Pitting, crevice and galvanic corrosion of REX stainless-steel/CoCr orthopedic implant material

Reclaru, Lucien; Lerf, R.; Eschler, P.-Y.; Blatter, A.; Meyer, Jean‐Marc

doi:10.1016/s0142-9612(02)00055-8

Cited by 68 publications

(49 citation statements)

References 3 publications

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“…The corrosion of the in vivo implant materials may be the source of harmful material in the body and deterioration of the biomaterials [7]. CoCr, CrNi, and Ti are the most widely used materials in dental implants.…”

Section: Introductionmentioning

confidence: 99%

“…CoCr, CrNi, and Ti are the most widely used materials in dental implants. Among these are Ti alloys which are particularly popular due to their chemical inertia [8], mechanical strength [9], low toxicity and lightness [10], and excellent biocompatibility [7].…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported [7] that the surface film in the human body changes in thickness and composition with time. So, simulation of long-term exposure of implants using various electrochemical techniques could be a help for prediction of in vivo behavior.…”

Section: Introductionmentioning

confidence: 99%

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Galvanic corrosion of titanium-based dental implant materials

Arslan

Celikkan²,

Ornek

et al. 2008

J Appl Electrochem

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This paper describes an investigation of the corrosion behavior of Ti-based dental materials with Au, CrNi and CoCr in Ringer solution by the use of Tafel plots, Evans diagrams and EIS Nyguist diagrams. The galvanic potentials and currents obtained for various implant couples are as follows: For, Ti6Al4V/CrNi couple -0.030 V (Ag/AgCl (3 M NaCl)) and 7.94 lA cm -2 ; for Ti6Al4V/ CoCr couple -0.020 V (Ag/AgCl (3 M NaCl)) and 7.08 lA cm -2 ; for Ti6Al4V/Au couple -0.020 V (Ag/ AgCl (3 M NaCl)) and 5.62 lA cm -2 . The Ti6Al4V/Au couple was found to be the most suitable one against galvanic corrosion according to both the Tafel method and mixed potential theory. The corrosion behaviors of Ti6Al4V/CoCr and Ti6Al4V/CrNi couples were found to be similar.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Galvanic corrosion of titanium-based dental implant materials

Arslan

Celikkan²,

Ornek

et al. 2008

J Appl Electrochem

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“…At these occluded areas, the concentration of aggressive chloride ions, decrease in pH value, and depletion of oxygen can rapidly lead to activation of the surface. The reduction of the pH and the increase in the concentration of Cl − ions are two essential factors in the initiation and propagation of the crevice corrosion phenomenon [ 22 ]. This process could also take place in crevices, where the pH value becomes reduced due to the hydrolysis of dissolved and trapped metal cations [ 23 ].…”

Section: Common Corrosion Types Of Metallic Biomaterialsmentioning

confidence: 99%

“…Thus, these areas will act as anode and the environment of the cracks (crack-free region) will act as cathode. The interior crack pH will be decreased compared to the body pH and Cl − ion concentration [ 22 ]. Consequently, it is proposed that the cracks are considered as weak regions in the coating structure.…”

Section: Corrosion Of Coated Metallic Biomaterialsmentioning

confidence: 99%

Corrosion of Metallic Biomaterials

Dikici

Esen

Duygulu

et al. 2015

Springer Series in Biomaterials Science and Engineering

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Metallic materials have been used as biomedical implants for various parts of the human body for many decades. The physiological environment (body fl uid) is considered to be extremely corrosive to metallic surfaces; and corrosion is one of the major problems to the widespread use of the metals in the human body since the corrosion products can cause infections, local pain, swelling, and loosening of the implants. Recently, the most common corrosion-resistant metallic biomaterials are made of stainless steels and titanium and its alloys along with cobaltchromium-molybdenum alloys. It is well known that protective surface fi lms of the alloys play a key role in corrosion of the metallic implants. Key documents on the corrosion behavior of the metallic biomaterials in human body have been compiled under this chapter as a review. Keywords Metallic biomaterials • Corrosion • Physical body fl uid • Bioactive materials • Implant IntroductionThe main question is, "what is the most important property for a metallic biomaterial?" Clearly, the answer is biocompatibility . In addition, it is well known that corrosion is one of the major problems affecting the biocompatibility of orthopedic devices made of metals and alloys used as implants in the human body. Compared to other implants, metallic implants have excellent mechanical properties such as high elasticity, tensile strength, wear resistance, and machining.

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Hydroxyapatite‐coated magnesium implants with improved in vitro and in vivo biocorrosion, biocompatibility, and bone response

Kim

Lee

et al. 2013

J Biomedical Materials Res

108

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Magnesium and its alloys are candidate materials for biodegradable implants; however, excessively rapid corrosion behavior restricts their practical uses in biological systems. For such applications, surface modification is essential, and the use of anticorrosion coatings is considered as a promising avenue. In this study, we coated Mg with hydroxyapatite (HA) in an aqueous solution containing calcium and phosphate sources to improve its in vitro and in vivo biocorrosion resistance, biocompatibility and bone response. A layer of needle-shaped HA crystals was created uniformly on the Mg substrate even when the Mg sample had a complex shape of a screw. In addition, a dense HA-stratum between this layer and the Mg substrate was formed. This HA-coating layer remarkably reduced the corrosion rate of the Mg tested in a simulated body fluid. Moreover, the biological response, including cell attachment, proliferation and differentiation, of the HA-coated samples was enhanced considerably compared to samples without a coating layer. The preliminary in vivo experiments also showed that the biocorrosion of the Mg implant was significantly retarded by HA coating, which resulted in good mechanical stability. In addition, in the case of the HA-coated implants, biodegradation was mitigated, particularly over the first 6 weeks of implantation. This considerably promoted bone growth at the interface between the implant and bone. These results confirmed that HA-coated Mg is a promising material for biomedical implant applications.

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Pitting, crevice and galvanic corrosion of REX stainless-steel/CoCr orthopedic implant material

Cited by 68 publications

References 3 publications

Galvanic corrosion of titanium-based dental implant materials

Galvanic corrosion of titanium-based dental implant materials

Corrosion of Metallic Biomaterials

Hydroxyapatite‐coated magnesium implants with improved in vitro and in vivo biocorrosion, biocompatibility, and bone response

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