Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging
A PVD coating is often applied on the surface of metallic alloys to improve their high-temperature resistance. In the present work, a thin titanium layer (1.2 µm) was deposited by PVD on the surface of a stainless steel substrate before high-temperature exposure (800 °C in ambient air). The underlyi...
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MDPI AG
2022-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/12/1732 |
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| author | Maria-Rosa Ardigo-Besnard Aurélien Besnard Galy Nkou Bouala Pascal Boulet Yoann Pinot Quentin Ostorero |
| author_facet | Maria-Rosa Ardigo-Besnard Aurélien Besnard Galy Nkou Bouala Pascal Boulet Yoann Pinot Quentin Ostorero |
| author_sort | Maria-Rosa Ardigo-Besnard |
| collection | DOAJ |
| description | A PVD coating is often applied on the surface of metallic alloys to improve their high-temperature resistance. In the present work, a thin titanium layer (1.2 µm) was deposited by PVD on the surface of a stainless steel substrate before high-temperature exposure (800 °C in ambient air). The underlying idea is that metallic Ti converts into Ti oxide (TiO<sub>2</sub>) during high-temperature aging at 800 °C, thereby slowing down the substrate oxidation. The stability of the coating with and without substrate pre-oxidation was investigated. Morphological, structural, and chemical characterizations were performed and completed by simulation of the film growth and measurement of the mechanical state of the film and the substrate. In the case of the sample that was not pre-oxidized, the oxidation of the steel was slowed down by the TiO<sub>2</sub> scale but spallation was observed. On the other hand, when the steel was pre-oxidized, TiO<sub>2</sub> provided more significant protection against high-temperature oxidation, and spalling or cracking did not occur. A combination of different kinds of stress could explain the two different behaviors, namely, the mechanical state of the film and the substrate before oxidation, the growing stress, and the thermal stress occurring during cooling down. |
| first_indexed | 2024-03-09T17:09:57Z |
| format | Article |
| id | doaj.art-04c9c64043544b59b9f606e4f2a2a8ac |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T17:09:57Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-04c9c64043544b59b9f606e4f2a2a8ac2023-11-24T14:10:00ZengMDPI AGCrystals2073-43522022-12-011212173210.3390/cryst12121732Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature AgingMaria-Rosa Ardigo-Besnard0Aurélien Besnard1Galy Nkou Bouala2Pascal Boulet3Yoann Pinot4Quentin Ostorero5Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, BP 47870, 21078 Dijon, FranceArts et Metiers Institute of Technology, LaBoMaP, Université Bourgogne Franche-Comté, HESAM Université, 71250 Cluny, FranceArts et Metiers Institute of Technology, LaBoMaP, Université Bourgogne Franche-Comté, HESAM Université, 71250 Cluny, FranceInstitut Jean Lamour, UMR CNRS 7198, Université de Lorraine, 54000 Nancy, FranceArts et Metiers Institute of Technology, LaBoMaP, Université Bourgogne Franche-Comté, HESAM Université, 71250 Cluny, FranceLaboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, BP 47870, 21078 Dijon, FranceA PVD coating is often applied on the surface of metallic alloys to improve their high-temperature resistance. In the present work, a thin titanium layer (1.2 µm) was deposited by PVD on the surface of a stainless steel substrate before high-temperature exposure (800 °C in ambient air). The underlying idea is that metallic Ti converts into Ti oxide (TiO<sub>2</sub>) during high-temperature aging at 800 °C, thereby slowing down the substrate oxidation. The stability of the coating with and without substrate pre-oxidation was investigated. Morphological, structural, and chemical characterizations were performed and completed by simulation of the film growth and measurement of the mechanical state of the film and the substrate. In the case of the sample that was not pre-oxidized, the oxidation of the steel was slowed down by the TiO<sub>2</sub> scale but spallation was observed. On the other hand, when the steel was pre-oxidized, TiO<sub>2</sub> provided more significant protection against high-temperature oxidation, and spalling or cracking did not occur. A combination of different kinds of stress could explain the two different behaviors, namely, the mechanical state of the film and the substrate before oxidation, the growing stress, and the thermal stress occurring during cooling down.https://www.mdpi.com/2073-4352/12/12/1732physical vapor depositionpre-oxidationcoating adhesiontitaniumferritic stainless steel |
| spellingShingle | Maria-Rosa Ardigo-Besnard Aurélien Besnard Galy Nkou Bouala Pascal Boulet Yoann Pinot Quentin Ostorero Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging Crystals physical vapor deposition pre-oxidation coating adhesion titanium ferritic stainless steel |
| title | Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging |
| title_full | Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging |
| title_fullStr | Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging |
| title_full_unstemmed | Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging |
| title_short | Effect of Pre-Oxidation on a Ti PVD Coated Ferritic Steel Substrate during High-Temperature Aging |
| title_sort | effect of pre oxidation on a ti pvd coated ferritic steel substrate during high temperature aging |
| topic | physical vapor deposition pre-oxidation coating adhesion titanium ferritic stainless steel |
| url | https://www.mdpi.com/2073-4352/12/12/1732 |
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