Nitriding of titanium disks and industrial dental implants using hollow cathode discharge

Alves, Clodomiro; Neto, Custódio Leopoldino Brito Guerra; Morais, G.H.S.; Silva, C.F. da; Hajek, V.

doi:10.1016/j.surfcoat.2004.10.009

Cited by 69 publications

(60 citation statements)

References 24 publications

(25 reference statements)

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“…Research in the field of low pressure plasma has gained emphasis, mainly due to to its versatility and the various results obtained in the modification of material physical-chemical properties 1 . However, large scale use is limited mainly because of the high cost of vacuum installations, and its restricted use on high vapor pressure materials such as living tissues 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of Variation in Distances Between Electrodes in Spectral DBD Plasma Excitation

Souza¹,

Neto²,

Queiroz³

et al. 2016

Mat. Res.

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Section: Introductionmentioning

confidence: 99%

Study of the Influence of Variation in Distances Between Electrodes in Spectral DBD Plasma Excitation

Souza¹,

Neto²,

Queiroz³

et al. 2016

Mat. Res.

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“…This happens because of the high rate of ionizing, since the electrons contained in plasma are successively reflected between the two cathodic surfaces [16]. Electrons are repulsed from the central cathode (that can be the sample in treatment) to the external cathodes.…”

Section: Discussionmentioning

confidence: 99%

Stem cells behaviour on titanium surface modificated by plasma

Sá¹,

Silva²,

Rocha³

et al. 2012

BDS

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Over the last decade, a considerable development of new technologies to the modification of dental implants has been observed contributing to reduce the healing process and their use in areas with low bone density. Among the new techniques, plasma nitriding has showed excellent results. In this study, a superficial modification of commercial pure titanium (Degree II), by using two different plasma treatments (planar and hollow cathode nitriding) was accomplished aiming at an optimization of the surface for biomedical applications. An evaluation of the chemical composition in all samples was carried out, in addition to a study of their roughness and texture. Then, stem cells were deposited onto these surfaces and a comparison among their properties and their biological behavior was accomplished. The results showed that the nitriding techniques produced significant changes in the superficial texture of the Ti samples. The roughness test presented better results in samples nitrided by hollow cathode technique. Statistically significant differences were found in the cell proliferation of samples nitrided by hollow cathode nitriding when compared to samples without treatment. The used techniques were, therefore, effective and directly influenced the characteristics of the titanium surface and consequently, the stem cell behavior.

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“…These features affect such functional properties as hardness, wear resistance, mechanical properties, biological properties and wettability. In order to modify the properties of biomaterials, different methods of surface treatment are used, ranging from electrochemical oxidation, thermal spraying, ion implantation, laser treatment (PLD), chemical vapour deposition (RFCVD, MWCVD), to hybrid and glow-discharge methods [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Selection of the appropriate method depends on the final application of the material, the implant's shape and the expected characteristics of the produced surface layers.…”

Section: Introductionmentioning

confidence: 99%

“…The surface layers formed are diffusive in nature and can be produced on complexly-shaped parts. They also possess titanium nitride (TiN) in the external zone, which is characterised by good biocompatibility and resistance to wear by friction [8,16,19,20]. Depending on the structure and surface topography of the layer, its biological properties, such as haemocompatibility, can be modified.…”

Section: Introductionmentioning

confidence: 99%

The Importance Of Surface Topography For The Biological Properties Of Nitrided Diffusion Layers Produced On Ti6Al4V Titanium Alloy

Wierzchoń¹,

Czarnowska²,

Morgiel³

et al. 2015

Archives of Metallurgy and Materials

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Diffusion nitrided layers produced on titanium and its alloys are widely studied in terms of their application for cardiac and bone implants. The influence of the structure, the phase composition, topography and surface morphology on their biological properties is being investigated. The article presents the results of a study of the topography (nanotopography) of the surface of TiN+Ti 2 N+αTi(N) nitrided layers produced in low-temperature plasma on Ti6Al4V titanium alloy and their influence on the adhesion of blood platelets and their aggregates. The TEM microstructure of the produced layers have been examined and it was demonstrated that the interaction between platelets and the surface of the titanium implants subjected to glow-discharge nitriding can be shaped via modification of the roughness parameters of the external layer of the TiN titanium nitride nanocrystalline zone.Keywords: Ti6Al4V titanium alloy, glow discharge assisted nitriding, surface topography, wettability, blood platelets Dyfuzyjne warstwy azotowane na tytanie i jego stopach są szeroko badane m. in. w aspekcie zastosowań na implanty kardiologiczne i kostne. Stąd też analizowany jest wpływ struktury składu fazowego, topografii i morfologii powierzchni na ich właściwości biologiczne. W artykule przedstawiono wyniki badań wpływu topografii (nanotopografii) powierzchni warstw azotowanych -TiN+Ti 2 N+αTi(N) wytwarzanych w niskotemperaturowej plazmie na stopie tytanu Ti6Al4V na adhezję płytek krwi i ich aglomeratów. Omówiono mikrostrukturę (TEM) wytwarzanych warstw i wykazano, że poprzez stan chropowatości powierzchni zewnętrznej strefy warstwy azotowanej -nanokrystalicznego azotku tytanu (TiN) można kształtować oddziaływanie płytek krwi z powierzchnią implantów tytanowych poddanych procesowi azotowania jarzeniowego.

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Nitriding of titanium disks and industrial dental implants using hollow cathode discharge

Cited by 69 publications

References 24 publications

Study of the Influence of Variation in Distances Between Electrodes in Spectral DBD Plasma Excitation

Study of the Influence of Variation in Distances Between Electrodes in Spectral DBD Plasma Excitation

Stem cells behaviour on titanium surface modificated by plasma

The Importance Of Surface Topography For The Biological Properties Of Nitrided Diffusion Layers Produced On Ti6Al4V Titanium Alloy

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