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Bioinspired damage tolerant diamond-metal laminates by alternating CVD and PVD processes

Fromm, Timo ; Bruns, Sebastian ; Müller, Marie-Christin ; Fink, Alexander ; Borchardt, Rudolf ; Rosiwal, Stefan M. ; Durst, Karsten (2024)
Bioinspired damage tolerant diamond-metal laminates by alternating CVD and PVD processes.
In: Materials & Design, 2022, 213
doi: 10.26083/tuprints-00026605
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Bioinspired damage tolerant diamond-metal laminates by alternating CVD and PVD processes
Language: English
Date: 10 September 2024
Place of Publication: Darmstadt
Year of primary publication: 2022
Place of primary publication: Amsterdam [u.a.]
Publisher: Elsevier
Journal or Publication Title: Materials & Design
Volume of the journal: 213
Collation: 11 Seiten
DOI: 10.26083/tuprints-00026605
Corresponding Links:
Origin: Secondary publication service
Abstract:

In this study, we present a novel process to fabricate diamond-metal laminates. By means of successive chemical vapor deposition and physical vapor deposition processes, the lamellar material is deposited layer by layer on silicon wafers. Laminates consisting of two, five and ten layers of diamond were realized. In addition, fabrication of diamond-based, biomimetic brick-and-mortar structures was successful for the first time. For this purpose, diamond layers of a five-layer laminate were structured by laser cutting into hexagonal platelets with diameters of 400 µm and 800 µm. The mechanical behavior was characterized by three-point bending. Mostly spontaneous failure with little crack deflection was observed, indicating a strong diamond-metal interface. At over 1250 MPa, the laminates exhibit nominal strengths that exceed those of other lamellar ceramic-metal composites by at least a factor of two, while fracture energy lies in a medium range. The laminates with segmented diamond layers exhibit damage tolerance.

Uncontrolled Keywords: Diamond foil, Ceramic laminates, Chemical vapor deposition (CVD), Physical vapor deposition (PVD), Biomimetic materials, Toughness
Identification Number: Artikel-ID: 110315
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-266053
Additional Information:

This work was supported by the Deutsche Forschungsgemeinschaft (DFG – German Research Foundation) grant number 386182271.

Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
Date Deposited: 10 Sep 2024 07:49
Last Modified: 10 Sep 2024 07:49
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/26605
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