Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS

Sustainability issues are essential for component performance in many corrosive environments. For this purpose, the development of environmentally friendly, industrially and economically viable surface treatments is performed. In this work, substrate/coating systems developed by HiPIMS process are s...

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Main Author: Chabanon, Angelique Annie
Other Authors: Dong Zhili
Format: Thesis-Doctor of Philosophy
Language:English
Published: Nanyang Technological University 2022
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Online Access:https://hdl.handle.net/10356/156317
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spelling sg-ntu-dr.10356-1563172023-03-05T16:37:11Z Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS Chabanon, Angelique Annie Dong Zhili Interdisciplinary Graduate School (IGS) CEA Saclay Sorbonne University Energy Research Institute @ NTU (ERI@N) Balbaud-Celerier Fanny ZLDong@ntu.edu.sg Science::Chemistry::Physical chemistry Sustainability issues are essential for component performance in many corrosive environments. For this purpose, the development of environmentally friendly, industrially and economically viable surface treatments is performed. In this work, substrate/coating systems developed by HiPIMS process are studied. The objective is to understand and characterize in detail the role of the different interfaces encountered in these systems in order to optimize their resistance to corrosion in nitric acid and seawater. Firstly, the pre-treatment of the substrate by HiPIMS ion etching and its influence on a substrate/metallic bond coat system are studied. Three types of ion etching (Ar+, Ti+ and Zr+) are performed and lead to a modification of the substrate surface by implantation of the sputtered elements on the first nanometers. This leads to the modification of the chemical composition of the passive layer and improves the corrosion resistance of the metal ion-etched substrates in both studied environments. Then, a 200 nm-thick metallic bond coat (Ti/Zr) is deposited on the etched substrates to study the substrate/metallic bond coat interface. The beneficial effect of metal ion etching is still observed after deposition of the bond coat, suggesting that the metal species can act as a preferential nucleation site for metallic layer growth and probably promote a denser film. Secondly, a 5 µm-thick non-optimized substrate/metallic bond coat/oxide coating (TiO2/ZrO2) system is studied. The results indicate that Zr-based systems are promising for corrosion protection in our two study media. Doctor of Philosophy 2022-05-07T09:46:45Z 2022-05-07T09:46:45Z 2022 Thesis-Doctor of Philosophy Chabanon, A. A. (2022). Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/156317 https://hdl.handle.net/10356/156317 10.32657/10356/156317 en This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Chemistry::Physical chemistry
spellingShingle Science::Chemistry::Physical chemistry
Chabanon, Angelique Annie
Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS
description Sustainability issues are essential for component performance in many corrosive environments. For this purpose, the development of environmentally friendly, industrially and economically viable surface treatments is performed. In this work, substrate/coating systems developed by HiPIMS process are studied. The objective is to understand and characterize in detail the role of the different interfaces encountered in these systems in order to optimize their resistance to corrosion in nitric acid and seawater. Firstly, the pre-treatment of the substrate by HiPIMS ion etching and its influence on a substrate/metallic bond coat system are studied. Three types of ion etching (Ar+, Ti+ and Zr+) are performed and lead to a modification of the substrate surface by implantation of the sputtered elements on the first nanometers. This leads to the modification of the chemical composition of the passive layer and improves the corrosion resistance of the metal ion-etched substrates in both studied environments. Then, a 200 nm-thick metallic bond coat (Ti/Zr) is deposited on the etched substrates to study the substrate/metallic bond coat interface. The beneficial effect of metal ion etching is still observed after deposition of the bond coat, suggesting that the metal species can act as a preferential nucleation site for metallic layer growth and probably promote a denser film. Secondly, a 5 µm-thick non-optimized substrate/metallic bond coat/oxide coating (TiO2/ZrO2) system is studied. The results indicate that Zr-based systems are promising for corrosion protection in our two study media.
author2 Dong Zhili
author_facet Dong Zhili
Chabanon, Angelique Annie
format Thesis-Doctor of Philosophy
author Chabanon, Angelique Annie
author_sort Chabanon, Angelique Annie
title Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS
title_short Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS
title_full Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS
title_fullStr Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS
title_full_unstemmed Understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering HiPIMS
title_sort understanding the interface constitution of a substrate/coating system deposited by cathodic magnetron sputtering hipims
publisher Nanyang Technological University
publishDate 2022
url https://hdl.handle.net/10356/156317
_version_ 1759857056955760640