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Course Description
Created in July 1995 last updated November 2000
This two-day course will cover both the principles of corrosion and the practice of its control and prevention in the military service environments with the aim to increase the combat readiness/preparedness and the reliability of military equipment and systems, including military vehicles, ordnance system, eqipment and supporting systems operating on land, in air and in sea.
COURSE CONTENTS[Back to top]
1. Why and How Metals Corrode
This half-day module deals with the fundamental principles of corrosion. Participants are expected to be familiar with “O” or “A” level chemistry.
Topics covered in this module include: electrochemical series, Daniell cell, Galvanic cell, Galvanic series, Concentration cell, differential aeration, Nernst equation, potential-pH diagram, cathodic protection, Double layer, polarisation, Tafel equation, Tafel plot, rate of corrosion, diffusion and activation controlled processes, passivity and its breakdown, anodic protection, oxidation of metal and alloys at high temperatures, rate laws of oxidation, factors controlling the rate of oxidation.
2. The Nature of Military Service Environments and Different Forms of Corrosion in Military Equipment And Systems
This half-day module covers the following topics: why and how environment affects the rate and forms of corrosion, general classification of environments, classification of military service environments, operational environment of military vehicles, corrosion influenced by atmospheric composition, temperature, relative humidity, rainwater, chloride contents, sulphur dioxide and others. Different forms of corrosion in military vehicles: uniform corrosion, galvanic corrosion, crevice corrosion, pitting, exfoliation, stress corrosion cracking, corrosion fatigue, and hydrogen related damages.
3. Materials and Processes for Corrosion Control In Military Equipment And Systems
This half-day module covers the materials and processes for corrosion control and prevention. Topics covered include: design against corrosion, materials selection, corrosion resistance properties and processes of metallic coatings for military applications (Cd, Zn, Al, Cr, Ni, Cu, Sn) –electroplating, electroless plating, galvanizing, anodising, metallic-spray, corrosion resistance properties of organic coatings for military applications, rust-proofing compounds, corrosion control of fuel tanks, cooling system and other components with inhibitors
4. Corrosion Testing and Monitoring
This half-day module covers some techniques for testing and monitoring corrosion in military vehicles. Topics covered include: classification of corrosion test, classification of techniques, specifications and standards, coupons, probes and sensors, electrical resistance, polarisation resistance, impedance, potentiodynamic polarisation, test for materials susceptibility to corrosion, test for corrosiveness of operational military service environment, test for effectiveness of protective measures, test for quality of processed components, test for life prediction of finished component and assembly, monitoring the performance of components for maintenance and repair.
WHO SHOULD ATTEND[Back to top]
This course has been structured in such a way that it is particularly suited for military officers, designeers, technologists, engineers, technical service and maintenance personnel who deal with military equipment and systems.
