Electrodeposition of diamond-like carbon films on titanium alloy using organic liquids: Corrosion and wear resistance

► The electrodeposition may be conducted at room temperature. ► The DLC films have good resistance to corrosion in saline environments. ► The films have lower coefficient of friction than the uncoated substrate. ► The abrasive wear protection is evident in coated systems. Diamond-like carbon (DLC) f...

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Bibliographic Details
Published in:	Applied surface science Vol. 263; pp. 18 - 24
Main Authors:	Falcade, Tiago, Shmitzhaus, Tobias Eduardo, dos Reis, Otávio Gomes, Vargas, André Luis Marin, Hübler, Roberto, Müller, Iduvirges Lourdes, de Fraga Malfatti, Célia
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 15-12-2012 Elsevier
Subjects:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Corrosion Cross-disciplinary physics: materials science; rheology DLC Electrodeposition Exact sciences and technology Physics Ti6Al4V Wear Electrodeposition DLC Corrosion Wear Ti6Al4V Corrosion resistance Liquid state Titanium alloys Diamonds Wear resistance Carbon Film growth
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Summary:	► The electrodeposition may be conducted at room temperature. ► The DLC films have good resistance to corrosion in saline environments. ► The films have lower coefficient of friction than the uncoated substrate. ► The abrasive wear protection is evident in coated systems. Diamond-like carbon (DLC) films have been studied as coatings for corrosion protection and wear resistance because they have excellent chemical inertness in traditional corrosive environments, besides presenting a significant reduction in coefficient of friction. Diamond-like carbon (DLC) films obtained by electrochemical deposition techniques have attracted a lot of interest, regarding their potential in relation to the vapor phase deposition techniques. The electrochemical deposition techniques are carried out at room temperature and do not need vacuum system, making easier this way the technological transfer. At high electric fields, the organic molecules polarize and react on the electrode surface, forming carbon films. The aim of this work was to obtain DLC films onto Ti6Al4V substrate using as electrolyte: acetonitrile (ACN) and N,N-dimethylformamide (DMF). The films were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), Raman spectroscopy, potentiodynamic polarization and wear tests. The results show that these films can improve, significantly, the corrosion resistance of titanium and its alloys and their wear resistance.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2012.08.052