Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media

Garate, Unai; Mardaras, Enara; González, Rodolfo; Arrizubieta, Jon Iñaki; Artola, Garikoitz; Aldazabal, Javier

doi:10.3390/met12061047

Open AccessArticle

Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media

by

Unai Garate

^1,2,

Enara Mardaras

³

,

Rodolfo González

³,

Jon Iñaki Arrizubieta

²

,

Garikoitz Artola

^3,*

and

Javier Aldazabal

^4,5,*

¹

MESHIND, Aliendalde 5, 48200 Durango, Spain

²

Department of Mechanical Engineering, University of the Basque Country, Plaza Torres Quevedo 1, 48013 Bilbao, Spain

³

AZTERLAN, Basque Research and Technology Alliance (BRTA), 48200 Durango, Spain

⁴

Tecnun School of Engineering, University of Navarra, Manuel Lardizabal 13, 20018 San Sebastian, Spain

⁵

Biomedical Engineering Centre, University of Navarra, Campus Universitario, 31080 Pamplona, Spain

^*

Authors to whom correspondence should be addressed.

Metals 2022, 12(6), 1047; https://doi.org/10.3390/met12061047

Submission received: 31 May 2022 / Revised: 14 June 2022 / Accepted: 18 June 2022 / Published: 19 June 2022

(This article belongs to the Special Issue Metals for Biomedical Applications: From Experiments to Computer Models)

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Abstract

A multilayer laser-deposited lining of AISI 316L stainless steel makes a regular structural steel surface corrosion resistant in physiological media. Despite the application of single-layer stainless-steel linings being economically beneficial and allowing thinner surface modifications, dilution effects that modify the pitting resistance of the coating must be accounted for. In order to study the feasibility of employing single-layer coatings instead of multilayer coatings for corrosion protection in physiological media, a polarization testing back-to-back comparison was performed between laser-deposited AISI 316L monolayers on 42CrMo4 quenched and tempered steel and cold-rolled AISI 316L sheet in Dulbecco’s Phosphate Buffer Solution at 36 °C. A higher dispersion in pitting resistance, ranging from 800 mV to 1200 mV, was found on the coated samples, whereas the cold-rolled material was more stable in the 1200 mV range. The resulting differences in corrosion rates and pitting potentials open the discussion on whether the chemical composition deviations on AISI 316L dilution layers are acceptable in terms of surface functionality in medical devices.

Keywords: laser metal deposition; additive manufacturing; stainless steel; biomaterials; polarization; physiological media; corrosion; single layer; dilution

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MDPI and ACS Style

Garate, U.; Mardaras, E.; González, R.; Arrizubieta, J.I.; Artola, G.; Aldazabal, J. Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media. Metals 2022, 12, 1047. https://doi.org/10.3390/met12061047

AMA Style

Garate U, Mardaras E, González R, Arrizubieta JI, Artola G, Aldazabal J. Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media. Metals. 2022; 12(6):1047. https://doi.org/10.3390/met12061047

Chicago/Turabian Style

Garate, Unai, Enara Mardaras, Rodolfo González, Jon Iñaki Arrizubieta, Garikoitz Artola, and Javier Aldazabal. 2022. "Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media" Metals 12, no. 6: 1047. https://doi.org/10.3390/met12061047

APA Style

Garate, U., Mardaras, E., González, R., Arrizubieta, J. I., Artola, G., & Aldazabal, J. (2022). Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media. Metals, 12(6), 1047. https://doi.org/10.3390/met12061047

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Influence of the Laser Deposited 316L Single Layers on Corrosion in Physiological Media

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