Venue: Polo scientifico-tecnologico Fabio Ferrari via Sommarive 9 - Trento
- Francisco J. Rodríguez-Gómez, National Autonomous University of Mexico (UNAM)
UNRAVELLING THE THERMODYNAMIC OF THE INTERFACE: THE CORROSION POTENTIAL
July 5th, 2019 Seminar Room h. 9:00 – 11:00
In the interaction of a metal, or any conductive or semiconductor material, with an electrolyte, a potential is established that has thermodynamic-type implications, since it is related to the energy of that surface. It is characteristic of a surface and the electrolyte with which it is in contact. Measuring the corrosion potential is the simplest electrochemical measure that can be performed, however, it gives a lot of thermodynamic information of the electrode / electrolyte interface. It is not necessary to know much technique to measure a corrosion potential, but to interpret the meaning of this parameter.
HOW TO PROTECT METALS FROM CORROSION? PART 1. CATHODIC PROTECTION
July 9th, 2019 Girasole Room h. 9:00 – 11:00
Metals exposed to an aggressive environment will suffer corrosion in a natural way, since the oxidized state is the one with the lowest energy. To prevent this type of damage, cathodic protection is used. Cathodic protection consists of converting the entire structure to be protected into a cathode. In this seminar the thermodynamic fundamentals and the kinetic bases of the cathodic protection by applied current and sacrificial anodes are reviewed. The criteria for cathodic protection and their practical implications are reviewed. The evaluation of sacrificial anodes in laboratory will be reviewed as well.
HOW TO PROTECT METALS FROM CORROSION? PART 2. CORROSION INHIBITORS
July 12th, 2019 Girasole Room h. 9:00 – 11:00
Corrosion is the natural result of the interaction between a metal and an aggressive medium. To mitigate this attack, it is possible to use, in closed systems, substances that added in small quantities greatly reduce the corrosion rate. The requirements that these substances must cover and the protection mechanisms will be analyzed. The classification of these materials leads to the possible selection in the various aggressive media at an industrial level. The evaluation of inhibitors in the laboratory will be addressed.
Professor at the National Autonomous University of Mexico (UNAM) with over 25 years of teaching experience. For 12 years he has been head of the Metallurgical Engineering Department, and he teaches “Corrosion and protection”, in theory and laboratory. He has written papers in refereed international journals and presented communications in national and international congresses. He has followed theses of degree, masters and doctorate in the field of Corrosion, Electrochemical Techniques, and Protective Coatings. He has been president of the Mexican Electrochemical Society (2015-2017), as well as chairman of the Central Mexico Section of NACE (National Association for Corrosion Engineers) (2015-2019).