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Upgrade nowCorrosion of Metals
Read through the material below, then test your understanding.
Module Lessons
Scientific Principles
SI Units and Measurement
Properties of Solid Materials (Metals)
Properties of Solid Materials (Plastics & Ceramics)
Mechanical Properties
Corrosion of Metals
Other Forms of Corrosion
Degradation of Plastics
Properties of Liquids (Water)
Properties of Liquids (Others)
Properties of Gases
Temperature and Heat
States of Matter
Sensible and Latent Heat
Conduction and Convection
Radiation and Expansion
Energy, Heat, and Power Calculations
Velocity, Acceleration, and Flow Rate
Force and Pressure
Siphonic Action
Mechanical Principles
Forces in Action
Lesson Overview
Corrosion is the breakdown of metals through chemical and electrochemical reactions that cause serious system damage. Understanding how oxidation, rusting, and galvanic action occur enables plumbers to select compatible materials and apply proven protection methods.
Learning Objectives
Explain the chemical processes of oxidation, passivity, and the conditions required for ferrous rusting.
Describe the electrochemical mechanism of galvanic corrosion, the electromotive series, and the role of electrolytes.
Identify standard industry methods for preventing corrosion, including sacrificial anodes, galvanising, and chemical inhibitors.
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