CorroZone: Introduction to Corrosion

A plain-language audio walk through the fundamentals of corrosion science and engineering — lecture by lecture, from CorroZone's Introduction to Corrosion course. From what corrosion actually is to the electrochemistry, forms, testing and control that every engineer needs. Free, no login. From CorroZone.Full courses here: https://corrozone.com/courses#udemy

27 episodes

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Episodes 27

Introduction to Corrosion Science and Engineering — Course Introduction
2mo ago · 6:00
Full courses here: https://corrozone.com/courses#udemy A short guided tour of the Introduction to Corrosion Science and Engineering course — how its four sections build from why metals corrode, through the electrochemical principles, to the forms of corrosion and how we protect against them. What this course covers The course is organised into four sections: Section 1 — Corrosion Fundamentals: why corrosion occurs, the forms of localised corrosion, and the electrochemical nature of aqueous corrosion (anodic and cathodic reactions, and how charge moves through metals and electrolytes). Section
01 · Introduction to Section 1: Corrosion Fundamentals
2mo ago · 5:00
Full courses here: https://corrozone.com/courses#udemy Sets the scene for Section 1: the economic and societal scale of corrosion, why metals are thermodynamically driven back to their oxidised states, and the four fundamentals topics ahead. What you'll learn Appreciate the economic and societal scale of corrosion damage Understand that corrosion results from a thermodynamic driving force to return metals to stable oxidised states Identify the four major topics covered in Section 1 Recognise the four-section structure of the course and the progression from fundamentals to protection Who this i
02 · Why Corrosion Occurs
2mo ago · 13:00
Full courses here: https://corrozone.com/courses#udemy The thermodynamic driving force behind corrosion, the difference between dry and aqueous corrosion, how corrosion is classified by mechanism and form, and the factors that control how severe it gets. What you'll learn Explain the thermodynamic driving force for corrosion in terms of Gibbs free energy and electrode potential Distinguish high-temperature (dry) corrosion from aqueous (electrochemical) corrosion Classify corrosion by mechanism (chemical vs. electrochemical) and by form (uniform, localised, environmentally assisted cracking) Id
03 · Types of Localised Corrosion
2mo ago · 26:00
Full courses here: https://corrozone.com/courses#udemy A tour of localised corrosion — pitting, crevice, galvanic, intergranular and stress corrosion cracking — how each starts and spreads, and why concentrated attack is harder to predict than uniform corrosion. What you'll learn Distinguish uniform corrosion from localised corrosion and explain why localised forms are more dangerous Describe the autocatalytic initiation and propagation mechanism of pitting corrosion Explain how crevice geometry drives oxygen depletion and acid-chloride evolution inside an occluded space Apply the galvanic ser
04 · Electrochemical Nature of Aqueous Corrosion
2mo ago · 19:00
Full courses here: https://corrozone.com/courses#udemy Why aqueous corrosion is electrochemical, not just chemical: the four parts of a corrosion cell, why anodic and cathodic sites form on one surface, and how the electrolyte's conductivity, pH and chloride drive it. What you'll learn Explain why aqueous corrosion is an electrochemical rather than purely chemical process Identify and describe the four essential components of a corrosion cell Explain why anodic and cathodic sites develop on the same metal surface List at least three sources of local potential variation that create anodic/catho
05 · Anodic and Cathodic Reactions
2mo ago · 22:00
Full courses here: https://corrozone.com/courses#udemy The half-reactions that drive corrosion — metal dissolution at the anode, oxygen reduction and hydrogen evolution at the cathode — how they shift local pH, and how they combine to corrode iron in water and in acid. What you'll learn Write the anodic half-reaction for metal dissolution and identify the products Identify the dominant cathodic reaction in aerated neutral water and explain why Write the oxygen reduction and hydrogen evolution half-reactions with correct stoichiometry Explain how oxygen reduction raises local pH at cathodic sit
06 · Charge Transport in Metals and in Solutions (Electrolytes)
2mo ago · 21:00
Full courses here: https://corrozone.com/courses#udemy How charge actually moves in a corrosion cell: electron conduction through the metal versus ionic conduction through the electrolyte, what controls each, and why electrolyte conductivity and ohmic drop govern the corrosion current, its spatial distribution, and electrochemical measurement. What you'll learn Explain how electrons are transported through a metal and how this differs fundamentally from ionic transport in an electrolyte Define electrical conductivity and resistivity and state typical values for metals and common electrolytes D
07 · Introduction to Section 2: Electrochemical Principles and Corrosion Kinetics
2mo ago · 6:00
Full courses here: https://corrozone.com/courses#udemy A short roadmap to Section 2: the quantitative electrochemical tools ahead — from Faraday's law through the Nernst equation, Pourbaix and Evans diagrams — and how they build on the qualitative foundation laid in Section 1, distinguishing thermodynamic from kinetic analysis. What you'll learn Identify the quantitative electrochemical tools covered in Section 2 Understand the logical progression from Faraday's law through Evans diagrams Articulate the distinction between thermodynamic and kinetic analysis tools Recognise how Section 2 tools
