Xuan, Yang ; Fromm, Timo ; Bruns, Sebastian ; Borchardt, Rudolf ; Durst, Karsten ; Rosiwal, Stefan M. (2024)
A simple way to make tough diamond/metal laminates.
In: Journal of the European Ceramic Society, 2021, 41 (10)
doi: 10.26083/tuprints-00026604
Artikel, Zweitveröffentlichung, Verlagsversion
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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: | 2024 |
| Autor(en): | Xuan, Yang ; Fromm, Timo ; Bruns, Sebastian ; Borchardt, Rudolf ; Durst, Karsten ; Rosiwal, Stefan M. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | A simple way to make tough diamond/metal laminates |
| Sprache: | Englisch |
| Publikationsjahr: | 10 September 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Ort der Erstveröffentlichung: | Amsterdam [u.a.] |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 41 |
| (Heft-)Nummer: | 10 |
| Kollation: | 9 Seiten |
| DOI: | 10.26083/tuprints-00026604 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/26604 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| 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. |
| Freie Schlagworte: | Diamond foil, Ceramic laminate, Chemical vapor deposition (CVD), Mechanical behavior, Analytical modeling |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-266043 |
| Zusätzliche Informationen: | This work was supported by the German Research Foundation (DFG) [grant number 386182271]. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| 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: | 10 Sep 2024 07:52 |
| Letzte Änderung: | 11 Sep 2024 08:32 |
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- A simple way to make tough diamond/metal laminates. (deposited 10 Sep 2024 07:52) [Gegenwärtig angezeigt]
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