Corrosion Resistance, EIS and Wettability of the Implants Made of 316 LVM Steel Used in Chest Deformation Treatment

Kajzer, Anita; Kajzer, W.; Gołombek, K.; Knol, M.; Dzielicki, Józef; Walke, W.

doi:10.1515/amm-2016-0130

Cited by 18 publications

(8 citation statements)

References 10 publications

(7 reference statements)

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“…However, metal biomaterials are characterized by limited biocompatibility in the human body. When subjected to synergistic influence of corrosive environments and mechanical factors they degrade [8,13]. Among the wide range of metal biomaterials, titanium alloys are becoming increasingly popular.…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Kajzer¹,

Jaworska²,

Jelonek³

et al. 2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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The aim of this study was to determine the influence of long-term exposure of Ringer’s solution on degradation of the anodically oxidated Ti6Al4V alloy coated with a biodegradable polymer coating. Polymeric coatings made of poly(glycolide-ε-caprolactone) – G-Cap and poly(glycolide- ε-caprolactone-lactide) – G-Cap-L were applied by a dip-coating method. Degradation was assessed on the basis of the results of pitting corrosion resistance and density of metal ions infiltrating to the solution. Studies were conducted for samples after 3, 6, 8, 10 and 12 weeks of exposure to the corrosive environment. In addition, topography of the surface of the polymer coating was assessed. As a result of potentiodynamic studies, the value of the polarization resistance and corrosion potential for the G-Cap and G-Cap-L coated samples were significantly decreased while simultaneous reduction of the density of metal ions infiltrating to the solution throughout the whole study period. There was also observed a faster degradation of the G-Cap coating compared to G-Cap-L, which showed local discontinuity after 12 weeks of exposure. The obtained results provide the basis for the development of polymeric coatings on surface of metal implants with predictable time / kinetics of degradation by selecting the composition of polymers while simultaneous limitation of metal ions infiltration into surrounding tissues.

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Section: Introductionmentioning

confidence: 99%

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Kajzer¹,

Jaworska²,

Jelonek³

et al. 2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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“…Thin layers based on TiO 2 are characterized by such properties as high transparency, stability (thermal, chemical), corrosion resistance and biocompatibility [11][12][13]. Literature data indicates, however, a number of undefined phenomena accompanying the production of TiO 2 films using the atomic layer deposition method on the surface of metal materials [14][15][16][17][18]. The selection of appropriate parameters for film formation and comprehensive studies showing the full characteristics of their behaviour under the conditions of implantation and prolonged contact with the tissue environment during the use of the implant are still unsolved problems.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of atomic layer deposition (ALD) TiO₂ layers on stainless steel substrates

Basiaga

Staszuk

Walke

et al. 2016

Materialwissenschaft Werkst

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Surface modification techniques play a major role in shaping the physicochemical properties of 316 LVM steel used for implants. The utilised methods of surface layer modification must ensure repeatability and uniformity of the physical and chemical properties. The structure and chemical composition of 316 LVM steel implants can be modified using various methods, among which anode oxidation and sol-gel methods are dominant. One of the more important aspects related to maintaining implants (e.g. vessel stents) is ensuring the maintenance of their geometric characteristics along their entire length, which some methods cannot guarantee. For this reason, the most appropriate technique of surface modification in this context appears to involve atomic layer deposition (ALD). Improved biocompatibility is also directly related to ensuring an appropriate set of mechanical properties for the deposited layer. Thus, the study attempted to assess the mechanical properties of the TiO 2 layers on a 316 LVM steel substrate, deposited using an atomic layer depositionbased method.Keywords: 316 LVM / TiO 2 / atomic layer deposition / scratch test / nanohardness / ellipsometry / atomic force microscopy (AFM)Oberflächenmodifizierungstechniken spielen eine wichtige Rolle bei der Gestaltung der physikalisch-chemischen Eigenschaften von 316 LVM Stahl für Implantate. Die eingesetzten Methoden der Oberflächenschichtmodifikation müssen Wiederholbarkeit und Einheitlichkeit der physikalischen und chemischen Eigenschaften sicherstellen. Die Struktur und die chemische Zusammensetzung des 316 LVM Stahlimplantats können durch verschiedene Verfahren, unter anderem durch Anodenoxidation und Sol-Gel-Verfahren, signifikant modifiziert werden. Einer der wichtigsten Aspekte zur Aufrechterhaltung der Funktionalität von Implantaten (z. B. Gefäß-prothesen) ist der Erhalt ihrer geometrischen Eigenschaften entlang der gesamten Länge, die einige der Methoden nicht garantieren können. Aus diesem Grund scheint die geeignetste Technik der Oberflächenmodifikation auf der Atomlagenabscheidung (ALD) zu basieren. Verbesserte Biokompatibilität ist auch in direktem Zusammenhang mit der Gewährleistung angemessener mechanischer Eigenschaften der abgeschiedenen Schicht zu sehen. Somit versucht diese Studie, die

