Rusting and Painting

Rusting and Painting

ZIMSEC O Level Combined Science Notes: Rusting and Painting

  • Painting is a popular method used to prevent rusting
  • The structure to be painted is cleaned using an acidic solution
  • This removes existing rust and dirt
  • Sand paper/scrubbing material  is also used to clean the surface to be painted
  • The surface is then left to dry
  • Once it is dry a coat of paint is applied
  • The paint prevents oxygen and water from coming in contact with the iron
  • By forming a protective layer on top of the iron
  • If the paint chips the iron must be repainted
  • Painting is especially used to protect large structures
  • Such as bridges and pylons
  • Because is if effective but cheaper than metal plating

To access more topics go to the Combined Science Notes page.

By |2017-09-18T10:52:04+00:00May 5th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|Comments Off on Rusting and Painting

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He holds an Honours in Accountancy degree from the University of Zimbabwe. He is passionate about technology and its practical application in today's world.
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