08 · Faraday's Law
2mo ago · 28:00
Full courses here: https://corrozone.com/courses#udemy Faraday's law as the quantitative bridge between electric current and metal loss: equivalent weight, converting a corrosion current density into a corrosion rate (mm/year and mpy), estimating mass loss and service life, and the caveats in applying the law to real corrosion systems. What you'll learn State Faraday's law and write the central equation m = Q·We/F Define equivalent weight and calculate it for common engineering metals given molar mass and valence Convert between current density (μA/cm²) and corrosion rate (mm/year, mpy) using
09 · Potential Measurements, Reference Electrodes, and the Nernst Equation
2mo ago · 35:00
Full courses here: https://corrozone.com/courses#udemy Why an electrode potential is always measured against a reference: the construction and conventions of the SHE, SCE, Ag/AgCl and Cu/CuSO4 electrodes, converting potentials between their scales, and using the Nernst equation and the electrochemical series to predict equilibrium potentials and corrosion tendency. What you'll learn Explain why absolute electrode potentials cannot be measured directly and why a reference electrode is needed Describe the construction and conventions of the standard hydrogen electrode (SHE), SCE, Ag/AgCl, and Cu
10 · Pourbaix Diagrams
2mo ago · 27:00
Full courses here: https://corrozone.com/courses#udemy Reading the corrosion map: how a Pourbaix (E–pH) diagram is built from the Nernst equation and chemical equilibria, the immunity, passivation and corrosion regions, the water-stability lines, worked examples for iron, aluminium and zinc, and where thermodynamic predictions must give way to kinetics. What you'll learn Construct Pourbaix diagram boundaries from Nernst equation and chemical equilibria Identify and interpret the immunity, passivation, and corrosion regions on a Pourbaix diagram Explain the physical meaning of the water stabili
11 · Current-Potential Diagrams
2mo ago · 23:00
Full courses here: https://corrozone.com/courses#udemy The kinetics of a single electrode reaction: reading the anodic and cathodic branches of a polarisation curve, the Butler–Volmer equation, exchange current density and transfer coefficients, extracting Tafel slope and exchange current density from a Tafel plot, and where concentration polarisation and passivation break Tafel behaviour. What you'll learn Sketch and interpret a current-potential (polarisation) curve for a single electrochemical reaction, identifying the anodic and cathodic branches and the equilibrium potential State and app
12 · Evans Diagrams
2mo ago · 20:00
Full courses here: https://corrozone.com/courses#udemy Mixed potential theory in one picture: how superimposing anodic and cathodic polarisation curves locates E_corr and i_corr, how shifts in cathodic or anodic kinetics move the corrosion point, classifying inhibitors, the diffusion-limited cathode, and predicting galvanic couples and the area-ratio effect. What you'll learn Explain how an Evans diagram is constructed by superimposing anodic and cathodic polarisation curves Identify Ecorr and icorr graphically from the intersection of the anodic and cathodic curves Apply mixed potential theor
13 · Diffusion Limitation and the Oxygen Reduction Reaction
2mo ago · 22:00
Full courses here: https://corrozone.com/courses#udemy Why oxygen reduction in aerated near-neutral water is controlled by mass transport: the limiting current density i_L = nFDC*/δ and what sets each variable, the Tafel / mixed-control / diffusion-plateau regions of the cathodic curve, reading the resulting Evans diagram, and how deaeration and flow act as mitigation through the limiting current. What you'll learn Explain why the rate of the oxygen reduction reaction in near-neutral aerated water is controlled by mass transport rather than electrode kinetics State and interpret the limiting c
14 · Introduction to Section 3: Forms of Aqueous Corrosion
2mo ago · 6:00
Full courses here: https://corrozone.com/courses#udemy A short roadmap to Section 3: the major forms of aqueous corrosion ahead, the progression from general to increasingly localised attack, and how the electrochemical tools from Section 2 carry over. What you'll learn Identify the four major forms of aqueous corrosion covered in Section 3 Understand the logical progression from general to localised corrosion forms Articulate how the electrochemical tools from Section 2 apply to Section 3 forms Recognise the increasing degree of localisation from general to pitting corrosion Who this is for A
15 · General (Uniform) Corrosion
2mo ago · 33:00
Full courses here: https://corrozone.com/courses#udemy Uniform corrosion end to end: the distributed anodic/cathodic site mechanism behind macroscopically even attack, how pH, dissolved oxygen, temperature, flow velocity and alloy composition set the rate, the measurement methods (weight loss, thickness gauging, ER probe, LPR), the corrosion-allowance design calculation, and mitigation choices. What you'll learn Define uniform corrosion and explain how it differs mechanistically from localised corrosion Describe the distributed anodic/cathodic site mechanism that produces macroscopically unifo
16 · Galvanic Corrosion
2mo ago · 34:00
