Nickel carbide films obtained by vacuum-arc plasma deposition. Effects of ion bombardment

Author

Pavelescu, D. ; Braic, M. ; Balaceanu, M. ; Vladescu, A. ; Zoita, C.N. ; Feraru, I. ; Braic, V.

Author_Institution

Univ. Politeh. of Bucharest, Bucharest, Romania

fYear

2010

fDate

Aug. 30 2010-Sept. 3 2010

Firstpage

483

Lastpage

485

Abstract

The paper examines the effects of ion bombardment flux (j_i) on film characteristics, under the conditions when ion energy (E_i) and the ratio of the ion flux to the flux of deposited atoms (j_i/j_a) were kept constant, considering nickel carbide films deposited on Si(100) and C45 steel substrates by the cathodic arc method in a CH₄+Ar mixture. The substrate current density was varied from 2.7 to 5.1 mA/cm² by using either one or two cathodes. The coatings were investigated in terms of elemental and phase composition, chemical bondings, texture, residual stress, hardness and tribological performance. The experimental results showed that film crystallinity, hardness, friction and wear resistance of the NiC coatings improved at increased ion bombardment intensity.

Keywords

bonds (chemical); carbon steel; coatings; current density; friction; internal stresses; ion beam effects; ion-surface impact; nickel compounds; plasma deposition; texture; thin films; wear resistance; C45 steel substrate; CH₄+Ar mixture; FeCCrJk; NiC; Si; Si(100) substrate; cathodic arc method; chemical bondings; coatings; deposited atoms; film crystallinity; friction; hardness; ion bombardment effects; ion bombardment intensity; ion energy; ion flux; nickel carbide films; phase composition; residual stress; substrate current density; texture; tribology; vacuum-arc plasma deposition; wear resistance; Carbon; Cathodes; Coatings; Films; Friction; Nickel; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum (ISDEIV), 2010 24th International Symposium on

Conference_Location

Braunschweig

ISSN

1093-2941

Print_ISBN

978-1-4244-8367-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2010.5625832

Filename

5625832