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000887813 1001_ $$0P:(DE-Juel1)185039$$aRheinheimer, Wolfgang$$b0$$eCorresponding author
000887813 245__ $$aEquilibrium and kinetic shapes of grains in polycrystals
000887813 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2020
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000887813 520__ $$aThe equilibrium crystal shape is a convex shape bound by the lowest energy interfaces. In many polycrystalline microstructures created by grain growth, the observed distribution of grain boundary planes appears to be dominated at low driving forces (after long grain growth times) by the planes present in the equilibrium crystal shape. However, at earlier stages of grain growth, it is expected that kinetic effects will play an important role in grain boundary motion and morphology. Analogous to the equilibrium crystal shape, the kinetic crystal shape of seed crystals growing from a liquid at higher supersaturations is bound by the slowest growing orientations. This study presents an equivalent construction for grain boundaries in polycrystals and uses it to determine the kinetic crystal shape for strontium titanate as a function of temperature. Relative grain boundary mobilities for strontium titanate for the low energy crystallographic orientations from seeded polycrystal experiments are used to calculate the kinetic crystal shapes as a function of temperature and annealing atmosphere. The kinetic crystal shapes are then compared to the morphologies and orientations of the interfaces of the growing seed crystals, and to the equilibrium crystal shapes, as wel
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000887813 7001_ $$0P:(DE-HGF)0$$aBlendell, John E.$$b1
000887813 7001_ $$0P:(DE-HGF)0$$aHandwerker, Carol A.$$b2
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