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Volume 15
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10.3390/ma15082955
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Article

Wettability and Surface Roughness Analysis of Laser Surface Texturing of AISI 430 Stainless Steel

by
Edit Roxana Moldovan
1,
Carlos Concheso Doria
2,
José Luis Ocaña
3,
Liana Sanda Baltes
1,
Elena Manuela Stanciu
1,
Catalin Croitoru
1,
Alexandru Pascu
1,
Ionut Claudiu Roata
1 and
Mircea Horia Tierean
1,*
1
Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania
2
BSH Electrodomésticos España, S.A., Avda. de la Industria 49, 50016 Zaragoza, Spain
3
Departamento de Física Aplicada e Ingeniería de Materiales, Universidad Politecnica de Madrid, C/ José Gutiérrez Abascal 2, 28006 Madrid, Spain
*
Author to whom correspondence should be addressed.
Materials 2022, 15(8), 2955; https://doi.org/10.3390/ma15082955
Submission received: 19 March 2022 / Revised: 13 April 2022 / Accepted: 15 April 2022 / Published: 18 April 2022
(This article belongs to the Special Issue Multifunctional Coatings: From Protective to Bio-Applications)
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Abstract

Due to its wide applicability in industry, devising microstructures on the surface of materials can be easily implemented and automated in technological processes. Laser Surface Texturing (LST) is applied to modify the chemical composition, morphology, and roughness of surfaces (wettability), cleaning (remove contaminants), reducing internal stresses of metals (hardening, tempering), surface energy (polymers, metals), increasing the adhesion (hybrid joining, bioengineering) and decreasing the growth of pathogenic bacteria (bioengineering). This paper is a continuation and extension of our previous studies in laser-assisted texturing of surfaces. Three different patterns (crater array-type C, two ellipses at 90° overlapping with its mirror-type B and 3 concentric octagons-type A) were applied with a nanosecond pulsed laser (active medium Nd: Fiber Diode-pumped) on the surface of a ferritic stainless steel (AISI 430). Micro texturing the surface of a material can modify its wettability behavior. A hydrophobic surface (contact angle greater than 90°) was obtained with different variations depending on the parameters. The analysis performed in this research (surface roughness, wettability) is critical for assessing the surface functionality, characteristics and properties of the stainless steel surface after the LST process. The values of the surface roughness and the contact angle are directly proportional to the number of repetitions and inversely proportional to the speed. Recommendations for the use of different texturing pattern designs are also made.
Keywords: surface roughness; wettability; surface laser texturing; surface patterning; ferritic stainless steel surface roughness; wettability; surface laser texturing; surface patterning; ferritic stainless steel

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MDPI and ACS Style

Moldovan, E.R.; Concheso Doria, C.; Ocaña, J.L.; Baltes, L.S.; Stanciu, E.M.; Croitoru, C.; Pascu, A.; Roata, I.C.; Tierean, M.H. Wettability and Surface Roughness Analysis of Laser Surface Texturing of AISI 430 Stainless Steel. Materials 2022, 15, 2955. https://doi.org/10.3390/ma15082955

AMA Style

Moldovan ER, Concheso Doria C, Ocaña JL, Baltes LS, Stanciu EM, Croitoru C, Pascu A, Roata IC, Tierean MH. Wettability and Surface Roughness Analysis of Laser Surface Texturing of AISI 430 Stainless Steel. Materials. 2022; 15(8):2955. https://doi.org/10.3390/ma15082955

Chicago/Turabian Style

Moldovan, Edit Roxana, Carlos Concheso Doria, José Luis Ocaña, Liana Sanda Baltes, Elena Manuela Stanciu, Catalin Croitoru, Alexandru Pascu, Ionut Claudiu Roata, and Mircea Horia Tierean. 2022. "Wettability and Surface Roughness Analysis of Laser Surface Texturing of AISI 430 Stainless Steel" Materials 15, no. 8: 2955. https://doi.org/10.3390/ma15082955

APA Style

Moldovan, E. R., Concheso Doria, C., Ocaña, J. L., Baltes, L. S., Stanciu, E. M., Croitoru, C., Pascu, A., Roata, I. C., & Tierean, M. H. (2022). Wettability and Surface Roughness Analysis of Laser Surface Texturing of AISI 430 Stainless Steel. Materials, 15(8), 2955. https://doi.org/10.3390/ma15082955

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