Paper format. National Exams, May 2018 — 10-Met-A7, Corrosion and Oxidation. Three hours, open book, approved Casio/Sharp calculator only. Eight questions of 20 marks each; the rubric states that the first five questions as they appear in the answer book constitute a complete paper (100 marks). All eight are answered here, because this set is a study resource rather than an exam script. The rubric also flags that answers take one of three forms — essay, calculation, or a comparison table — and marks clarity and organisation accordingly.
Reference texts. The answers below are keyed to the works normally recommended for this syllabus code:
- M. G. Fontana, Corrosion Engineering, 3rd ed. — electrochemical corrosion theory, polarization and passivity (Ch. 6), forms of corrosion: galvanic, crevice, pitting, intergranular, stress corrosion cracking (Ch. 3), cathodic and anodic protection (Ch. 4–9).
- D. A. Jones, Principles and Prevention of Corrosion, 2nd ed. — thermodynamics and the Nernst equation (Ch. 2–3), mixed-potential and kinetics/polarization diagrams (Ch. 4), passivity (Ch. 6), environmental cracking (Ch. 10–11), coatings and cathodic protection (Ch. 13–14).
- W. D. Callister and D. G. Rethwisch, Materials Science and Engineering: An Introduction, 10th ed. — corrosion and degradation of materials, incl. degradation of polymers (Ch. 17).
- ASM Handbook, Vol. 13A (Corrosion: Fundamentals, Testing, and Protection) — Pilling–Bedworth ratio and high-temperature oxidation, forms of corrosion, cathodic protection practice.
