Growth of triglycine sulfate (TGS) crystals by solution techniqueThe growth of crystals from solution is greatly influenced by buoyancy driven convection. In a low-g environment, convection is greatly suppressed and diffusion becomes the predominant mechanism for thermal and mass transport. An experiment to grow TGS crystals by solution technique during the orbital Spacelab III mission has been designed. Crystals are grown by a new and unique technique of extracting heat from the crystal through a sting. The cooling at the sting tip is responsible for the desired supersaturation near the growing crystal. Calculations indicate that the cooled sting technique for solution crystal growth is necessary in low-g to maintain a maximum growth rate of 1 mm/day. Results of groundbased work in support of the flight experiment are discussed.
Lal, R. B. (Alabama, A & M University Normal, AL, United States)
Kroes, R. L. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Wilcox, W. R. (Clarkson College of Technology Potsdam, NY, United States)
August 11, 2013
January 1, 1982
Meeting: Materials processing in the reduced gravity environment of space; Annual Meeting