Open AccessMECHANICAL PROPERTIES OF Cr-DLC LAYERS PREPARED BY HYBRID LASER TECHNOLOGY
Author(s) -
Petr Písařík,
M. Jelı́nek,
Jan Remsa,
Zdeněk Tolde
Publication year - 2017
Publication title -
acta polytechnica ctu proceedings
Language(s) - English
Resource type - Journals
ISSN - 2336-5382
DOI - 10.14311/app.2017.8.0020
Subject(s) - materials science , diamond like carbon , nanoindentation , chromium , sputter deposition , carbon fibers , titanium , layer (electronics) , adhesion , pulsed laser deposition , metallurgy , doping , composite material , sputtering , nanotechnology , thin film , optoelectronics , composite number
Diamond like carbon (DLC) layers have excellent biological properties for use in medicine for coating implants, but poor adhesion to biomedical alloys. The adhesion can be improved by doping the DLC layer by chromium, as described in this article. Chromium doped diamond like carbon layers (Cr‑DLC) were deposited by hybrid deposition system using KrF excimer laser and magnetron sputtering. Carbon and chromium contents were determined by wavelength dispersive X-ray spectroscopy. Mechanical properties were studied by nanoindentation. Hardness and reduced Young's modulus reached 31.2 GPa and 271.5 GPa, respectively. Films adhesion was determined by scratch test and reached 19 N for titanium substrates. Good adhesion to biomedical alloys and high DLC hardness will help to progress in the field of implantology.