---
res:
  bibo_abstract:
  - "The addition of Ag to amorphous carbon (a-C) films is highly effective in tailoring
    the tribo-mechanical properties and biocompatibility. For biomedical applications,
    Ag-containing a-C (a-C:Ag) represents a promising film material for improving
    the biofunctional surface properties of Ti-based alloys. In a sputtering process,
    a-C:Ag films, with Ag contents up to 7.5 at.%, were deposited with a chemically
    graded TixCy interlayer onto Ti6Al4V. The tribo-mechanical and biocompatible properties
    of a-C:Ag were evaluated. The influence of the Ag content on these properties
    was analyzed and compared to those of uncoated Ti6Al4V.\r\n\r\nRaman spectroscopy
    reveals that the amount of incorporated Ag does not induce significant structural
    changes in the disordered network, only a reduced number of vacancies and sp3-coordinated
    C bonds within the sp2-dominant a-C network is assigned to the films with high
    Ag concentration. With increasing Ag content, stresses, hardness, and elastic
    modulus decrease from (2.02 ± 0.07) to (1.15 ± 0.03) GPa, from (17.4 ± 1.5) to
    (13.4 ± 0.9) GPa, and from (171.8 ± 8.1) to (138.5 ± 5.8) GPa, respectively. In
    tribometer tests, the friction behavior against Al2O3 in lubricated condition
    with a simulated-body-fluid-based lubricant is not affected by the Ag concentration,
    but the Al2O3 counterpart wear is reduced for all a-C:Ag films compared to a-C.
    The friction against ultra-high-molecular-weight polyethylene (UHMWPE) decreases
    continuously with increasing Ag concentration and the counterpart wear is lower
    at higher Ag contents. Compared to a-C:Ag, Ti6Al4V demonstrates lower friction
    against UHMWPE and higher friction against Al2O3. The a-C:Ag films are not exposed
    to abrasion by Al2O3 or pronounced material transfer of UHMWPE. The hardness difference
    and chemical affinity between the friction partners are decisive for the tribological
    behavior of a-C:Ag. Compared to Ti6Al4V, the a-C:Ag films show antibacterial activity
    against Staphylococcus aureus, while the proliferation of osteoblast-like cells
    is reduced by Ag.@eng"
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Wolfgang
      foaf_name: Tillmann, Wolfgang
      foaf_surname: Tillmann
  - foaf_Person:
      foaf_givenName: Nelson Filipe
      foaf_name: Lopes Dias, Nelson Filipe
      foaf_surname: Lopes Dias
  - foaf_Person:
      foaf_givenName: Carlo
      foaf_name: Franke, Carlo
      foaf_surname: Franke
  - foaf_Person:
      foaf_givenName: David
      foaf_name: Kokalj, David
      foaf_surname: Kokalj
  - foaf_Person:
      foaf_givenName: Dominic
      foaf_name: Stangier, Dominic
      foaf_surname: Stangier
  - foaf_Person:
      foaf_givenName: Viviane
      foaf_name: Filor, Viviane
      foaf_surname: Filor
  - foaf_Person:
      foaf_givenName: Rafael Hernán
      foaf_name: Mateus-Vargas, Rafael Hernán
      foaf_surname: Mateus-Vargas
  - foaf_Person:
      foaf_givenName: Hilke
      foaf_name: Oltmanns, Hilke
      foaf_surname: Oltmanns
  - foaf_Person:
      foaf_givenName: Manfred
      foaf_name: Kietzmann, Manfred
      foaf_surname: Kietzmann
  - foaf_Person:
      foaf_givenName: Jessica
      foaf_name: Meißner, Jessica
      foaf_surname: Meißner
  - foaf_Person:
      foaf_givenName: Maxwell
      foaf_name: Hein, Maxwell
      foaf_surname: Hein
      foaf_workInfoHomepage: http://www.librecat.org/personId=52771
    orcid: 0000-0002-3732-2236
  - foaf_Person:
      foaf_givenName: Sudipta
      foaf_name: Pramanik, Sudipta
      foaf_surname: Pramanik
  - foaf_Person:
      foaf_givenName: Kay-Peter
      foaf_name: Hoyer, Kay-Peter
      foaf_surname: Hoyer
      foaf_workInfoHomepage: http://www.librecat.org/personId=48411
  - foaf_Person:
      foaf_givenName: Mirko
      foaf_name: Schaper, Mirko
      foaf_surname: Schaper
      foaf_workInfoHomepage: http://www.librecat.org/personId=43720
  - foaf_Person:
      foaf_givenName: Alexander
      foaf_name: Nienhaus, Alexander
      foaf_surname: Nienhaus
  - foaf_Person:
      foaf_givenName: Carl Arne
      foaf_name: Thomann, Carl Arne
      foaf_surname: Thomann
  - foaf_Person:
      foaf_givenName: Jörg
      foaf_name: Debus, Jörg
      foaf_surname: Debus
  bibo_doi: 10.1016/j.surfcoat.2021.127384
  dct_date: 2021^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0257-8972
  dct_language: eng
  dct_title: Tribo-mechanical properties and biocompatibility of Ag-containing amorphous
    carbon films deposited onto Ti6Al4V@
...