Full courses here: https://corrozone.com/courses#udemy Dissimilar-metal corrosion: the potential-difference, electron-flow and ionic-current mechanism, the galvanic series versus the standard electrochemical series, picking anode and cathode, the decisive cathode-to-anode area ratio, the environmental factors, Evans-diagram analysis of a couple, and the full set of mitigation strategies. What you'll learn Explain the electrochemical mechanism of galvanic corrosion including the roles of potential difference, electron flow, and ionic current Distinguish the galvanic series from the standard ele
17 · Crevice Corrosion
2mo ago · 32:00
Full courses here: https://corrozone.com/courses#udemy Why occluded geometries corrode: the geometric features that create susceptibility, the three-phase initiation (oxygen depletion, metal-ion hydrolysis, chloride migration), the critical crevice solution, the autocatalytic self-sustaining propagation, how crevice differs from pitting, the engineering risk factors (geometry, PREN, temperature, chloride), and prevention. What you'll learn Identify the geometric features that create susceptibility to crevice corrosion in engineering structures Explain the three-phase initiation mechanism: oxyg
18 · Pitting Corrosion
2mo ago · 30:00
Full courses here: https://corrozone.com/courses#udemy How passive films break down at chloride-attacked inclusion and defect sites, the autocatalytic acidified-chloride chemistry inside a growing pit, metastable versus stable pitting, the pitting and repassivation potentials read from a cyclic polarisation curve, ranking alloys by PREN and critical pitting temperature, and why pitting and crevice differ. What you'll learn Explain the mechanism of passive film breakdown by chloride ions at inclusion and defect sites Describe the autocatalytic chemistry inside a propagating pit (acidification,
19 · Introduction to Section 4: Corrosion Prevention and Protection Systems
2mo ago · 6:00
Full courses here: https://corrozone.com/courses#udemy A short roadmap to Section 4: the four corrosion-control strategies ahead, the move from understanding corrosion to controlling it, how each strategy intervenes in the electrochemical process, and the link back to the Evans-diagram framework from Section 2. What you'll learn Identify the four major corrosion control strategies covered in Section 4 Understand the logical progression from corrosion understanding to corrosion control Articulate how each protection strategy intervenes in the electrochemical corrosion process Connect corrosion
20 · Cathodic Protection
2mo ago · 37:00
Full courses here: https://corrozone.com/courses#udemy Protecting metal by polarising it cathodically: the Evans/Pourbaix basis, sacrificial-anode versus impressed-current systems, choosing anode materials, the −0.850 V vs Cu/CuSO4 criterion and its limits, over-protection risks (hydrogen embrittlement, cathodic disbondment), field applications, coating synergy, potential-survey monitoring, and stray-current interference. What you'll learn Explain the electrochemical basis of cathodic protection using Evans diagrams and Pourbaix diagrams Distinguish between sacrificial anode and impressed curr
21 · Corrosion Inhibitors
2mo ago · 32:00
Full courses here: https://corrozone.com/courses#udemy Slowing corrosion chemically: classifying inhibitors as anodic, cathodic or mixed and their Evans-diagram effect, the 'dangerous inhibitor' acceleration risk, the molecular adsorption mechanism and the Langmuir isotherm, calculating inhibitor efficiency, application-specific selection, and the environmental/regulatory constraints including chromate replacement. What you'll learn Classify corrosion inhibitors by electrochemical action (anodic, cathodic, mixed) and explain how each class affects Evans diagrams and corrosion potential Explain
22 · Paints Part 1: Formulation and Protective Mechanisms
2mo ago · 34:00
Full courses here: https://corrozone.com/courses#udemy How an anticorrosive paint is built and how it protects: the four key ingredients, binder chemistries and the film properties they set, functional versus extender pigments, PVC and CPVC, the barrier / inhibitive-primer / zinc-rich mechanisms, lamellar pigments, the multilayer system, and why surface preparation is the single biggest factor in performance. What you'll learn Identify and describe the four key ingredients of an anticorrosive paint and their role in the dried film Distinguish between binder types (epoxy, alkyd, polyurethane, a
23 · Paints Part 2: Failure Mechanisms
2mo ago · 39:00
Full courses here: https://corrozone.com/courses#udemy How coatings fail: water and ion transport through the film to the substrate, anodic undermining versus cathodic disbondment, osmotic and corrosion-driven blistering and how to tell them apart, the mechanical failure modes, UV degradation and chalking, surface-prep defects as initiation sites, and the inspection and maintenance programme. What you'll learn Describe the mechanisms by which water and ions transport through organic coating films and explain the consequences of their arrival at the metal substrate Distinguish between anodic un
24 · Inorganic Coatings
2mo ago · 45:00
Full courses here: https://corrozone.com/courses#udemy Inorganic coatings across the metallic, conversion, anodic-oxide and ceramic families: hot-dip galvanising and its layered microstructure, anodic versus cathodic coatings at a defect, the barrier / sacrificial / inhibition mechanisms, atmospheric-corrosivity selection, electroplating versus galvanising, chromate alternatives under REACH/RoHS, and multilayer system design. What you'll learn Explain the classification of inorganic coatings into metallic, conversion, anodic oxide, and ceramic families Describe the hot-dip galvanising process,

