Surface-enhanced Raman spectroelectrochemical studies of corrosion films on implant Co-Cr-Mo alloy in biosimulating solutions

Li, Ying-Sing; Wang, Kang; He, Peixin; Huang, Boji; Kovacs, P

doi:10.1002/(sici)1097-4555(199902)30:2<97::aid-jrs352>3.0.co;2-x

Cited by 54 publications

(39 citation statements)

References 27 publications

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“…The general shape of the polarisation curve for the bare alloy is similar to that of pure chromium. It has been previously demonstrated that the passive film is composed of chromium and/or cobalt species such as Co(OH) 2 and Cr 2 O 3 , which is partially converted to Cr(OH) 3 . 2 The deposition of the hybrid coating decreases the passive current density for all the studied coatings.…”

Section: In Vitro Electrochemical Assaysmentioning

confidence: 98%

“…The main corrosion products, CoO and Cr 2 O 3 , may react with water to form Co(OH) and Cr(OH) 3 . 2 Cell culture has demonstrated that chromium species can stimulate osseous resorption and necrosis of periprosthetic tissue. 3 Titanium alloys are employed for orthopaedic implants due to their excellent combination of biocompatibility, corrosion resistance and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Sol–gel coatings for protection and bioactivation of metals used in orthopaedic devices

et al. 2004

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The aim of this work is the production and characterisation of sol-gel coatings for protection and bioactivation of metals used as standard surgical implant materials, such as stainless steel 316 L (ASTM F138), Co based alloys (ASTM F75) and titanium alloy Ti-6Al-4V (ASTM F67). These films should both prevent degradation of the substrates by wear or corrosion, and bioactivate the material for inducing the formation of a hydroxyapatite (HA) rich layer onto the material surface, thereby permitting a natural bonding to living tissues. Formation of HA layers can be observed on performing in vitro tests by soaking the material in simulated body solutions. The work describes the development of coatings containing bioactive glass and glass-ceramic particles in hybrid methyl-triethoxysilane (MTES) and tetraethylorthosilicate (TEOS) acidic sol, applied by dip-coating to surgical alloys, AISI 316 L, ASTM F75 and ASTM 67, with the aim of accomplishing both high corrosion resistance of the metal in the body environment and adhesion of the implant to the surrounding tissue. The performance of the coated metal was evaluated in vitro by electrochemical techniques including potentiodynamic polarisation curves and electrochemical impedance spectroscopy, to follow the formation of hydroxyapatite on the surface, as well as the in vitro release of ions by plasma atomic emission spectroscopy (ICP-MS) after up to one year of immersion. In vivo behaviour was evaluated by subcutaneous tests and endomedullar implantation in Hokaido rats to study possible rejection reactions and natural bonding to living tissue.

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Section: In Vitro Electrochemical Assaysmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Sol–gel coatings for protection and bioactivation of metals used in orthopaedic devices

et al. 2004

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“…These solutions include simple isotonic saline 0.9% NaCl [85][86][87] to phosphate buffer saline [67,[88][89][90][91]], ringer's solution, and hanks solution [92][93][94][95]. Ionic solutions similar to body fluids require the addition of biomolecules such as proteins, phospholipids, and glycoproteins.…”

Section: Corrosion Of Cocrmo Implantsmentioning

confidence: 99%

The Microstructure and the Electrochemical Behavior of Cobalt Chromium Molybdenum Alloys from Retrieved Hip Implants

Emerson¹

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“…Metikos et al [85] demonstrated that the corrosion behaviour of the passive alloy is determined by the presence of Cr although its corrosion resistance is higher due to the beneficial effect of the Mo on the passivity. According to Li et al [74], Mo in the alloy does not react with the electrolyte since the passive film (composed by Cr and Co species) protects the underlying Mo from further oxidation. They also observed that at lower potentials the Cr species play major role in the passivation of the alloy while at higher potentials Co species take on these roles.…”

Section: State Of the Artmentioning

confidence: 99%

“…Electrochemical quartz crystal microbalance permits to measure the mass variation on the interface biomaterial/electrolyte together with the electrochemical measurements. Thus, the electrochemical behaviour of the alloy can be analyzed by the combination of all these techniques together Surface Analysis (composition of the oxide film) [43,65,74,75,78,80,82]. …”

