Anti-corrosive element in mild steel

Discussion in 'Chemical | Metallurgy' started by hetangbkd, Jan 17, 2009.

  1. hetangbkd

    hetangbkd Certified CEan

    I would like to know that which is anti-corrosive element in mild steel.
    What i can do to prevent mild steel from rust (corrosion) in mainly monsoon season ?
  2. Kaustubh Katdare

    Kaustubh Katdare Administrator

    Engineering Discipline:
    Electrical
    Thread moved to Metallurgy Engineering section
  3. strider6

    strider6 Certified CEan

    Mild steel has no anti-corrosive element. i mean is not a stainless steel that has chrome and other elemetns. your mild steel will corrode in the atmospher, the only way to protect it is to paint it with a good paint. have a look at these documents:

    http://www.corusconstruction.com/file_source/StaticFiles/Construction/Design%20and%20innovation/Corrosion/corrosion%20(atmos)%20.pdf

    http://resource.npl.co.uk/docs/scie...cations/online_guides/pdf/surface_coating.pdf

    corrosion control methods painting coating

    hope this help

    S
  4. gohm

    gohm Addict

    Engineering Discipline:
    Mechanical
    yeah the smellting/refining aspect gives it some protection however as mentioned to prolong the life of mild steel and add an anti-corrosive element exterior treatment with an inhibitor is your most viable option. por-15 and many other epoxy style coatings are a very durable & economical option.
  5. Dr R.T.Jadhav

    Dr R.T.Jadhav Certified CEan

    There is NO anticorrosive element in mild steel. MS is nothing but Iron. You also cannot prevent its rusting (corrosion) as corrosion is a process which can be minimised but cannot be totally prevented. Various methods are known to minimise corrosion in MS. One is by applying a protective coat such as Painting. Another is Galvanising in which you give a coat of Zinc. The Zinc being more anodic than Iron in the Galvanic series, corrodes at a faster rate (than had it been present alone) and the Iron corrodes at a much reduced rate (than had it been present alone). Thus the Iron or MS gets protected at the cost of the Zinc which is sacrificed.
  6. Kaustubh Katdare

    Kaustubh Katdare Administrator

    Engineering Discipline:
    Electrical
    Wow! Can't believe! Sir, its you on CrazyEngineers!

    CEans, Dr. R.T. Jadhav taught us chemistry when I was in first year of engineering! Welcome to CE, Sir! We are honored to have you to guide us. :)
  7. strider6

    strider6 Certified CEan

    the only "mild Steel" that have some element to prevent corrosion is the weathering steel that contains small amount of copper and other elements that form a layer or patina on the surface and protect from further corrosion.

    weathering steel

    s
  8. Ernesha

    Ernesha Certified CEan

    Engineering Discipline:
    Electronics & Telecommunications
    The anti-corrosion performance of polyaniline–thiokol rubber (PANI/TR) composite coating covered on mild steel exposed to artificial brine and hydrochloric acid environments was evaluated for the first time. The PANI/TR composite coatings were electropolymerized and deposited on mild steel in a nonaqueous solution. EDS, XPS and SEM were all used to characterize the structure as well as the component of the PANI/TR composite coating, which has indicated that its structure would be favorable to the corrosion protection. The results of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) demonstrated that the PANI/TR coating was much better than polyaniline (PANI) coating both in the adhesion to the mild steel substrate and in the corrosion protection. The corrosion potential was about 100 mV more positive for the substrate coated with PANI/TR film than that with PANI. As a result, the corrosion of mild steel can be inhibited greatly by using the PANI/TR composite conductive polymer as a protective layer.
  9. tsmessi

    tsmessi Certified CEan

  10. Dr R.T.Jadhav

    Dr R.T.Jadhav Certified CEan

    The Questioner fundamentally wants toknow IFTHERE IS ANY ELEMENT in Mild steel which can act as an anti corrosive element. The quote above advices on coating.
  11. gohm

    gohm Addict

    Engineering Discipline:
    Mechanical
    I think the OP actually wanted both forms of information as also asking if there is a way to prevent rust during monsoon season.

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