Publications de Stefano Mischler

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In this study, we report results of the interaction of titanium (Ti) with human synovial fluids. A wide palette of electrochemical techniques was used, including open circuit potential, potentiodynamic methods, and electrochemical impedance. After the elec ...

Understanding the interactions between biomedical alloys and body fluids is of importance for the successful and safe performance of implanted devices. Albumin, as the first protein that comes in contact with an implant surface, can determine the biocompat ...

The tribocorrosion mechanisms of a Ti-Nb-Zr-Ta (TNZT) alloy rubbing against a zirconia ball in a Phosphate Buffered Solution (PBS) were analyzed by considering the mechanical and chemical interactions that lead to the material degradation. To understand th ...

In many deep geological repository (DGR) concepts for the storage of high-level radioactive waste, bentonite clay is planned to serve as a buffer material between the host rock and the canister. It is expected to serve both a chemical role (immobilization of radionuclides) and a biological one, the inhibition of microbial growth and activity. Sulfate reducing bacteria (SRB) are of particular concern due to the production of sulfide, a strong steel-corroding agent. It is conventionally assumed that microbial

DLC coatings are often deposited on Si and Cr based adhesion-promoting interlayers to mitigate stress at the DLC/substrate interface. Interlayers reduce the likelihood of mechanical coating delamination. However, their chemical stability at miniature DLC c ...

Tribocorrosion is a material degradation phenomenon resulting from interactive effects between wear and corrosion. It is commonly found in engineering applications (e.g. biomedical implants and marine equipment) which involve relative motion of contacting ...

Tribocorrosion of hydrogen-embrittled steel is a critical concern for materials, particularly used in applications involving high mechanical stress and corrosive conditions. Hydrogen uptake by steel structures, induced by an electrochemical process, can cause degradation of mechanical properties and induce cracks. It is widely known as hydrogen embrittlement. This study investigates the combined effects of mechanical wear and electrochemical corrosion on hydrogen-charged C45CE carbon steel, in the presence

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 ...

Aims Electrochemical properties of synovial fluid are variable among patients and can lead to implant corrosion, negatively impacting their longevity. The purpose of this study was to explore the relationships between electrochemical properties of synovial fluid of knee osteoarthritic (OA) patients undergoing total knee arthroplasty (TKA) and their clinical and demographic data. Methods Knee OA patients undergoing TKA were enrolled in this study, and samples of their synovial fluid were collected during sur

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 ...

Measuring the thermoelectric transport properties of a material is a prerequisite to determining its usefulness for application in waste heat recovery or cooling and the basis for devising improvement strategies. While well-established characterization met ...

Adsorption of calf serum organic matter from a phosphate-buffered solution was studied using the electrochemical quartz crystal microbalance with additional dissipation measurements. Two types of crystal surfaces were used: one rough with micrometer-range ...

Existing sliding tribocorrosion models have been developed for homogeneous passive metals such as stainless steel and pure metals. Many technical alloys contains however second phases, usually much harder than the metallic matrix, intended to provide bette ...

Pressurized water reactors (PWR) used for power generation are operated at elevated temperatures (280-300 degrees C) and under high pressure (120-150 bar). In addition to these harsh environmental conditions some components of the PWR assemblies are subjec ...

Electrodeposited composite coatings are produced by the ability to co-deposit particle reinforcements along with the metal from the galvanic bath suspension. Electro-co-deposition process has been extensively studied and developed to produce a wide range of composite coatings with desired properties. The inherent versatility of this process and the associated materials allows for its implementation across diverse industries—including automotive, electronics, micro-mechanical, and biomedical devices. Despite

This paper shows the preparation of a gold suspension containing carbon nanocapsules and their co-deposition from the colloidal galvanic bath on a nickel electrode to obtain gold/nanocapsules composite coatings. The incorporation of the nanocapsules was co ...

Normal micro-movements at the bone-implant interface originate fretting-corrosion processes, thus releasing wear debris from the bone and metallic devices and compromising the fixability of the implant. Titanium aluminum nitride (Ti1-xAlxN) coatings have b ...

The erosion mechanisms during abrasive waterjet (AWJ) machining have been examined for a variety of materials. However, no systematic study has considered the effect of the microstructure property relationship on the erosion mechanisms in metals. In this w ...

Silicon (Si) based implantable components are widely used to restore functionalities in the human body. However, there have been reported instances of Si corroding after only a few years of implantation. A key parameter often overlooked when assessing Si s ...

This study was initiated with the aim to assess the influence of boundary films on the tribologically induced metallurgical transformations and deformations of metals in lubricated contacts and their effect on wear. For this, the tribological behavior of a ...

Stefano Mischler

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The Electrochemical Behavior of Ti in Human Synovial Fluids

An Overview of Serum Albumin Interactions with Biomedical Alloys

Current and friction transients during tribocorrosion of a biomedical titanium alloy sliding against zirconia

Transient oxygen-driven microbial activity at the bentonite–host rock boundary

A methodology for characterizing the electrochemical stability of DLC coated interlayers and interfaces

Modeling tribocorrosion of passive metals - A review

Effect of hydrogen charging on the tribocorrosion performance of C45CE steel

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

More severe joint disease and lower patient oxygenation are associated with less corrosive in vivo synovial fluid in patients with knee osteoarthritis

Tribo-electrochemical characterization of metallic biomaterials for total joint replacement

Development of microdevices for the in-plane thermoelectric characterization of deposited films

Adsorption of organic matter on titanium surfaces with nano- and micro-scale roughness studied with the electrochemical quartz crystal microbalance dissipation technique

Applicability of a recently proposed tribocorrosion model to CoCr alloys with different carbides content

Tribocorrosion in Pressurized High-Temperature Water: A Mass Flow Model Based on the Third-Body Approach

Advanced Insights on the Co-Deposition Mechanisms in Ceramic Particles Reinforced Metal Matrix Composites

Electrochemical Co-Deposition of Gold and Carbon Nanocapsules from a Colloidal Suspension

Atomic aluminum content (x) effect on fretting-corrosion of Ti1-xAlxN coatings for orthopedic applications

Erosion mechanisms during abrasive waterjet machining: Model microstructures and single particle experiments

Silicon Corrosion in Neutral Media: The Influence of Confined Geometries and Crevice Corrosion in Simulated Physiological Solutions

Effect of surface films on tribologically induced metallurgical transformations of steel in oil lubricated contacts