SELECTED CORROSION CONTROL TECHNIQUES (CTM 803)

Materials Selection and Design: The Importance of Design in Corrosion Prevention. Compatibility of Materials and Environments. Materials Selection for Corrosion Control (Metals, Alloys, Nonmetals, Composites). Recent advances in corrosion resistant materials. Corrosion Inhibitors: Corrosion Inhibition (Theory and Practice). Fields of application of corrosion inhibitors. Environmentally friendly corrosion inhibitors. Corrosion Inhibition mechanisms and models. Protective Coatings: Overview of Protective coating systems. Organic coatings, Metallic coatings, Ceramics coatings, Nanocomposite coatings, Functional coatings. Surface preparation and coating application techniques. Coating failures: causes and prevention

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CORROSION IN RIENFORCED CONCRETES (CTM 810)

Processes in Concrete Corrosion: Corrosion reactions and mechanisms. Composition and properties of concrete. The nature of concrete environment. Forms of corrosion associated with concrete Corrosion of steel in concrete: Conditions for initiation and propagation. Factors that control corrosion rates in concrete. Effect of aggressive species like chloride, carbon dioxide, sulphate, and moisture. Testing and Monitoring Concrete Corrosion: Corrosion rate measurement, Half-cell potential survey, pH measurement, Corrosion sensors for concrete structures. Corrosion control in reinforced Concrete: Natural protectivity/resistivity of concrete. Concrete quality porosity, permeability, depth of cover, water/cement ratio, and chloride content. Corrosion inhibitors and additives. Membranes and sealers. Epoxy coating. Galvanizing. Cathodic protection. Choosing appropriate corrosion control interventions.

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CATHODIC PROTECTION (CTM 808)

Cathodic protection (CP) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell.

A simple method of protection connects the metal to be protected to a more easily corroded "sacrificial metal" to act as the anode. The sacrificial metal then corrodes instead of the protected metal.

For structures such as long pipelines, where passive galvanic cathodic protection is not adequate, an external DC electrical power source is used to provide sufficient current.

Cathodic protection systems protect a wide range of metallic structures in various environments

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MICROBIAL INDUCED CORROSION (CTM 806)

Description of microbiologically influenced corrosion (MIC). Bacterial transport, attachments and general mechanism. Role of aerobic and anaerobic microorganisms. MIC and biofilms. MIC failure analysis. General classification of bacteria in MIC. Common Microorganisms Associated with MIC. Sulfate Reducing Bacteria (SRB). Mechanisms and models of SRB corrosion. Sulphur-Oxidizing Bacteria (SOB) and acid-producing bacteria (APB). Iron-Oxidizing Bacteria (IOB). MIC evaluation and assessment: Chemical analysis using biosensors; Fiber-optic microprobe; Electric field mapping; DNA probes; Scanning electron microscope; Atomic force microscope; Oxygen microelectrodes; Corrosion sensors; Electrochemical measurements. MIC prevention and control: MIC prevention is cheaper than control. Maintaining sterile environment. Appropriate design, Environmental control. Complete drainage and dry storage. Chemical/biological treatment using oxidizing or non-oxidizing biocides, Biocides for different applications.

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CORROSION INHIBITION/INHIBITORS (CTM 804)

Corrosion control by chemical treatment. Classification of corrosion inhibitors. Corrosion inhibition mechanisms. Benign and harmful corrosion inhibitors. Critical concentrations and corrosion inhibition efficiency. Fields of application of corrosion inhibitors. Corrosion inhibitors for different environments (acidic, alkaline, salt water, CO2, concrete, simulated body fluids). Corrosion inhibitors for iron/steel, aluminium, copper, magnesium. Environmentally friendly corrosion inhibitors. Biomass corrosion inhibitors. Corrosion inhibited coatings for iron/steel and magnesium alloys. Selectivity and specificity of action of corrosion inhibitors. Techniques for predicting and monitoring corrosion inhibition performance. Computational modeling of corrosion inhibitor performance

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ANTICORROSION COATINGS TECHNOLOGY (CTM 802)

Introduction to paints, coatings and anticorrosion coatings. Coating system components and their functions (pigment, binder and solvent). Coating properties: Rheological properties, optical properties, adhesion, mechanical properties and chemical properties. Primers, intermediate coats, top coat and their functions.  Corrosion inhibiting primers. Mechanisms of anticorrosion action. Barrier and special functions of coatings. Surface Coating defects. Coating Application- Surface Preparation Techniques: Mechanical methods (Sand blasting and Flame clearing). Conversion Coatings and Pretreatment Chemicals. Paint Application Techniques: (Brushing, dipping, spraying, electrodeposition, vacuum impregnation etc). Functional Coatings: Self-healing/Smart Coatings, Superhydrophobic Coatings.

