Chromium-doped DLC for implants prepared by laser-magnetron deposition

0456476 - FZÚ 2016 RIV NL eng J - Journal Article
Jelínek, Miroslav - Kocourek, Tomáš - Zemek, Josef - Mikšovský, Jan - Kubinová, Šárka - Remsa, Jan - Kopeček, Jaromír - Jurek, Karel
Chromium-doped DLC for implants prepared by laser-magnetron deposition.
Materials Science & Engineering C-Materials for Biological Applications. Roč. 46, Jan (2015), 381-386. ISSN 0928-4931. E-ISSN 1873-0191
R&D Projects: GA ČR(CZ) GA13-33056S; GA MŠMT(CZ) LO1309
Institutional support: RVO:68378271 ; RVO:68378041
Keywords : DLC * chromium * hybrid PLD * adhesion * antibacterial properties * toxicity
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.420, year: 2015

Diamond-like carbon (DLC) thin films are frequently used for coating of implants. The problem of DLC layers lies in bad layer adhesion to metal implants. Chromium is used as a dopant for improvement of adhesion of DLC films. DLC and Cr-DLC layers were deposited on silicon, Ti6Al4V and CoCrMo substrates by a hybrid technology using combination of pulsed laser deposition (PLD) and magnetron sputtering. The topology of layers was studied using SEM, AFM and mechanical profilometer. Carbon and chromium content and concentration of trivalent and toxic hexavalent chromium bonds were determined by XPS and WDS. It follows from the scratch tests that Cr doping improved adhesion of DLC layers. Ethylene glycol, diiodomethane and deionized water were used to measure the contact angles. The surface free energy (SFE) was calculated. The antibacterial properties were studied using Pseudomonas aeruginosa and Staphylococcus aureus bacteria.
Permanent Link: http://hdl.handle.net/11104/0256993