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#surface engineering
Every article tagged “surface engineering”.
2 articles
Materials Science
Your rain jacket stopped repelling water. The coating is almost certainly still on it
A jacket that has stopped beading water usually has not lost its finish — the finish is dirty, or lying flat. Coating a fabric is a completely different engineering problem from coating steel or glass, and the reason the industry cannot yet replace one particular chemistry comes down to a single number you can look up.
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Materials Science
A chip in car paint spreads. A scratch on a galvanised gate does not. The difference is worth ₹ lakhs on a real structure
Both are bare steel exposed to the same air, and they behave completely differently. The reason is that rust is not a chemical attack on metal — it is a battery, and a coating can interrupt it in three quite different ways. Here is which is which, why a small defect can be worse than no coating at all, and why salt-spray hours are a bad thing to buy on.
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