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

被引：53

作者：

Jelinek, Miroslav ^{[1
,2
]}

Kocourek, Tomas ^{[1
,2
]}

Zemek, Josef ^{[1
]}

Miksovsky, Jan ^{[1
,2
]}

Kubinova, Sarka ^{[3
]}

Remsa, Jan ^{[1
,2
]}

Kopecek, Jaromir ^{[1
]}

Jurek, Karel ^{[1
]}

机构：

[1] Inst Phys AS CR, Prague 18221 8, Czech Republic

[2] Czech Tech Univ, Fac Biomed Engn, Kladno 27201, Czech Republic

[3] Inst Expt Med ASCR, Prague 14220 4, Czech Republic

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2015年 / 46卷

关键词：

DI; Chromium; Hybrid PLD; Adhesion; Antibacterial properties; Toxicity; DIAMOND-LIKE CARBON; IMMERSION ION-IMPLANTATION; VACUUM-ARC DEPOSITION; MECHANICAL-PROPERTIES; THIN-FILMS; COATINGS; PLASMA; HEMOCOMPATIBILITY; BIOCOMPATIBILITY; ANTIBACTERIAL;

D O I：

10.1016/j.msec.2014.10.035

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

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, Ti6AI4V 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. The influence of SFE, hydrophobicity and surface roughness on antibacterial ability of doped layers is discussed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：381 / 386

页数：6

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