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Stefano Mischler

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Related publications (87)

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The Electrochemical Behavior of Ti in Human Synovial Fluids

Stefano Mischler, Brigitte Jolles-Haeberli, Anna Neus Igual Muñoz, Yueyue Bao, Claes Olof Anders Olsson

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 ...

MDPI2022

Electrochemical Characterization of CoCr Alloy in In-vivo Synovial Fluids

Stefano Mischler, Brigitte Jolles-Haeberli

Metallic materials implanted in living tissues are subject to the corrosive environment of body fluids, which constitutes a complex electrolyte critically dependent on each individual person. CoCr alloys are widely used as biomedical prosthesis for hip and ...

NACE International2015

An Overview of Serum Albumin Interactions with Biomedical Alloys

Oksana Klok, Stefano Mischler, Anna Neus Igual Muñoz

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 ...

2020

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

Stefano Mischler, Anna Neus Igual Muñoz, Anna Dalmau Mallorquí

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 ...

ELSEVIER SCIENCE SA2023

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

Stefano Mischler, Emilija Ilic

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 ...

ELSEVIER SCIENCE SA2019

Modeling tribocorrosion of passive metals - A review

Stefano Mischler, Shoufan Cao

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 ...

PERGAMON-ELSEVIER SCIENCE LTD2018

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

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

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

Stefano Mischler

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 ...

ELSEVIER2021

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

Stefano Mischler, Anna Neus Igual Muñoz

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 ...

AIP Publishing2021

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

Marco Cantoni, Stefano Mischler, Shoufan Cao

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 ...

Elsevier Science Sa2017

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

Stefano Mischler

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 ...

Springer Verlag2016

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

Stefano Mischler

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 ...

ELECTROCHEMICAL SOC INC2019

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

Stefano Mischler

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 ...

Elsevier Science Sa2016

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

Stefano Mischler, Johann Michler

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 ...

Elsevier Science Sa2017

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

Stefano Mischler, Emilija Ilic

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 ...

2019

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

Marco Cantoni, Stefano Mischler, Shoufan Cao

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 ...

Elsevier Science Sa2016

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

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

Tribological and tribocorrosion behavior of nickel sliding against oxide ceramics

Stefano Mischler, Anna Neus Igual Muñoz, Shoufan Cao

Nickel is widely used as a coating material in electroplating because of its good corrosion and wear resistance even at high temperature. Tribocorrosion has been identified as one of the main degradation mechanisms of nickel. This study evaluated the tribo ...

ELSEVIER SCIENCE SA2019