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
Article, Secondary publication, Publisher's Version
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Item Type: | Article |
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Type of entry: | Secondary publication |
Title: | A simple way to make tough diamond/metal laminates |
Language: | English |
Date: | 10 September 2024 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2021 |
Place of primary publication: | Amsterdam [u.a.] |
Publisher: | Elsevier |
Journal or Publication Title: | Journal of the European Ceramic Society |
Volume of the journal: | 41 |
Issue Number: | 10 |
Collation: | 9 Seiten |
DOI: | 10.26083/tuprints-00026604 |
Corresponding Links: | |
Origin: | Secondary publication service |
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. |
Uncontrolled Keywords: | Diamond foil, Ceramic laminate, Chemical vapor deposition (CVD), Mechanical behavior, Analytical modeling |
Status: | Publisher's Version |
URN: | urn:nbn:de:tuda-tuprints-266043 |
Additional Information: | This work was supported by the German Research Foundation (DFG) [grant number 386182271]. |
Classification DDC: | 500 Science and mathematics > 530 Physics 600 Technology, medicine, applied sciences > 660 Chemical engineering |
Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy |
Date Deposited: | 10 Sep 2024 07:52 |
Last Modified: | 10 Sep 2024 07:53 |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/26604 |
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