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Initiation of metamorphosis of porosity during liquid-phase sintering in microgravity
Yubin He, Saiyin Ye, Jamil Naser, Anjilivelil Kuruvilla, James Smith, Alexander Ivanov, Yu Bratuchin, G Putin

In microgravity liquid-phase sintering (LPS), the reduction of sedimentation-driven convection permits the study of pore formation and metamorphosis otherwise obscured by gravity. These motions result from interfacial energy differences, instabilities, and grain coarsening along the interface between phases. A theoretical model is presented to monitor the trends of shape changes of a pore in microgravity.

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