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Complex Nonlinear Deformation of Nanometer Intergranular Glassy Films in β−Si3N4
Chen, Jun Ouyang, Lizhi Rulis, Paul Misra, Anil Ching, Wai-Yim
Chen, Jun
Ouyang, Lizhi
Rulis, Paul
Misra, Anil
Ching, Wai-Yim
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Abstract
The mechanical properties of a model of Y-doped intergranular glassy film in silicon nitride ceramics are studied by large-scale ab initio modeling. By linking directly to its electronic structure, it is shown that this microstructure has a complex nonlinear deformation under stress and Y doping significantly enhances the mechanical properties. The calculation of the electrostatic potential across the film supports the space charge model in ceramic microstructures.
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This is the published version. Copyright 2005 American Physical Society
Date
2005-12-16
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American Physical Society
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Chen, Jun, Lizhi Ouyang, Paul Rulis, Anil Misra, and W. Y. Ching. "Complex Nonlinear Deformation of Nanometer Intergranular Glassy Films in β − Si 3 N 4." Phys. Rev. Lett. Physical Review Letters 95.25 (2005). http://dx.doi.org/10.1103/PhysRevLett.95.256103