[Calcium-oxygen modified amorphous and nanocrystalline carbon layers as biomaterials].
Undoped and Ca-O-modified diamond-like carbon coatings were deposited by a direct current discharge. Hardness and Young's modulus of Ca-O-modified DLCs were reduced in comparison with the undoped DLC, but the adherence of the Ca-O-modified films is improved. Ca-O-modified DLCs have a higher fraction of nano-crystalline regions with carbon in sp2 hybridisation. In addition, an increased oxygen content and CaCO3 was identified in Ca-O-modified DLCs. While mouse fibroblasts of the type L929 attach and grow on unmodified diamond-like carbon coatings synthesized by the decomposition of hydrocarbon, the addition of CaO-H2O into the precursor gas improves the coatings biological acceptance by the cells.
Dorner-Reisel
A
A
Institut für Keramische Werkstoffe, TU Bergakademie Freiberg, Deutschland. dorner@ikw.tu-freiberg.de
Schürer
C
C
Nischan
C
C
Klemm
V
V
Irmer
G
G
Müller
E
E
D000818:Animals; D002118:Calcium; D002119:Calcium Carbonate; D020099:Coated Materials, Biocompatible; D003460:Crystallization; D018130:Diamond; D005347:Fibroblasts; D006801:Humans; D051379:Mice; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology; D010100:Oxygen; D019736:Prostheses and Implants; D013499:Surface Properties; D013525:Surgical Instruments
D020099:Coated Materials, Biocompatible; D018130:Diamond; D002119:Calcium Carbonate; D010100:Oxygen; D002118:Calcium