Advanced Corrosion Science (ET) (AdvCorrET)5 ECTS
(englische Bezeichnung: Advanced Corrosion Science (ET))

Lehrveranstaltungen:

• • Advanced Corrosion Science
    (Vorlesung, 2 SWS, Michael Strebl et al., Di, 8:30 - 10:00, 0.85; Terminvereinbarung in Vorbesprechung Master LKO WS 2021/22; Vorbesprechung: 19.10.2021, 9:00 - 10:00 Uhr, Zoom-Meeting)
  • Berechnung von Korrosionsproblemen
    (Übung, 2 SWS, Michael Strebl et al., Fr, 12:15 - 13:45, 0.85; Vorbesprechung: 19.10.2021, 9:00 - 10:00 Uhr, Zoom-Meeting)
  • Seminar Surface Science and Corrosion
    (Seminar, 2 SWS, Patrik Schmuki, Do, 16:00 - 17:30, 0.85)

Inhalt:

Recap of fundamental background in electrochemistry and corrosion
Introduction to advanced methods in corrosion science:
• Electrochemical methods (Polarization curve, EIS, EC noise)
• Local techniques (SVET, SKP, SIET, LEIS)
• Non electrochemical techniques: Respirometry, mass loss, solution analysis, resitance method
• Surface analysis (SEM, TEM, EDX, XPS, Auger, ToF SIMS, GDOES, atom probe analysis)
Discussion of current issues in corrosion science:
• Biodegradable metals
• Passive films und localized corrosion
• Atmospheric corrosion
• Corrosion in nuclear waste repositories
• Corrosion of advanced materials: AM, BMG, high entropy alloys und ultrafine-grained materials
• Drinking water corrosion, microbially induced corrosion, cathodic protection
• Inhibitors und smart coatings
• Mg und Al corrosion
• Corrosion Modelling, DFT
• (Corrosion in) Electrochemical energy storage and conversion
Corrosion failure case studies and analysis:
Discussion of the conditions and mechanisms that led to corrosion failure based on observations and experimental evidence and derivation of a solution to the problem.

Lernziele und Kompetenzen:

The students are able to:
Identify, distinguish, and explain corrosion mechanism and different forms of corrosion.
Illustrate and explain electrochemical, local, non-electrochemical and surface analysis methods that are used in corrosion science.
Interpret results of the characterisation methods described above
Explain the different concepts of smart coatings and self-healing coatings including triggers and release mechanisms of inhibitors.
Present the details that play a role atmospheric corrosion processes like salts, relative humidity, electrolyte film thickness, time of wetness, influence of gases, wet dry cycling and corrosion product formation.
Explain different test methods for atmospheric corrosion, like lab exposure, accelerated corrosion tests and field exposure tests.
Discuss special features in the corrosion mechanisms of Mg and Al alloys (anomalous H2 evolution).
Review different mechanisms of localized corrosion and explain the significance of pit initiation and pit growth, critical pitting potential, critical pitting temperature and repassivation in localized corrosion.
Explain cathodic and anodic paint disbonding or delamination and how it can be studied using SKP.
Assess findings of scientific investigations of corrosion failure, determine corrosion mechanisms that lead to the corrosion issue and develop a concept for solving the corrosion problem.
Explain mechanisms of different types of corrosion inhibitors.
Summarize corrosion properties of advanced materials like high entropy alloys, bulk metallic glasses, additive manufactured materials or ultrafine-grained materials.
Describe corrosion related aspects of nuclear waste storage and the influence of radiation on corrosion.
Compare different types of metals in their applicability as a biodegradable metal and explain surface treatments to control the degradation behavior.
Understand the complexity of simulated body fluids and possible discrepancy between in vitro and in vivo experiments.
Describe mechanisms of microbially induced corrosion, dezincification.
Explain cathodic protection strategies by sacrificial anodes and impressed current cathodic protection.