Xuan, Yang ; Fromm, Timo ; Bruns, Sebastian ; Borchardt, Rudolf ; Durst, Karsten ; Rosiwal, Stefan M. (2021)
A simple way to make tough diamond/metal laminates.
In: Journal of the European Ceramic Society, 41 (10)
doi: 10.1016/j.jeurceramsoc.2021.03.055
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Diamond foils are exceptionally strong yet brittle. One approach to make ceramic foils less susceptible to brittle fracture is to introduce interfaces into the material that provide pathways for crack deflection. In this study, we were able to produce strong yet tough diamond/metal laminates (DMLs) from freestanding diamond foils using a brazing process. The mechanical behavior was characterized via three-point bending (3PB) where the laminates exhibit step-like fracture. Crack deflection at interfaces induces toughening within the laminates. At approx. 3.0 MJ/m3 diamond/metal laminates exhibit more than twice the fracture energy of monolithic diamond foils while maintaining 90 % stiffness and about 70 % nominal strength. Classical laminate theory (CLT) supports the assessment of the deformation behavior and step-like fracture of diamond/metal laminates. We find that the diamond-to-metal interface plays a critical role: it must be strong enough to enable the transfer of shear stress, while being weak enough to deflect a crack.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Xuan, Yang ; Fromm, Timo ; Bruns, Sebastian ; Borchardt, Rudolf ; Durst, Karsten ; Rosiwal, Stefan M. |
| Art des Eintrags: | Bibliographie |
| Titel: | A simple way to make tough diamond/metal laminates |
| Sprache: | Englisch |
| Publikationsjahr: | 2021 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 41 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1016/j.jeurceramsoc.2021.03.055 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Diamond foils are exceptionally strong yet brittle. One approach to make ceramic foils less susceptible to brittle fracture is to introduce interfaces into the material that provide pathways for crack deflection. In this study, we were able to produce strong yet tough diamond/metal laminates (DMLs) from freestanding diamond foils using a brazing process. The mechanical behavior was characterized via three-point bending (3PB) where the laminates exhibit step-like fracture. Crack deflection at interfaces induces toughening within the laminates. At approx. 3.0 MJ/m3 diamond/metal laminates exhibit more than twice the fracture energy of monolithic diamond foils while maintaining 90 % stiffness and about 70 % nominal strength. Classical laminate theory (CLT) supports the assessment of the deformation behavior and step-like fracture of diamond/metal laminates. We find that the diamond-to-metal interface plays a critical role: it must be strong enough to enable the transfer of shear stress, while being weak enough to deflect a crack. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde |
| Hinterlegungsdatum: | 16 Feb 2023 06:27 |
| Letzte Änderung: | 11 Sep 2024 08:33 |
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| Suche nach Titel in: | TUfind oder in Google |
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A simple way to make tough diamond/metal laminates. (deposited 10 Sep 2024 07:52)
- A simple way to make tough diamond/metal laminates. (deposited 16 Feb 2023 06:27) [Gegenwärtig angezeigt]
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