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Materials processing in zero gravityManufacturing processes which are expected to show drastic changes in a space environment due to the absence of earth gravity are classified according to (1) buoyancy and thermal convection sensitive processes and (2) processes where molecular forces like cohesion and adhesion remain as the relatively strongest and hence controlling factors. Some specific process demonstration experiments carried out during the Apollo 14 mission and in the Skylab program are described. These include chemical separation by electrophoresis, the M551 metals melting experiment, the M552 exothermic brazing experiment, the M553 sphere forming experiment, the M554 composite casting experiment, and the M555 gallium arsenide crystal growth experiment.
Document ID
19740042219
Document Type
Conference Proceedings
Authors
Wuenscher, H. F.
(NASA Marshall Space Flight Center Process Engineering Laboratory, Huntsville, Ala., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Machine Elements And Processes
Meeting Information
Meeting: Astronautical research 1972
Location: Vienna
Country: Austria
Start Date: October 8, 1972
End Date: October 15, 1972
Accession Number
74A24969
Distribution Limits
Public
Copyright
Other

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