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“…However, metal biomaterials are characterized by a relatively low biocompatibility. Combined with the environment of tissues, body fluids, and mechanical factors, metals undergo corrosive destruction [6][7][8]. Compared to other metal biomaterials, titanium alloys show good mechanical properties that are responsible for the transfer of static and dynamic loads.…”

mentioning

confidence: 99%

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

et al. 2020

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The inhibition of the corrosion of metal implants is still a challenge. This study aimed to increase the corrosion resistance of Ti6Al7Nb alloy implants through surface modification, including grinding, sandblasting, and anodic oxidation followed by the deposition of a polymer coating. The aim of the work was to determine the influence of biodegradable polymer coatings on the physico-chemical properties of a Ti6Al7Nb alloy used for short-term implants. Biodegradable coatings prepared from poly(glycolide-caprolactone) (P(GCap)), poly(glycolide ε-caprolactone-lactide) (P(GCapL)), and poly(lactide-glycolide) (PLGA) were applied in the studies. The dip-coating method with three cycles of dipping was applied. Corrosion resistance was assessed on the basis of potentiodynamic studies. The studies were carried out on samples after 30, 60, and 90 days of exposure to Ringer's solution. Surface topography, wettability, and cytotoxicity studies were also carried out. The degradation process of the base material was evaluated on the basis of the mass density of the metal ions released to the solution. The results indicated the influence of the coating type on corrosion resistance. In addition, a beneficial effect of the polymer coating on the reduction of the density of the released metal ions was found, as compared to the samples without polymer coatings. The obtained results provide basic knowledge for the development of polymer coatings enriched with an active substance. The presence of ciprofloxacin in the coating did not reduce the corrosion resistance of the metal substrate. Moreover, the cytotoxicity test using the extract dilution method demonstrated that the implants' coatings are promising for further in vitro and in vivo studies.The extensive use of biodegradable polymers in medical applications is mainly associated with the possibility of tailoring their physicochemical and mechanical properties. Controlled polymer degradation allows for their use as carriers of medicinal substances, ensuring drug release with regulated dynamics to obtain the expected therapeutic effects [5]. The mentioned group of biopolymers is characterized by an appropriate biocompatibility [4], and the achieved degradation products-mainly lactic, glycolic, and hydroxyhexanoic acids-are found to be neutral to the human organism and are metabolized in accordance the Krebs cycle [6]. The basic limitation of the use of biodegradable polymers relates to the mechanical properties that change over time. This feature may be disadvantageous in some applications, e.g., orthopedic implants. Treatment disorders can be observed as the implant weakens due to degradation processes. This can lead to repeated injuries. The consequence of this is the need to perform a revision surgery combined with the removal of an incompletely degraded and mechanically weakened implant and followed by its replacement with a new one. The revision surgery due to the progressive degradation of the polymer material may be associated with serious difficulties that lead to a much ...

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Corrosion Resistance, EIS and Wettability of the Implants Made of 316 LVM Steel Used in Chest Deformation Treatment

Cited by 18 publications

References 10 publications

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Mechanical properties of atomic layer deposition (ALD) TiO₂ layers on stainless steel substrates

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

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Corrosion Resistance, EIS and Wettability of the Implants Made of 316 LVM Steel Used in Chest Deformation Treatment

Cited by 18 publications

References 10 publications

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Corrosion resistance of Ti6Al4V alloy coated with caprolactone-based biodegradable polymeric coatings

Mechanical properties of atomic layer deposition (ALD) TiO2 layers on stainless steel substrates

Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy

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Mechanical properties of atomic layer deposition (ALD) TiO₂ layers on stainless steel substrates