Corrosione e Protezione dei Materiali
Corrosion and Protection of Materials Gabriella Roventi
the knowledge of the fundamentals of Chemistry and Materials tecnology is highly reccomenmended
KNOWLEDGE AND UNDERSTANDING:
The course has the aim to make the students able to acquire the knowledge of the corrosion phenomena of metallic materials as well as the protection techniques . This knowledge, by integrating the knowledge gained in the teachings of the basic sciences, are intended to implement technical training and scientific base of the students on the behavior of materials when they are in contact with the working environment and to address their preparation keeping account the interdisciplinary nature of the topics coveredCAPACITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
In order to address the design project successfully, which are the basis of practical applications of the knowledge, teaching aims to put students in a position to know correctly interpret the reasons for the behavior of various metallic materials, when used in engineering practice. These qualities will be acquired through the illustration of the most typical forms of interaction between materials and environment, and with the help of practical case histories. The students will acquire the following capabilities : 1- know how to appropriately choose the metal material to be used in a given work environment ; 2- identify the causes of failure or bad behavior of a service component ; 3- identify appropriate prevention and protectionTRANSVERSAL SKILLS:
The knowledge gained by the students will enable the resolution of problems related to practical cases of component failure . These cases were dealt with in the working groups, will result in the drafting of a report. In this way the student will get used to working in partnership developing capacity for critical evaluation.
Chemical, physical and mechanical interactions of the materials with the environment. Economic aspects of the materials deterioration. Technical and scientific aspects of the corrosion phenomena. High temperature oxidation and corrosion by means of electrochemical mechanism. Typical forms of corrosion: galvanic, pitting , crevice, intergranular , stress corrosion, etc. Effect of environment type on the corrosion of metal structures: atmosphere, fresh waters, sea water, soil, concrete, artificial environments. Corrosion inhibitors. Constructive strategies to avoid corrosive phenomena. Deterioration processes of the materials with particular reference to metallic materials. Thermodynamic and kinetic aspects. Chemical, physical and mechanical interactions of the materials with the environment. Techniques for corrosion prevention and protection. Superficial pretreatments. Organic and inorganic superficial coatings: painting, galvanizing, enamelling, etc.
Criterions of materials selection. Cathodic protection of the structures. Recovery/restoration techniques of corroded materials. Constructive strategies to extent the structure and manufactured articles durability.
Development of the examination
LEARNING EVALUATION METHODS
The assessment of student learning consists of an oral test:
- the oral test consists in the discussion of two or three topics covered in the course. During the oral test some real objects or some pictures of them are also shown; these objects were subjected to corrosion phenomenon and the student will perform a diagnosis of the causes of damage and possible methods of prevention.
LEARNING EVALUATION CRITERIA
The measurement of learning is performed by giving a numerical weight to each of the following parameters:
- knowledge of a given topic;
- reasoning ability;
- ability to identify practical cases of corrosion and to indicate how to solve them.
LEARNING MEASUREMENT CRITERIA
To each parameter is assigned a mark between zero and thirty useful for the formulation of the final mark.
FINAL MARK ALLOCATION CRITERIA
In order to obtain an overall positive evaluation, the student must achieve at least a pass, amounting to eighteen points in each of the three parameters mentioned above.
Full marks with distinction is given to students who, answering to all questions correctly, have demonstrated a complete knowledge of the course topics.
G. Wranglen, Ed. Italiana a cura R. Fratesi: Elementi di Corrosione e protezione dei metalli, ECIG Genova.
P. Pedeferri, Corrosione e protezione dei materiali metalici , Vol. 1 e 2, Ed. Polipress - Milano
- Ingegneria Meccanica (Corso di Laurea Triennale (DM 270/04))