Chromium-doped diamond-like carbon films deposited by dual-pulsed laser deposition

Písařík, Petr; Jelı́nek, M.; Kocourek, T.; Zezulová, Marketa; Remsa, Jan; Jurek, K.

doi:10.1007/s00339-013-8206-1

Cited by 14 publications

(7 citation statements)

References 26 publications

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“…We preliminary studied Cr doped DLC layers earlier, using dual beam PLD [24,25]. In the present study we prepared Cr doped DLC layers using hybrid system in combination of magnetron sputtering and PLD.…”

Section: Doping Of Dlc Layersmentioning

confidence: 99%

“…K.J. Lesker) simultaneously sputtered chromium species [24]. To fabricate DLC with variable chromium content the repetition rate of laser varied from 3 Hz to 40 Hz -see Table 1.…”

Section: Depositionmentioning

confidence: 99%

“…The base vacuum of the coating system was 5 × 10 − 4 Pa. The films were deposited in argon ambient (0.25 Pa) [24][25][26][27][28][29]. The substrates were again RF cleaned in the chamber prior to deposition.…”

Section: Depositionmentioning

confidence: 99%

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

Jelínek

Kocourek

Zemek

et al. 2015

Materials Science and Engineering: C

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Section: Doping Of Dlc Layersmentioning

confidence: 99%

“…K.J. Lesker) simultaneously sputtered chromium species [24]. To fabricate DLC with variable chromium content the repetition rate of laser varied from 3 Hz to 40 Hz -see Table 1.…”

Section: Depositionmentioning

confidence: 99%

See 1 more Smart Citation

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

Jelínek

Kocourek

Zemek

et al. 2015

Materials Science and Engineering: C

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“…Dopants in DLC layers produce changes in hardness, coefficient of friction, resistance to wear, surface roughness, adhesion, and even biocompatibility and biological properties [13,14]. The scheme of typical dopants and supposed change of DLC properties is in Figure 1 [13].…”

Section: Introductionmentioning

confidence: 99%

MECHANICAL PROPERTIES OF Cr-DLC LAYERS PREPARED BY HYBRID LASER TECHNOLOGY

Písařík

Jelı́nek

Remsa

et al. 2017

APP

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Abstract. Diamond like carbon (DLC) layers have excellent biological properties for use in medicine for coating implants, but poor adhesion to biomedical alloys (titanium alloys, chromium alloys and stainless steel). 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 (deposition diamond like carbon -graphite target) and magnetron sputtering (deposition chromium -chromium target). Carbon and chromium contents were determined by wavelength dispersive X-ray spectroscopy. Chromium content of Cr DLC layers was 0, 1, 2, 4-5 and 15 17 at.%. The topology and roughness of layers were studied using atomic force microscopy. Roughness of chromium doped DLC layers was measured on Si substrates about 0.2-0.7 nm and on metallic substrates about 1-6 nm. Mechanical properties were studied by nanoindentation. Hardness and reduced Young s modulus were reduced with rising the Cr content. Hardness and reduced Young s modulus reached from 15.0 GPa to 31.2 GPa and from 172.7 to 271.5 GPa, respectively. Films adhesion was determined by scratch test and reached 19 N for titanium substrates and for highest Cr concentration. Good adhesion to biomedical alloys and high DLC hardness will help to progress in the field of implantology.

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“…The population density of Saos-2 cells was the highest in samples containing higher concentrations of chromium 7.7 and 10 at%. However, this seemingly positive cell behavior could be associated with the risk of dedifferentiation and oncogenic transformation of cells [11], [12].…”

Section: Cr: Dlc Prepared By Pld + Magnetron Sputteringmentioning

confidence: 99%

Doped and Multilayer Biocompatible Materials Prepared by Hybrid Laser Deposition

Jelı́nek¹,

Kocourek²,

Remsa³

et al. 2018

IJBBB

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Abstract:Hybrid laser technology for synthesizing doped, nanocomposite, single and multilayers of amorphous or nanocrystalline materials are presented. The technique use method of pulsed laser deposition (PLD) or combination of PLD with magnetron sputtering, radiofrequency discharges or two PLD running together. Examples of deposition and study of doped biocompatible materials as Cr: DLC, Ti: DLC, Ag: DLC, Ag: hydroxyapatite, and enhancement of sp3-DLC layers bonds by in situ ion gun bombardment are given.Key words: PLD, hybrid PLD, biocompatible coating, implants. IntroductionBiomaterials, i.e. natural or artificial materials designed for application in biotechnologies and medicine, are widely used for replacing irreversibly damaged tissues in the human body. Biomaterials have to meet the requirements for well-functioning and long-term durability of the implants, namely biocompatibility, good corrosion and fatigue resistance, wear resistance and biomechanical compatibility [1]. In many cases a single coating material alone cannot fulfil the technical requirements. To improve physical, mechanical and biocompatible properties of implant coatings, the layers can be doped (enriched) with other elements.The cheapest way for laser fabrication of doped biocompatible coating is to cover the rotating target material (matrix) with a piece of dopant material. But in present study of layers, multilayers and superlattices of doped biocompatible materials the focus is on increasing flexibility and range of deposition conditions by way of combining PLD with magnetron sputtering (MS), PLD with RF discharges, ion gun layers modification and on the combination of two simultaneously running PLD systems (dual PLD). The methods allow carefully study the influence of dopation on a large scale of dopants and to create nanocomposite biomaterials of new properties [2] Experiences with deposition of chromium, silver and titanium doped diamond-like carbon (DLC) and hydroxyapatite (HA) films and ferroelectric BaTiO3 multilayers for coating of metallic bone implants are presented. Layers of different dopants concentration and ferroelectric-based multilayers were prepared. Overwiev of our research in that direction and the results of physical and biomedical analysis are presented in summary. The doped and multilayer biocompatible coatings were prepared by PLD, PLD combined with radiofrequency discharges (RF), PLD with magnetron sputtering (MS), PLD with ion bombardment, and by dual PLD. The two KrF excimer lasers (LUMONICS PM 842, λ = 248 nm, τ = 20 ns and COMPexProTM 205 F, λ = 248 nm, τ = 20 ns) were used. (Fig. 1) The energy density of laser beam on the target ranged from 2 to 16 Jcm -2 , repetition rate of pulses were from 1 to 50 Hz, argon atmosphere pressure from 10 -4 Pa (vacuum) to 1 Pa. Thin layers of DLC were deposited on fused silica (FS), Si (100) or metallic substrates. The substrate deposition temperature for DLC films was T S = 20°C. The target-substrate distance (D T-S ) was 45 mm for PLD, 85 mm for MS, and 260 mm for ion bo...

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Chromium-doped diamond-like carbon films deposited by dual-pulsed laser deposition

Cited by 14 publications

References 26 publications

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

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

MECHANICAL PROPERTIES OF Cr-DLC LAYERS PREPARED BY HYBRID LASER TECHNOLOGY

Doped and Multilayer Biocompatible Materials Prepared by Hybrid Laser Deposition

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