PLD and ALD amorphous alumina microcantilevers exhibit bending plasticity with >10% strain at room temperature while sputtered films fail brittly; all show fracture toughness of 3.1 MPa m^{0.5} with no crack-tip plasticity.
García Ferré, E
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cond-mat.mtrl-sci 2years
2026 2verdicts
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Amorphous Al2O3 coatings show steadily decreasing hardness but constant Young's modulus from 25-650C, remain non-crystalline, and crystallize via intermediate phases to stable alpha-Al2O3 above 950C.
citing papers explorer
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Microscale bending plasticity and fracture behavior of amorphous aluminum oxide films
PLD and ALD amorphous alumina microcantilevers exhibit bending plasticity with >10% strain at room temperature while sputtered films fail brittly; all show fracture toughness of 3.1 MPa m^{0.5} with no crack-tip plasticity.
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High-temperature behavior of amorphous alumina coatings: Insights from in-situ nanoindentation and X-ray diffraction studies
Amorphous Al2O3 coatings show steadily decreasing hardness but constant Young's modulus from 25-650C, remain non-crystalline, and crystallize via intermediate phases to stable alpha-Al2O3 above 950C.