Ilic Emilija, Pardo Ainhoa, Suter Thomas, Mischler Stefano, Schmutz Patrik, Hauert Roland (2019), A methodology for characterizing the electrochemical stability of DLC coated interlayers and interfaces, in Surface and Coatings Technology
, 375, 402-413.
Ilic Emilija, Pardo Ainhoa, Hauert Roland, Schmutz Patrik, Mischler Stefano (2019), Silicon Corrosion in Neutral Media: The Influence of Confined Geometries and Crevice Corrosion in Simulated Physiological Solutions, in Journal of The Electrochemical Society
, 166(6), C125-C133.
Ilic Emilija, PardoAinhoa, HauertRoland, SchmutzPatrik, MischlerStefano (2019), Delayed delamination mechanisms of DLC coatings on articulating implants, in eCM Online Periodical, 2019,
Pardo Ainhoa, Ilic Emilija, Thorwarth Kerstin, Stiefel Michael, Hauert Roland (2019), Corrosion fatigue in DLC-coated articulating implants: an accelerated methodology to predict realistic interface lifetime, in Science and Technology of Advanced Materials
, 20(1), 173-186.
Hauert Roland, IliicEmilija, Pardo-PerezAinhoa, SchmutzPatrik, MischlerStefano (2018), Accelerated tests for coating adhesion lifetime estimation in body fluid, in eCM Online Periodical, 2018
Ilic Emilija, PardoAinhoa, HauertRoland, SchmutzPatrik, MischlerStefano (2018), Lifetime Estimation of Coated Articulating Implants: accelerated testing to address crevice, stress and fatigue corrosion, in eCM Online Periodical, 2018
The target of this project is to analyze and understand the scientific principles of local deterioration mechanisms in confined electrolytes and to identify critical effects acting on the few atomic rows of reactively formed material at a coating/substrate interface. With this knowledge and the new electrochemical setups that will be built, we will gain the ability to predict the adhesion lifetime of coated parts (for example, coated artificial joint implants) which are in use for a much longer time period than they can be tested. The innovative aspects of research consist of detailed analysis of the electrochemical reaction induced chemistry generated at the interface, and the design and construction of experimental setups with very high current detection sensitivity allowing a quantitative determination of all interface degrading effects acting on a few atomic layers. These are mainly extremely slow crack advancements or very slow material dissolution by SCC (stress corrosion cracking), CC (Crevice Corrosion), passive surface oxide dissolution, fatigue or corrosion fatigue. Our considered approach is opposite to investigations on coating adhesion usually neglecting all very slowly advancing and time dependent effects acting on the interface. Artificial joint simulator tests, which are required prior to implantation, are accelerating typically only the phenomena which run as a function of articulation cycles and ignoring interface corrosion related phenomena slowly running as a function of time. This will then lead to false implant lifetime predictions for coated implants. In the last decades several series of DLC (diamond-like carbon) coated implants, which initially showed good results, still failed after 3-12 years in the patients mainly due to coating delamination. Today, no setups or procedure is known which is capable of predicting the interface lifetime of a coated material in a corrosive media, such as body fluid or ambient humid air based on scientific assessment of local “electro”chemical reaction rates