National Space Development Agency of Japan Space Utilization Research Center
Advanced Engineering Services Co Ltd Space Development Division
National Space Development Agency of Japan Space Utilization Research Center
出版者
宇宙開発事業団
出版者（英）
National Space Development Agency of Japan (NASDA)
It is hard to measure the liquid diffusion coefficients on the ground because of the buoyancy convection. The highly precise liquid diffusion coefficient at high temperature is needed to clarify the diffusion mechanisms. In order to measure the liquid diffusion coefficients on the ground and to grasp the limitation of the ground experiments, the techniques for ground diffusion experiments based on the shear cell method was established. This technique is how to make thin and uniform samples and how to analyze the concentration of diffusion samples. The diffusion couple of Ag and Ag(0.95)Au(0.05) was selected and diffused at 1,273 K for four minutes. The diffusion coefficient was obtained as 3.0 x 10(exp -9) sq m/sec at 1.273 K.
The liquid diffusion measurements using the shear cell technique on the ground
29039018.pdf
(168.79KB)
