Preparation and characterization of biocompatible Nb-C coatings

被引：35
|
作者：
Braic, M. [1 ]
Braic, V. [1 ]
Balaceanu, M. [1 ]
Vladescu, A. [1 ]
Zoita, C. N. [1 ]
Titorencu, I. [2 ,3 ]
Jinga, V. [2 ]
Miculescu, F. [4 ]
机构：
[1] Natl Inst Optoelect, Magurele, Romania
[2] Petru Poni Inst Macromol Chem, R-6600 Iasi, Romania
[3] Inst Cellular Biol & Pathol Nicolae Simionescu, Bucharest, Romania
[4] Univ Politehn Bucuresti, Bucharest, Romania
来源：
THIN SOLID FILMS | 2011年 / 519卷 / 12期
关键词：
NbC coatings; Magnetron sputtering; Structure; Corrosion resistance; Cell viability; THIN-FILMS; CYTOTOXICITY; CORROSION; IMPLANTS; ALLOYS; XPS;
D O I：
10.1016/j.tsf.2011.01.193
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nb-C composite films, obtained by DC magnetron sputtering method, were investigated as possible candidates for the protective layers used in medical implants. Coatings of different carbon/niobium ratios were prepared and analyzed for elemental and phase composition, crystallographic structure, texture, corrosion behavior, and cell viability. The coating with the highest C/Nb ratio (approximate to 1.9) was found to have a nanocomposite structure, in which NbC nanocrystalline phase coexists with an amorphous a-C one. The coated samples exhibited an improved corrosion resistance as compared with the Ti alloy. Cell viability measurements proved that human osteosarcoma cells are adherent to the coating surfaces, the highest viability being found for the film with the highest carbon content. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：4064 / 4068
页数：5
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