Adhesion enhancement of DLC hard coatings by HiPIMS metal ion etching pretreatment
| Autor: | Raquel González-Arrabal, Jon M. Molina-Aldareguia, María Ujué González, Teresa C. Rojas, I. Fernandez-Martinez, H. Li, J.A. Santiago, Miguel A. Monclús, Juan Carlos Sánchez-López, A. Wennberg, Miguel Castillo-Rodríguez, V. Bellido-González, José Miguel García-Martín |
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| Přispěvatelé: | Comunidad de Madrid, Ministerio de Economía y Competitividad (España), Leverhulme Trust, European Consortium for the Development of Fusion Energy, Consejo Superior de Investigaciones Científicas (España), European Commission |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hard coatings 02 engineering and technology 01 natural sciences Metal 0103 physical sciences Materials Chemistry Interface structure Composite material High-resolution transmission electron microscopy 010302 applied physics Elemental composition Glow discharge HiPIMS Surfaces and Interfaces General Chemistry Sputter deposition 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Surfaces Coatings and Films Diamond-like carbon (DLC) visual_art visual_art.visual_art_medium Adhesion High-power impulse magnetron sputtering 0210 nano-technology High-speed steel |
| Zdroj: | Surface and Coatings Technology Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2018.04.090 |
| Popis: | Poor adhesion is a recurrent problem for the wider use of diamond-like carbon (DLC) coatings in industrial applications. In this work, we investigate the effectiveness of high-power impulse magnetron sputtering (HiPIMS) metal ion etching to improve the adhesion of DLC coatings on high speed steel substrates. The influence of HiPIMS pretreatment parameters, the metal ion selection for the process and the addition of bonding layers on the adhesion properties were studied. Daimler-Benz and nanoscratch test methods were used to evaluate the adhesion. The elemental composition, morphology and microstructure of the samples were evaluated by EELS, SEM, AFM and HRTEM. In general, samples pretreated with HiPIMS metal ion etching withstand larger critical loads than those pretreated by conventional Ar+ glow discharge and bonding layers. The pretreatment is proven to be very effective at removing surface contaminants and providing a gradual interface. The selection of Cr over Ti contributes to a significant improvement on the adhesion due to the reduction of the oxygen level at the interface thus ensuring an optimal coating-substrate contact and a more compliant structure, which prevents the delamination failure. The research leading to these results has received funding from Madrid region under programme S2013/MIT-2775, DIMMAT project. Financial support from MINECO under projects (RADIAFUS IV ENE2015-70300-C3-3-R, MAT2014-59772-C2-1-P, MAT2015-69035-REDC FUNCOAT+), Leverhulme International Network Grant (CARBTRIB) and EUROfusion Consortium under project AWP15-ENR-01/CEA-02 are also acknowledged, as well as the service from the X-SEM Laboratory at IMN under project CSIC13-4E-1794 with support from EU (FEDER, FSE). |
| Databáze: | OpenAIRE |
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