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Stefano Mischler

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Publications associées (90)

Adsorption of BSA on Passivated CoCrMo PVD Alloy: An EQCM and XPS Investigation

Stefano Mischler, Anna Neus Igual Muñoz

Adsorption of Bovine Serum Albumin (BSA) on an anodically passivated CoCrMo biomedical alloy has been studied using the Electrochemical Quartz Crystal Microbalance (EQCM) in phosphate buffer solution at 37 degrees C. CoCrMo layers were deposited on the qua ...

Electrochemical Society2014

In-vivo condition monitoring of metallic implants by electrochemical techniques

Stefano Mischler, Eric Meurville

The invention relates to a replacement metallic prosthesis to be implanted which contains means monitor its condition during use in order to allow an early detection of failure or insufficient functionality, wherein said means comprise implanted sensors an ...

2013

Mechanical and chemical mechanisms in the tribocorrosion of a Stellite type alloy

Stefano Mischler, Marco Cantoni

The tribocorrosion of a Stellite 21 type alloy sliding against alumina in sulfuric acid was investigated in order to identify relevant degradation mechanisms. Tribocorrosion tests were performed using a reciprocating motion pin-on-plate system operating un ...

Elsevier Science Sa2013

Wear of CoCrMo alloys used in metal-on-metal hip joints: A tribocorrosion appraisal

Stefano Mischler

A good biocompatibility, excellent mechanical properties and high corrosion resistance characterize CoCrMo alloys. Therefore they are widely used for artificial joints in biomedical implants. However, the degradation of the implants during service life lea ...

Elsevier2013

Tribocorrosion of Pulsed Plasma-Nitrided CoCrMo Implant Alloy

Stefano Mischler

In the present study, a forged CoCrMo (ISO 5832-12) has been subjected to pulsed plasma treatment in a N-2/H-2 atmosphere at low temperatures (below 500 A degrees C). This treatment resulted in the formation of a layer composed by dispersed chromium nitrid ...

Springer Verlag2013

Processing and tribology of thermoplastic polyurethane particulate composite materials

Stefano Mischler, Véronique Michaud, Basile Golaz, Samy Tétouani

The processing, mechanical and tribological properties of wax containing thermoplastic polyurethane–filler composites were studied for different weight ratios of graphite, TiO2, MoS2, and ZrO2 microparticles and SiO2 nanoparticles. The composites were comp ...

Wiley-Blackwell2012

Passivation of a CoCrMo PVD Alloy with Biomedical Composition under Simulated Physiological Conditions Studied by EQCM and XPS

Stefano Mischler

Kinetics of passive film growth on a CoCrMo biomedical alloy have been studied using the Electrochemical Quartz Crystal Microbalance technique (EQCM) in phosphate buffer solution at room temperature and 37 degrees C. CoCrMo layers were deposited on the qua ...

2012

Electrochemical Simulation of the Current and Potential Response in Sliding Tribocorrosion

Stefano Mischler

Valuable insights into the wear-corrosion behavior of metals, as well as into the tribocorrosion field through the development of simulation models of tribocorrosion experiments, can contribute in rationalizing wear-accelerated experiments and their open c ...

Springer Verlag2012

Mechanical and electrochemical deterioration mechanisms in the tribocorrosion of Al alloys in NaCl and in NaNO3 solutions

Stefano Mischler

Tribocorrosion of Al-Si-Cu-Mg alloys was investigated in 0.05 M NaCl and 0.1 M NaNO3 solutions under severe sliding and controlled electrochemical conditions. A simple galvanic coupling model was developed to analyze and quantitatively predict the evolutio ...

Elsevier2012

Tribo-electrochemical characterization of metallic biomaterials for total joint replacement

Stefano Mischler

Knee and hip joint replacement implants involve a sliding contact between the femoral component and the tibial or acetabular component immersed in body fluids, thus making the metallic parts susceptible to tribocorrosion. Micro-motions occur at points of f ...