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CorroZone: Introduction to Corrosion

Episodes 27

Introduction to Corrosion Science and Engineering — Course Introduction

01 · Introduction to Section 1: Corrosion Fundamentals

02 · Why Corrosion Occurs

03 · Types of Localised Corrosion

04 · Electrochemical Nature of Aqueous Corrosion

05 · Anodic and Cathodic Reactions

06 · Charge Transport in Metals and in Solutions (Electrolytes)

07 · Introduction to Section 2: Electrochemical Principles and Corrosion Kinetics

08 · Faraday's Law

09 · Potential Measurements, Reference Electrodes, and the Nernst Equation

10 · Pourbaix Diagrams

11 · Current-Potential Diagrams

12 · Evans Diagrams

13 · Diffusion Limitation and the Oxygen Reduction Reaction

14 · Introduction to Section 3: Forms of Aqueous Corrosion

15 · General (Uniform) Corrosion

16 · Galvanic Corrosion

17 · Crevice Corrosion

18 · Pitting Corrosion

19 · Introduction to Section 4: Corrosion Prevention and Protection Systems

20 · Cathodic Protection

21 · Corrosion Inhibitors

22 · Paints Part 1: Formulation and Protective Mechanisms

23 · Paints Part 2: Failure Mechanisms

24 · Inorganic Coatings

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Episodes 27

Introduction to Corrosion Science and Engineering — Course Introduction

01 · Introduction to Section 1: Corrosion Fundamentals

02 · Why Corrosion Occurs

03 · Types of Localised Corrosion

04 · Electrochemical Nature of Aqueous Corrosion

05 · Anodic and Cathodic Reactions

06 · Charge Transport in Metals and in Solutions (Electrolytes)

07 · Introduction to Section 2: Electrochemical Principles and Corrosion Kinetics

08 · Faraday's Law

09 · Potential Measurements, Reference Electrodes, and the Nernst Equation

10 · Pourbaix Diagrams

11 · Current-Potential Diagrams

12 · Evans Diagrams

13 · Diffusion Limitation and the Oxygen Reduction Reaction

14 · Introduction to Section 3: Forms of Aqueous Corrosion

15 · General (Uniform) Corrosion

16 · Galvanic Corrosion

17 · Crevice Corrosion

18 · Pitting Corrosion

19 · Introduction to Section 4: Corrosion Prevention and Protection Systems

20 · Cathodic Protection

21 · Corrosion Inhibitors

22 · Paints Part 1: Formulation and Protective Mechanisms

23 · Paints Part 2: Failure Mechanisms

24 · Inorganic Coatings