality on the earth.The results can be summarized as follows ;(1) A measurement method for surface tension and density of high temperature melts under microgravity environment.(2) Surface oscillation mode of melt caused by surface tension was analyzed.(3) Surface tension values obtained in this work were more reliable than those in previous works.(4) Surface tension and density were measured under supercooled condition because of containerless process.(5) Surface tension of liquid silicon was not affected by an oxygen partial pressure in an atmosphere in the present experimental condition.(6) Surface tension and its temperature coefficient of liquid silicon were 734 mN/m at the melting point and 0.069 mN/mK, respectively.(7) An applicable range of correction equation was obtained for a calculation of surface tension.(8) Positioning of liquid drop must be controlled to measure the density by the levitated drop method.

利用目前世界上使用时间最长、质量最高的微重力环境--悬浮液滴法，对高温熔体，特别是液态硅的表面张力和密度进行了测量，主要研究结果如下：（1）建立了微重力环境下高温熔体表面张力和密度的测量方法。(2)分析了由表面张力引起的熔体表面振荡模式。(3)在这项工作中获得的表面张力值比以前的作品更可靠。(4)由于无容器工艺，在过冷条件下测量了表面张力和密度。(5)在本实验条件下，液态硅的表面张力不受大气中氧分压的影响。(6)液态硅的熔点表面张力为734 mN/m，温度系数为0.069mN/mK。(7)得到了计算表面张力时修正方程的适用范围。(8)悬浮滴法测量密度时，必须控制液滴的位置。

项目成果

野城清、 北川貞雄: "微小重力環境を利用した溶融半導体の表面張力の測定" 研究基盤施設合同シンポジウム '98. 23-28 (1998)

Kiyoshi Noshiro、Sadao Kitakawa：“利用微重力环境测量熔融半导体的表面张力”研究基础设施联合研讨会 98（1998 年）。

H.Fujii, T.Matsumoto, K.Nogi: ""Measurement of Surface Tension of Molten Silicon using Electromagnetic Levitation in Drop Shaft"" Proc.Int.Conf.High Temp.Capillarity. 322-327 (1997)

H.Fujii、T.Matsumoto、K.Nogi：“使用落轴中的电磁悬浮测量熔融硅的表面张力”Proc.Int.Conf.高温毛细管现象。

H.Fujii, T.Matsumoto, M.Kohno, N.Hata, K.Nogi: ""Oscillation Analysis of Electromagnetic levitated Drop for Determination of Thermophysical Properties"" Proc.5th Asian Thermo-physical Properties Conf. Korea. 511-514 (1998)

H.Fujii、T.Matsumoto、M.Kohno、N.Hata、K.Nogi：“用于确定热物理性质的电磁悬浮液滴振荡分析”Proc.5th 亚洲热物理性质会议。

H.Fujii, T.Matsumoto, K.Nogi: "Measurement of Surface Tension of Molten Silicon using Electromagnetic Levitation in Drop Shaft" Proc.Int.Conf High Temp.Capillarity. 322-327 (1997)

H.Fujii、T.Matsumoto、K.Nogi：“使用落轴中的电磁悬浮测量熔融硅的表面张力”Proc.Int.Conf 高温毛细管现象。

J.Shinohara, K.Izumi, Y.Ikegami, M.Ogiwara, S.Iwasaki, S.Kitagawa, K.Nogi: ""Levitation Furnace For Material Processing Tests Under Micro-gravity Environment" The 6th Space Engineering Conference. SEC'97. 78-82 (1997)

J.Shinohara、K.Izumi、Y.Ikegami、M.Ogiwara、S.Iwasaki、S.Kitakawa、K.Nogi：““微重力环境下材料加工测试的悬浮炉”第六届空间工程会议。SEC”