Elsevier2012

Effect of the environment on wear ranking and corrosion of biomedical CoCrMo alloys

Stefano Mischler

The corrosion behaviour and the wear ranking of biomedical high carbon (HC) and low carbon (LC) CoCrMo alloys sliding against an alumina ball in four different simulated body fluids [NaCl and phosphate buffered solutions (PBS) with and without albumin] has ...

2011

Tribocorrosion behavior of beta titanium alloys in physiological solutions containing synovial components

Stefano Mischler

In this work, the tribocorrosion behavior of Ti-12.5Mo, Ti-13Nb-13Zr and Ti-29Nb-13Ta-4.6Zr beta titanium alloys which are candidate biomaterials for joint prostheses is studied against ultra high molecular weight polyethylene in Hank's balanced salt solut ...

2011

Influence of SiC reinforcement particles on the tribocorrosion behaviour of Al-SiCp FGMs in 0.05M NaCl solution

Stefano Mischler

The main aim of this work was to study and understand the influence of SiC particles on the corrosion and tribocorrosion of Al-matrix composite materials. For that, Al-SiCp functionally graded composites were produced by centrifugal casting and different S ...

2011

Fretting-corrosion behavior of beta titanium alloys in simulated synovial fluid

Stefano Mischler

Fretting-corrosion is a material degradation process resulting from the combined action of a corrosive environment and small displacement fretting wear. In this work, the fretting-corrosion behavior of Ti-12.5Mo, Ti-13Nb-13Zr, and Ti-29Nb-13Ta-4.6Zr, beta ...

2011

Effect of Al2Cu precipitates size and mass transport on the polarisation behaviour of age-hardened Al-Si-Cu-Mg alloys in 0.05 M NaCl

Stefano Mischler

The electrochemical behaviour of age-hardened Al-Si-Cu-Mg alloys was investigated in a 0.05 M NaCl solution under controlled mass transport conditions using a rotating disk electrode. This work aimed at getting better understanding of the effect of the all ...

2011

Influence of chelating agents on the tribocorrosion of tungsten in sulphuric acid solution

Didier Bouvet, Michel Declercq, Stefano Mischler, Jelena Stojadinovic

The corrosion and tribocorrosion of tungsten in 0.01 M H2SO4, without and with the presence of lactic acid and phosphoric acid as chelating agents was studied here. ...

2011

Dry wear and tribocorrosion mechanisms of pulsed plasma nitrided Ni-Cr alloy

Stefano Mischler

The dry wear and tribocorrosion behaviour of pulsed plasma treated and non-treated Ni-Cr alloys sliding against alumina at 15 N were investigated by using a reciprocating wear test rig equipped with an electrochemical cell. The pulsed plasma treatment prod ...

2011

EBSD, SEM and FIB characterisation of subsurface deformation during tribocorrosion of stainless steel in sulphuric acid

Stefano Mischler, Marco Cantoni, Emmanuelle Boehm Courjault

The tribocorrosion behaviour of a 304L stainless steel/alumina contact was investigated in sulphuric acid at two imposed potentials (cathodic and passive) The metal deformation below the surface was investigated by analyzing cross sections using secondary ...

2010

Electrophoretic deposition of functionalized polystyrene particles for TiO2 multi-scale structured surfaces

Stefano Mischler, Johann Michler

Titanium is an interesting material for biomedical implants thanks to its physical and chemical properties. In particular, TiO2 coatings with a surface characterized by micro-patterning combined with nano-topography are extremely attractive for orthopaedic ...

2010

Third body effects on friction and wear during the fretting of steel contacts

Stefano Mischler

Frettingwear proceeds through particle detachment from the contacting surfaces which, while trapped in the contact zone, can affect the frictional and wear response. Ball-on-flat fretting experiments were carried out between steel specimens under gross sli ...

Elsevier2010

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