78642 - Corrosion and Protection of Metallic Offshore Structures

Course Unit Page

  • Teacher Maria Bignozzi

  • Credits 6

  • SSD ING-IND/22

  • Teaching Mode Traditional lectures

  • Language Italian

SDGs

This teaching activity contributes to the achievement of the Sustainable Development Goals of the UN 2030 Agenda.

Good health and well-being Industry, innovation and infrastructure

Academic Year 2019/2020

Learning outcomes

The aim of the course is to introduce the student to the metallic materials used for off-shore installations and equipment. Knowledge on construction technologies, corrosion protection and materials for the protection from fire will also be provided.

Course contents

Prior Knowledge:

A prior knowledge and understanding of metallic materials, their microstructure and mechanical properties is required to attend with profit this course. These knowledges are usually acquired following the course of Metallurgy and/or Materials Science.

Fluent spoken and written English is a necessary pre-requisite: all lectures and tutorials will be in English.

Course Contents:

Morphology of corrosive phenomena in marine environment, 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 embrittlement, etc.

Metal surfaces preparation and protection methods: metallic, inorganic and organic coatings. Anodic and cathodic protection. High-temperature resistant materials. Choice criteria for metals suitable for marine environment and off-shore structures.

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 class

Assessment methods

Achievements will be assessed by the means of an oral examination. This is based on an analytical assessment of the "expected learning outcomes" and in particular the knowledge of the main mechanisms of corrosion and protection methods will be required.

The examination also takes into account Laboratory activity which is evaluated by means of a specific question in the oral examination.

The oral session, consists of a technical conversation with questions by the Professor and answers from the student.

High grades will be awarded to students who demonstrate an organic understanding of the subject and the outcomes above mentioned, a high ability for critical application, and a clear and concise presentation of the contents.

A failing grade will be awarded if the student shows knowledge gaps in key-concepts of the subject, inappropriate use of language, and/or logic failures in the analysis of the subject.

Teaching tools

Videos, power point slides and traditional blackboard.

Office hours

See the website of Maria Bignozzi