INVESTIGATION OF MILD STEEL PROTECTION WITH GLASS WOOL IN CORROSIVE MEDIA

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Adebayo Felix Owa
Daniel Toyin Oloruntoba
Muideen Adebayo Bodude
Fisayo Adesina

Abstract

Chemicals are stored and transported from one point to other in glass wares and plastic containers, which are prone to breaking in services.  A study has been made of protection of mild steel lined with various quantity (1.0, 1.5, and 2.0 g) of glass wool exposed to three-corrosive media namely 3.5 wt% NaCl, 0.5M HCl, and 0.5M H2SO4; using weight loss method under static conditions at room temperature and potentiodynamic polarisation test. Weight loss result shown that Mild steels lined with 2.0 g of glass wool were the most adequately protected in the three-corrosive media; in order of corrosion rate values of 0.430 mm/yr in 0.5 M HCl, 0.053 mm/yr in 0.5 H2SO4 and 0.035 mm/yr in 3.5 wt% NaCl, respectively. While the potentiodynamic polarisation result revealed the corrosion rate values as 0.078 mm/yr in 0.5 M H2SO4, 0.057 mm/yr in 0.5 M HCl, and the least was in 3.5 wt% NaCl (0.022 x 10-5 mm/yr). Comparison of the corrosion rate data of the two methods established that glass wool can protect mild steel in the studied environment.

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References

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