Explain the following observations, using diagrams to illustrate your answer wherever possible: (a) Steel nails used to...

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Mechanical Engineering

Explain the following observations, using diagrams to illustrateyour answer wherever possible:
(a) Steel nails used to hold copper roofing sheet in positionfailed rapidly by wet corrosion.
(b) The corrosion of an underground steel pipeline was greatlyreduced when the pipeline was connected to a buried bar ofmagnesium alloy.
(c) Mild-steel radiators in a central heating system were foundto have undergone little corrosion after several years'service.
(d) A reaction vessel for a chemical plant was fabricated bywelding together stainless steel plates containing 18% chromium, 8%nickel and 0.1% carbon. During service, it was observed that thevessel corroded badly near the welds.

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4.3 Ratings (557 Votes)

ANSWERA Steel bars used to hold copper material sheet in positionflopped quickly by wet erosion at rooftop because of dampnessnoticeable all around or because of downpours the oxygen presentin test sum in decreased by the accompanying responseO2HO 4e 4OHalso the metal corroding response anFe Fe2ethese two particles from hydrated iron oxides See Answer

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