Abstract
Microstructural evolution in the near-surface layer of a model metal-ceramic system, Pt-implanted high-purity polycrystalline Al2O3 (PCA), was studied, and compared to that in Pt-implanted sapphire. Interactions between Pt particles and migrating α/α grain boundaries in PCA caused Pt particle redistribution and Pt loss, and were evaluated in the context of Zener pinning and particle-drag theories. The experimental method allows the transition from the original to the new equilibrium shape due to the changes in orientation relationship to be examined. As a result of the potentially wide range of equilibrium shapes, interface crystallographies, and transitional morphologies that the microstructural evolution imposes, the experimental method provides a flexible framework for fundamental studies of the energetic and kinetic properties of ceramic-metal interfaces.
Original language | English |
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Pages (from-to) | 169-179 |
Number of pages | 11 |
Journal | Acta Materialia |
Volume | 83 |
DOIs | |
Publication status | Published - 15 Jan 2015 |