| Título |
Experimental corrosion resistance evaluation of Cr-Mo-Mn steel surface modified with titanium and nitrogen ions |
| Autores |
Sanabria-Martinez, Felipe , Lozada, Linda Elcida Gil , Monrroy-Ceballos, Maria Isabel , Angulo-Rodriguez, Nerismar , Mercado, David Alejandro Miranda , VALBUENA NIÑO, ELY DANNIER |
| Publicación externa |
No |
| Medio |
Emerg. Mater. |
| Alcance |
Review |
| Naturaleza |
Científica |
| Cuartil SJR |
2 |
| Fecha de publicacion |
04/01/2024 |
| ISI |
001136273100001 |
| DOI |
10.1007/s42247-023-00616-7 |
| Abstract |
Ionized particles implanted or deposited upon the uppermost region of certain surfaces by alternative ion implantation techniques produce specific changes in the physicochemical properties of metal-type materials; for this reason, there has been a growing interest in studying the effect of surface modification employing a novel technique based on the generation of a high voltage pulsed discharge and electric arc known as three-dimensional ion implantation. By this mechanism, this paper proposes to evaluate the corrosion resistance of a chromium-molybdenum-manganese low alloy exposed to electrochemical attack; AISI/SAE 4140 steel was surface modified by bombarded with titanium species and a hybrid process with titanium + nitrogen for 5 and 10 min. The performance against corrosion was determined by potentiodynamic electrochemical techniques such as Tafel extrapolation, linear polarization resistance, and electrochemical impedance spectroscopy by using a NaCl (3.5% wt.) solution as the electrolyte; the findings demonstrated that non-modified substrates achieved a corrosion rate of 49.37 mpy; in comparison, implanted substrates and exposed for 10 min with Ti were reduced to 2.89 mpy resulting in the best performance compared with other treatments. This comparison allows the conclusion that the surface modification by 3DII applied on AISI/SAE 4140 enhanced its performance against electrochemical corrosion by diminishing up to 90% of the damage caused in saline environments, validating the beneficial use of ion implantation techniques as a possible solution in several structure applications of steels in the engineering sector. |
| Palabras clave |
Electrochemistry; Ion implantation; Surface engineering; Steel AISI/SAE 4140 |
| Miembros de la Universidad Loyola |
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