Hoche, Holger ; Ulrich, Thomas ; Kaestner, Peter ; Oechsner, Matthias (2024)
Empowering PVD for corrosion protection : TiMgGdN coatings with game‐changing corrosion performance: A genuine competitor to electroplated chromium.
In: Vakuum in Forschung und Praxis, 2024, 36 (2)
doi: 10.26083/tuprints-00027122
Article, Secondary publication, Publisher's Version
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Item Type: | Article | ||||
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Type of entry: | Secondary publication | ||||
Title: | Empowering PVD for corrosion protection : TiMgGdN coatings with game‐changing corrosion performance: A genuine competitor to electroplated chromium | ||||
Language: | English | ||||
Date: | 11 June 2024 | ||||
Place of Publication: | Darmstadt | ||||
Year of primary publication: | April 2024 | ||||
Place of primary publication: | Weinheim | ||||
Publisher: | Wiley-VCH | ||||
Journal or Publication Title: | Vakuum in Forschung und Praxis | ||||
Volume of the journal: | 36 | ||||
Issue Number: | 2 | ||||
DOI: | 10.26083/tuprints-00027122 | ||||
Corresponding Links: | |||||
Origin: | Secondary publication DeepGreen | ||||
Abstract: | A novel, monolithic DC‐magnetron sputtered TiN+MgGd coating, only 3 to 5 μm thick, effectively protects steel substrates from corrosion. This achievement is due to alloying of TiN with MgGd, which not only maintains the renowned wear resistance of TiN coatings, but potentially improves it through optimized deposition parameters. The key to the enhanced corrosion resistance lies in the addition of magnesium (Mg) and gadolinium (Gd). It reduces the coating's free corrosion potential, thereby mitigating the driving force for galvanic corrosion between coating and substrate. Moreover, at specific Mg to Gd ratios, a cathodic protection effect can be observed. Crucially, the presence of Gd is essential for this performance. It imparts hydrophobicity to the coating surface, reinforces a passivating layer and significantly enhances defect tolerance. This discovery paves the way for a sustainable alternative to electroplated chromium or combined electroplating and PVD, offering superior corrosion protection with minimal coating thickness. |
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Status: | Publisher's Version | ||||
URN: | urn:nbn:de:tuda-tuprints-271227 | ||||
Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering | ||||
Divisions: | 16 Department of Mechanical Engineering > Center for Engineering Materials, State Materials Testing Institute Darmstadt (MPA) Chair and Institute for Materials Technology (IfW) | ||||
Date Deposited: | 11 Jun 2024 11:53 | ||||
Last Modified: | 13 Jun 2024 09:37 | ||||
SWORD Depositor: | Deep Green | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/27122 | ||||
PPN: | 519042719 | ||||
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