(English) Corrosion, Erosion Engineering and Cathodic Protection
(English) Introduction, electrochemical concepts relevant to corrosion, corrosion in specific (atmospheric, aqueous or buried) environments, causes of erosion, design and materials selection for corrosion prevention, corrosion protection by coating, corrosion inhibitors, cathodic and anodic protection, corrosion testing and monitoring, corrosion failures analysis, application of computer programs in corrosion studies, analysis of several industrial cases that reflect current development and trends
(English) After completion of the course the participants will be able:
- Developing a clear understanding of the economic effects, health & safety effects and the technological effects of corrosion.
- Update understanding the principles of corrosion chemistry, mixed potential theory and the modern theory of corrosion and its applications.
- Know to predict the corrosion tendency of a metal or an alloy in a given environment (atmospheric, aqueous or buried) and to estimate the corrosion rate.
- Familiarize the trainees with the various forms of corrosion and their mitigation measures.
- Enable the trainees to identify the various types and causes of corrosion and their correlation to corrosion failure analysis of metallurgical structures.
- Learn the principles of corrosion control including: o Material selection and equipment design. o Various types of coatings. o Corrosion inhibitors. o Catholic and anodic protection.
- Learn the most update applications of computer programs in corrosion studies, measurement, testing and monitoring methods.
- Get acquainted with discussion and analysis of several case studies that reflect current development and trends.
(English) Chemical engineers, laboratory engineers and technicians, chemists and technicians, production engineers, material engineers and who is qualified for this course.
(English) Day 1 :
- Introduction: Economic, social and environmental effect of corrosion.
- Corrosion principles: Thermodynamics of corrosion (Pourbaix diagrams).
- Kinetics of corrosion: Evans' diagrams, corrosion potential, current and rate.
- Mixed potential theory of corrosion and galvanic series in sea water.
- Modern theory of corrosion and the principle of differential aeration.
- Forms of Corrosion: Uniform corrosion, galvanic corrosion, concentration cell corrosion, pitting corrosion.
- Forms of Corrosion (cont.): Intergranular corrosion, crevice corrosion, stress corrosion cracking, corrosion fatigue, fretting corrosion.
- Forms of Corrosion (cont.): Erosion corrosion, hydrogen damages, corrosion in concrete and microbial corrosion.
- Round Table Discussion (0.5 hr).
- Principles of corrosion control: Corrosion prevention & material selection and equipment design.
- Protection from corrosion & various types of protective coatings. Organic coatings: corrosion resistant resins, plastics and polymers. Metallic coatings: thermal sprayed zinc, zinc-rich alloy coatings and galvanizing (either strip or hot-dip).
- Inhibition of corrosion & various types of corrosion inhibitors. Anodic inhibitors (e.g. chromate, nitrite), cathodic inhibitors (e.g. zinc oxide, volatile amines) and scavenging the dissolved oxygen.
- Anodic protection, theory, design and applications.
- Round Table Discussion (0.5 hr).
- Cathodic protection, theory, design and applications. Sacrificial (galvanic) systems, sacrificial-anode-type, its advantages and disadvantages.
- Impressed current systems (d.c. rectifier), its advantages and disadvantages, systematic cathodic protection design procedure, monitoring effectiveness of cathodic protection systems, criteria for cathodic protection, dielectric isolation.
- Corrosion testing procedures: Coupon exposure, accelerated corrosion, metallographic and potentiostatic tests.
- Corrosion testing procedures (cont.): Galvanostatic, linear sweep polarization, x-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy tests.
- Round Table Discussion.
- Applications of computer programs in corrosion studies.
- Applications of computer programs in measurement, testing and monitoring of corrosion.
- Analysis of several case studies that reflect current development and trends.
- Analysis of several case studies that reflect current development and trends, (cont.). Round Table