Improvement of a-C:H film adhesion by intermediate layers and sputter cleaning procedures on stainless steel, alumina and cemented carbide
| Autor: | Jarmo Vihersalo, Riitta Zilliacus, Simo Varjus, Pertti Nenonen, Ulla Ehrnstén, Helena Ronkainen |
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| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
Materials science
Scanning electron microscope Metallurgy Sputter cleaning technology industry and agriculture chemistry.chemical_element Surfaces and Interfaces General Chemistry Adhesion engineering.material Condensed Matter Physics intermediate layers Surfaces Coatings and Films Amorphous solid Carbon film chemistry Coating Materials Chemistry Cemented carbide engineering Titanium coating adhesion |
| Zdroj: | Ronkainen, H, Vihersalo, J, Varjus, S, Zilliacus, R, Ehrnsten, U & Nenonen, P 1997, ' Improvement of a-C:H film adhesion by intermediate layers and sputter cleaning procedures on stainless steel, alumina and cemented carbide ', Surface and Coatings Technology, vol. 90, no. 3, pp. 190-196 . https://doi.org/10.1016/S0257-8972(96)03131-3 |
| ISSN: | 1879-3347 0257-8972 |
| Popis: | The adhesion of amorphous hydrogenated carbon (a-C:H) films deposited in a radio frequency (r.f.) plasma discharge on stainless steel, alumina and cemented carbide with different intermediate layers (Ni, Ti and TiC) and sputter cleaning procedures was studied. The composition of the carbon films and the intermediate layers as well as the interface between the coating and the substrate was determined by secondary ion mass spectroscopy (SIMS). The adhesion experiments were carried out using a scratch tester. Tested specimens were also studied by scanning electron microscopy (SEM) to reveal the morphology of the coatings and the scratches.Without any intermediate layer, the a-C:H coatings generally had insufficient adhesion to the substrate materials studied. For stainless steel and cemented carbide substrates, the TiC intermediate layer and, for alumina substrates, the titanium intermediate layer gave the best adhesion values evaluated by the scratch test. Also, the sputter cleaning of the substrates prior to deposition was necessary for sufficient adhesion of the coating. The intermediate layers also change the failure mode of the coating in the scratch test in some cases. |
| Databáze: | OpenAIRE |
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