CorroZone: Introduction to Corrosion

<p>Full courses here</p> <p>Slowing corrosion chemically: classifying inhibitors as anodic, cathodic or mixed and their Evans-diagram effect, the 'dangerous inhibitor' acceleration risk, the molecular adsorption...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>Why occluded geometries corrode: the geometric features that create susceptibility, the three-phase initiation (oxygen depletion, metal-ion hydrolysis, chloride migration), the critical...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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 /...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...

<p>Full courses here</p> <p>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...