- Docente: Maria Bignozzi
- Credits: 6
- SSD: ING-IND/22
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Bologna
-
Corso:
Second cycle degree programme (LM) in
Chemical and Process Engineering (cod. 0929)
Also valid for Second cycle degree programme (LM) in Mechanical Engineering (cod. 0938)
Learning outcomes
Students will learn about corrosion processes (metals) and
degradation mechanism (polymers and ceramic materials). Protection
systems in the area of industrial engineering will be described and
discussed.
Course contents
Morphology of corrosive phenomena, rate and penetration of
corrosive attacks. Electrochemical corrosion mechanisms.
Thermodynamics: Nerst equation, corrosion tendency and electrode
potentials, Pourbaix diagrams. Kinetics: polarization and corrosion
rate, causes of polarization.
Passivation theory. Localized corrosion: selective corrosion,
pitting, stainless steel sensitization, etc. Effect of stress and
environment: stress corrosion cracking, corrosion fatigue, hydrogen
cracking, etc. Thermal, chemical, mechanical treatments of
metal surfaces and protection methods: metallic, inorganic and
organic coatings. Corrosion inhibitors. Anodic and cathodic
protection. Dry corrosion: thermodynamics and corrosion rate.
High-temperature resistant materials. Choice criteria definition
for materials suitable for specific environments.
Readings/Bibliography
H. Uhlig - Corrosion and Corrosion Control: an introduction to
corrosion science and engineering - John Wiley & Sons, Inc.
(1971).
Teaching methods
Frontal lessons and laboratory.
Assessment methods
The final test is based on an oral examination, which aims to evaluate
- the knowledge of the main mechanisms of corrosion- the knowledge of protection methods
Laboratory activity is evaluated by means of a special form filled with the results of the lab experiences.
The final grade is based on the evaluation of all the answers.Teaching tools
Overheads projector, blackboard
Office hours
See the website of Maria Bignozzi