Abstract

The effects of pulsed microwave discharges on the deposition and properties of a set of polycrystalline diamond films are investigated by varying the duty cycle at a fixed pulse frequency and keeping constant the peak microwave power at 1250 W, the substrate temperature and the final film thickness. The deposition polycrystalline diamond films obtained from highly diluted CH(4) (1% CH(4) in H(2)) gas mixtures was monitored by pyrometric interferometry technique. This analysis evidences that, in order to obtain the same thickness, the nucleation/deposition times and the process rates increase and decrease, respectively, by decreasing the pulse duration. Moreover, the influence of the variations of duty cycle on the deposition rates, the surface morphology, the optical properties (refractive index and extinction coefficient) and the crystallite orientations of the polycrystalline diamond films is investigated.

Autore Pugliese

• Giannini Cinzia , Cicala Grazia

Tutti gli autori

• G. Cicala; R. Brescia; M.A. Nitti; A. Romeo; D. Altamura; C. Giannini; M. Capitelli; P. Spinelli; S. Schutzmann

Titolo volume/Rivista

Surface & coatings technology

Anno di pubblicazione

2010

ISSN

0257-8972

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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