http://www.cnr.it/ontology/cnr/individuo/prodotto/ID57014

Raman spectroscopy characterization of diamond films on steel substrates with titanium carbide arc-plated interlayer (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Raman spectroscopy characterization of diamond films on steel substrates with titanium carbide arc-plated interlayer (Articolo in rivista) (literal)

Anno

2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.tsf.2006.07.164 (literal)

Alternative label

Riccardo Polini (a); Giorgio Mattei (b); Roberta Valle (c); Fabrizio Casadei (c) (2006)
Raman spectroscopy characterization of diamond films on steel substrates with titanium carbide arc-plated interlayer
in Thin solid films (Print)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Riccardo Polini (a); Giorgio Mattei (b); Roberta Valle (c); Fabrizio Casadei (c) (literal)

Pagina inizio

1011 (literal)

Pagina fine

1016 (literal)

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Proceedings of the 33rd International Conference on Metallurgical Coatings and Thin Films. (literal)

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http://www.sciencedirect.com/science/article/pii/S0040609006009011 (literal)

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515 (literal)

Rivista

Thin solid films (Rivista)

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fasc. (3). Elsevier. Proceedings of the 33rd International Conference on Metallurgical Coatings and Thin Films. (literal)

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3 (literal)

Note

Scopu (literal)

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(a) Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133 Roma, Italy (b) Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, ISC-CNR, sezione di Montelibretti, Area della Ricerca di Roma 1, C.P.: 10, 00016 Monterotondo Scalo, Roma, Italy (c) Centro Sviluppo Materiali S.p.A., Via di Castel Romano 100, 00128 Roma, Italy (literal)

Titolo

Raman spectroscopy characterization of diamond films on steel substrates with titanium carbide arc-plated interlayer (literal)

Abstract

Diamond chemical vapour deposition (CVD) on steel represents a difficult task. The major problem is represented by large diffusion of carbon into steel at CVD temperatures. This leads to very low diamond nucleation and degradation of steel microstructure and properties. Recent work [R. Polini, F. Pighetti Mantini, M. Braic, M. Amar, W. Ahmed, H. Taylor, Thin Solid Films 494 (2006) 116] demonstrated that well-adherent diamond films can be grown on high-speed steels by using a TiC interlayer deposited by the PVD-arc technique. The resulting multilayer (TiC/diamond) coating had a rough surface morphology due to the presence of droplets formed at the substrate surface during the reactive evaporation of TiC. In this work, we first present an extensive Raman investigation of 2 ?m, 4 ?m and 6 ?m thick diamond films deposited by hot filament CVD on TiC interlayers obtained by the PVD-arc technique. The stress state of the diamond was dependent on both the films thickness and the spatial position of the coating on the substrate. In fact, on the top of TiC droplets, the stress state of the diamond was much lower than that of diamond in flatter substrate areas. These results showed that diamond films deposited on rough TiC interlayers exhibited a wide distribution of stress values and that very large compressive stress exists in the diamond film grown on flat regions of steel substrates with a TiC interlayer. Diamond films could accommodate stresses as large as 10 GPa without delamination. (literal)

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