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CORROSION AND ENVIRONMENTAL MANAGEMENT (CTM 807)

Structured Framework for Corrosion Management. Corrosion Management Policy and Strategy Corrosion management systems and features of successful corrosion management systems. Corrosion Management Planning & Implementation. Big Data Analytics for corrosion prediction and management. Corrosion Risk Assessment. Risk Based Inspection. Risk based corrosion management system. Identification of corrosion threats. HACCP programs for corrosion. Lifecycle cost analysis. Corrosion control strategies. Corrosion monitoring and inspection. Review of programme performance. Proactive and Reactive Measurement of Performance Corrosion modeling and lifetime prediction. Environmental, Social and Economic Impact of Corrosion: Economic consequences: Loss of efficiency, Product contamination, Depletion of resources. Social impacts: Safety concerns, Health concern. Environmental impact: Environmental monitoring (soil, water, groundwater, sediment, ecology) of locations with corroding structures. Environmental assessment of corrosion control interventions. Life cycle impact assessment of corrosion control interventions.

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CORROSION BASICS (CTM 801)

Corrosion in oil and gas industry: The corrosion challenge in oil and gas industry in Nigeria and abroad. Corrosion of oil/gas facilities (upstream and downstream).

Factors that influence corrosion in oil and gas sector. Common aggressive environments in oil and gas industry: Pipelines and subsoil environments, drilling fluids, offshore environment, refineries, storage facilities, microbial influenced corrosion, CO2 and H2S Corrosion. Corrosion mitigation techniques in oil and gas: Corrosion inhibitors, anticorrosion and antifouling coatings, biocides, cathodic protection systems.

Corrosion in renewable energy systems: Degradation of energy infrastructure in extreme environmental conditions. Pollution-related Corrosion. Materials selection for extreme environments. Coatings for extreme environments. Efficient corrosion monitoring and control. Corrosion behavior of solar panels, and support structures. Developing more corrosion resistant and long-lasting PV panels.

Enhanced durability and reliability of PV systems. Corrosion risks to renewable energy systems and consequences.Corrosion in turbines and power plants: High temperature corrosion in turbines and power plants. Alloys and coatings for improved high temperature corrosion resistance. Role of oxide scales in high temperature corrosion. Structure and composition of effective oxide scales.



Lecturer: Mrs Mercy Amadi
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CORROSION IN THE ENERGY SECTOR ( CTM 805)

Corrosion in oil and gas industry: The corrosion challenge in oil and gas industry in Nigeria and abroad. Corrosion of oil/gas facilities (upstream and downstream).

Factors that influence corrosion in oil and gas sector. Common aggressive environments in oil and gas industry: Pipelines and subsoil environments, drilling fluids, offshore environment, refineries, storage facilities, microbial influenced corrosion, CO2 and H2S Corrosion. Corrosion mitigation techniques in oil and gas: Corrosion inhibitors, anticorrosion and antifouling coatings, biocides, cathodic protection systems.

Corrosion in renewable energy systems: Degradation of energy infrastructure in extreme environmental conditions. Pollution-related Corrosion. Materials selection for extreme environments. Coatings for extreme environments. Efficient corrosion monitoring and control. Corrosion behavior of solar panels, and support structures. Developing more corrosion resistant and long-lasting PV panels.

Enhanced durability and reliability of PV systems. Corrosion risks to renewable energy systems and consequences.Corrosion in turbines and power plants: High temperature corrosion in turbines and power plants. Alloys and coatings for improved high temperature corrosion resistance. Role of oxide scales in high temperature corrosion. Structure and composition of effective oxide scales.


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