Section: State Of the Artmentioning

confidence: 99%

Study of the degradation mechanisms of the CoCrMo biomedical alloy in physiological media by electrochemical techniques and surface analysis

Vidal¹

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A mis padres y a mi hermano por estar siempre ahí Agradecer esta Tesis a toda esa gente que durante estos años ha compartido grandes momentos conmigo… En primer lugar agradecérsela a mi directora, amiga y muchas de las veces hasta madre ANNA IGUAL MUÑOZ. Gracias no sólo por enseñarme todo lo que sé si no por transmitirme en todos los momentos la motivación por lo que hacemos y seguir adelante. Por ese proyecto que empezamos juntos hace tanto tiempo y del que me siento tan orgulloso. Me llevo un gran recuerdo de todos esos momentos vividos juntos (que no son pocos). Gracias por enseñarme muchas de las veces a cómo afrontar las cosas…. te deseo lo mejor, ¡te lo mereces! Al Ministerio de Educación y Ciencia por su ayuda a través del financiamiento en el proyecto PROFIT CIT 300100-2007-0049 y de la Beca Predoctoral de Formación de Personal Universitario AP2007-01243 y al Ministerio de Ciencia e Innovación por el proyecto MAT 2011-22481. Asimismo, agradecer al Ministerio por la financiación de las dos estancias en Suiza en el Institut des Matériaux de la EPFL (Lausanne) gracias a la cual la presente Tesis Doctoral opta a la mención internacional.Agradecerle también esta Tesis a mi supervisor de la estancia en Suiza, STEFANO MISCHLER. Gracias por la acogida, por la manera de pensar, por todo lo aprendido pero, sobre todo, por afrontar todo siempre con gran alegría. ¡Eres admirable! Gracias a todo el grupo IEC. Gracias a vuestra ayuda ha sido mucho más fácil llevar esto a cabo. En especial a mis compañeras con los que empecé esta aventura, VIR y LUPITA, hasta los que me habéis acompañado en el final, CÉSAR, JORDI, TEPE y RAMÓN. ¡Gracias por todos esos grandes momentos! A ISAAC, mi hermano, compañero, confidente,… con el que hace mucho tiempo empezamos y aún después de tantos años seguimos juntos. Lo peor de terminar la Tesis será separarnos, pero te deseo lo mejor en esta nueva etapa que viene. ¡Vales muchísimo! ¡Gracias por todo y mucha suerte! Al departamento de Ingeniería Química y Nuclear, en especial a mis tías ALICIA, ISABEL y MARIA de las que me llevo un gran recuerdo.Al grupo Tribology -Materials, Surfaces & Interfaces por su gran acogida y hacerme uno más desde el primer momento. ANABEL, NIKITAS, NIKOLA, NURIA, PIERRE y toda la gente extraordinaria con la que he compartido mis estancias en Suiza. A mis amigos BRAD, EDGAR, EVELINE, JAVI y LUIZ. En especial a SANDRA, por cuidarme tanto… me llevo una amiga para toda la vida. ¡Gracias por todo! Agradecer a toda mi familia, en especial a mi MADRE, PADRE y a mi hermano ALBERTO. Por todos esos momentos, por aguantarme en los mejores y en los peores momentos, por ser siempre un grandísimo apoyo, por aceptar siempre todas las decisiones que he tomado en mi vida. ¡Os admiro! Y a esa nueva incorporación, ESTEFANIA, que te tengo tanto cariño.Y por último, que no menos importante, a todo mi grupo de amigos en especial a ALBERTO, DAVID, DIANA, ELENITA, ESTEBAN, GIUSEPPE, ISA, JOSÉ, JUAN y LAURA por todos esos grandes momentos, por estar siempre tan unidos, por ser siempre s...

show abstract

Surface-enhanced Raman spectroelectrochemical studies of corrosion films on implant Co-Cr-Mo alloy in biosimulating solutions

Cited by 54 publications

References 27 publications

Sol–gel coatings for protection and bioactivation of metals used in orthopaedic devices

Sol–gel coatings for protection and bioactivation of metals used in orthopaedic devices

The Microstructure and the Electrochemical Behavior of Cobalt Chromium Molybdenum Alloys from Retrieved Hip Implants

Study of the degradation mechanisms of the CoCrMo biomedical alloy in physiological media by electrochemical techniques and surface analysis

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