Polyaspartic acid as a green corrosion inhibitor for carbon steel

Abstract

The inhibitor effect of the environmentally friendly corrosion inhibitor polyaspartic acid (PASP) on the corrosion of carbon steel in 0.5 M H 2 SO 4 was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). Polarization curve results clearly reveal the fact that PASP is a good anode-type inhibitor. EIS results confirm its corrosion inhibition ability. The inhibition efficiency increases with increasing PASP concentration, and the maximum inhibition efficiency was 80.33% at 10 8C. SEM reveals that a protective film forms on the surface of the inhibited sample. The adsorption of this inhibitor is found to follow the Freundlich adsorption isotherm. A mechanism is proposed to explain the inhibitory action of the corrosion inhibitor.

Synergistic corrosion inhibition of environment-friendly inhibitors on the corrosion of carbon steel in soft water

“…Polyaspartic acid (PASP) and polyepoxysuccinic acid (PESA) are representative green scale inhibitors due to their non-phosphorus and biodegradable features [25], [26], [27] and [28]. Hence, they are valuable in terms of environmental acceptability and waste disposal [29].…”

Environmentally Friendly Corrosion Inhibitors

“…These natural compounds and derivatives have been used as good CIs for mild steel [75][76][77][78][79][80], carbon steel [81][82][83], stainless steel [84], iron [85], nickel [86], copper [87][88][89][90][91], aluminum [92], and alloys [93] and [94] in different aggressive solutions.…”

In-situ preparation, characterization and anticorrosion property of polypropylene glycol/silver nanoparticles composite for mild steel corrosion in acid solution

“…Metals corrosion in aggressive environment deployed in service have been widely studied [1][2][3]. The reason being that metals gradually lost important properties which warranted their use in the http://dx.doi.org/10.1016/j.jcis.2015.09.057 0021-9797/Ó 2015 Elsevier Inc. All rights reserved.…”