PROCESSING OF PLUMBUM-STIBUM ALLOY UNDER MICROGRAVITY ENVIRONMENT IN SPACE

Abstract

Abstract: Small pieces of Plumbum-Stibum (Pb-11.2wt%Sb) were sealed in quartz tube,heated and then cooled slowly during the flight of the satellite in space.And the simulating experiment is also carried out on the ground.The microstrutual feature and morphology of space processed samp- les have been investigated in comparison with ground-based samples.It was found that the space sample with smooth surface has very homogeneous and fine microstructure,while the ground-based samples,one has split into two parts and the other one has“narrow neck”in the middle.The reason for these is that the convection induced by gravity has been reduced greatly under microgravity environment in sapce.

Key words: Alloy, Weightless environment, Development

Rong Lijian Wen Youhai Zhang Xiumu Li Yiyi (Institute of Metal Research,Academia Sinica,Shenyang). PROCESSING OF PLUMBUM-STIBUM ALLOY UNDER MICROGRAVITY ENVIRONMENT IN SPACE[J]. .

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PROCESSING OF PLUMBUM-STIBUM ALLOY UNDER MICROGRAVITY ENVIRONMENT IN SPACE

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