Malaysian Journal of Analytical Sciences Vol 18 No 1 (2014): 28 – 36

 

 

 

THE EFFECT OF TEMPERATURE ON MILD STEEL CORROSION IN

1 M HCl BY SCHIFF BASES

 

(Kesan Suhu Terhadap Kakisan Keluli Lembut Dalam 1 M HCl oleh Ligan Bes Schiff)

 

Nor Zakiah Nor Hashim¹* and Karimah Kassim^{1, 2}

 

¹Faculty of Applied Sciences,

 ²Institute of Sciences,

Universiti Teknologi MARA,40450, Shah Alam, Selangor, Malaysia

 

*Corresponding author: norzakiah21@gmail.com

 

 

Abstract

The temperature effects in the range of 25 to 55^oC on the inhibition efficiency of three Schiff bases which were (E)-N¹-benzylidene-N⁴-phenylbenzene-1,4-diamine (K1), N-[(E)-4-chlorobenzylidene-N^’-phenylbenzene-1,4-diamine (K2), and N-[(E)-4-methoxybenzylidene-N^’-phenylbenzene-1,4-diamine (K3) against mild steel in 1 M hydrochloric acid (HCl) solution were studied using polarization method. Thermodynamic adsorption parameter suggests that the inhibitors under study were mixed type inhibitors dominated by anodic reaction and it was found that from all of the three inhibitors, K2 having the highest corrosion inhibition efficiency.

 

Keywords: 1 M HCl, mild steel, Schiff base, temperature, corrosion

 

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