增强 PVD 的腐蚀防护能力

IF 0.4 Q4 ENGINEERING, MECHANICAL
H. Hoche, Thomas Ulrich, Peter Kaestner, Matthias Oechsner
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引用次数: 0

摘要

一种新型的整体直流磁控溅射 TiN+MgGd 涂层厚度仅为 3 至 5 μm,可有效保护钢基体免受腐蚀。这一成果归功于 TiN 与 MgGd 的合金化,它不仅保持了 TiN 涂层著名的耐磨性,而且通过优化沉积参数还有可能提高其耐磨性。它降低了涂层的自由腐蚀电位,从而减轻了涂层与基体之间电化学腐蚀的驱动力。此外,在特定的镁钆比例下,还能观察到阴极保护效应。最重要的是,Gd 的存在对这种性能至关重要。这一发现为电镀铬或电镀与 PVD 相结合的可持续替代品铺平了道路,它能以最小的涂层厚度提供卓越的腐蚀保护。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Empowering PVD for corrosion protection
A novel, monolithic DC‐magnetron sputtered TiN+MgGd coating, only 3to5 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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来源期刊
Vakuum in Forschung und Praxis
Vakuum in Forschung und Praxis ENGINEERING, MECHANICAL-
CiteScore
0.30
自引率
0.00%
发文量
84
期刊介绍: VIP – Vakuum in Forschung und Praxis - Zeitschrift für Vakuumtechnologie, Oberflächen und Dünne Schichten ist die einzige Zeitschrift für alle Bereiche der Vakuumtechnologie und Dünnschichttechnik, die sich als Brücke und Bindeglied zwischen Wissenschaftlern, Praktikern und Anwendern aus Forschung, Entwicklung und Produktion versteht. Sie berichtet und informiert über neueste Entwicklungen und Erkenntnisse. VIP – Vakuum in Forschung und Praxis veröffentlicht u.a. - Übersichtsartikel - Fachaufsätze - referierte Beiträge aus der Forschung - Anwenderberichte - Produktinformationen - Interviews - Buchbesprechungen und -hinweise - Produkt- und Lieferantenverzeichnis
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