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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.18 [2011] >
IJCT Vol.18(4) [July 2011] >
| Title: | Corrosion behaviour of mild steel in aqueous acetic acid solutions containing different amounts of formic acid |
| Authors: | Singh, S K
Mukherjee, A K
Singh, M M |
| Keywords: | Mild steel
Acetic acid
Formic acid
Passivity
Corrosion |
| Issue Date: | Jul-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The kinetics of mild steel corrosion in 20:0,
19:1, 18:2 and 15:5 (v/v%) aqueous mixture of acetic and formic acids has been
investigated by weight loss and potentiostatic polarization techniques. The
effects of composition of electrolyte and temperature on the corrosion rate of
mild steel have been evaluated. The corrosion rate of mild steel increased
linearly with temperature as well as amount of formic acid in the mixture.
Anodic polarization curves exhibited active nature over the whole range of
potential at each composition and temperature. Addition of sodium acetate to
the mixture led to the transition from active to active-passive-transpassive
behaviour in the solutions having lower concentration of formic acid. On replacing sodium acetate by sodium
formate, and sodium sulphate, no change in the nature of polarization behaviour
is observed. |
| Page(s): | 291-300 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.18(4) [July 2011]
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