In natural environment, such as saliva, dental alloys are exposed to pronounced corrosion process, especially when exposed to wear during orthodontic treatment. NiTi dental alloys are used in first stage of healing when movements are greater, while stainless steel (AISI 304) archwires are used in the later phases when the teeth movements are minimal. Tribocorrosion tests on two different dental wires - stainless steel and nickel titanium willbe performed in conditions similar to natural, coefficient of friction andchanges of open circuit potential will be monitored. Wear rate will be determined in order to describe the process during application. Different electrochemical properties will be studied in artificial saliva in the presence of fluoride and at lower pH. Metal releases in artificial saliva at different times of exposure and their increase during tribocorrosion process will be monitored by ICPMS analysis. The study aims at obtaining the information which processes affect medical treatment or/and are potentially dangerous for patientʼs health.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 2147943Lectures for 5 ECTS ponts were conducted at University in Leoben, Austria for PhD students in the program Material Engineering. Electrochemical lectures included the basics of kinetics and thermodynamics in corrosion. Direct current methods (polarization methods), alternating current methods (like electrochemical impedance spectroscopy) and leectrochemical noise methods were thoroughly presented and different case studies presented as well.
B.05 Guest lecturer at an institute/university
COBISS.SI-ID: 2164583Based on the extensive research work in the field of surface engineerting and hard coatings dr. Podgornik was invated to give an invited talk at the E-MRS 2015 international conference, one of the most important and the largest conference on materials. In his lecture he gave an overview of DLC and CrN hard coatings used for tools and machine parts. The review involved methods, tribological and mechanical properties, with the focus on the interactions between coating, lubricant and the counter-material material in different contact conditions.
B.04 Guest lecture
COBISS.SI-ID: 1142186