Wear and Corrosion

Materials – the basis in materials science and engineering.

The subjects are, essentially, exposed in theoretical lessons, complemented by the presentation, at theoreticalpractical lessons, of applicative models, mechanisms and systems. In the practical and laboratorial classes take places laboratorial tribological test and case study analyses, as uphold in the work report on a subject defined in such classes. Progress assessment by final written exam (75%) and final statement in the practical and laboratorial lessons.

The main objective of this course unit is related with learning outcomes and competences that allowed to understand, measure and control the ways of wear and corrosion phenomena’s in materials as degradation and
destructive process of mechanical components and systems. Upon completion of this unit, others transversal competences are developed, providing that the students should be able to use laboratory techniques and
equipments in tribological studies, as well to be able to make reasonable scientific evaluation of related experimental results.

Introduction to tribology: Significance, origins and objectives; Economic impact. Friction and Wear: Friction fundamentals and models; Adsorption; Surface topography; Wear laws and mechanisms. Materials for tribological applications: Tribological and metallurgical compatibility; Coatings and surface treatments. Lubrication and lubricants: Lubrication regimes; Viscosity. Mechanical components for tribological applications: Bearings; Seals; Roller chain; Gears. Tribological tests: Equipments and methods; Standard tests; Functional evaluation in applications. Introduction to corrosion: Definition; Classification; Corrosive environments; Corrosion damage; Corrosion costs; Corrosion engineering. Electrochemical fundamentals of corrosion. Corrosion kinetics. Types of corrosion. Corrosion prevention. High temperature corrosion.

NAO