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Moldovan ER, Concheso Doria C, Ocaña JL, Istrate B, Cimpoesu N, Baltes LS, Stanciu EM, Croitoru C, Pascu A, Munteanu C, Tierean MH. Morphological Analysis of Laser Surface Texturing Effect on AISI 430 Stainless Steel. Materials 2022; 15:ma15134580. [PMID: 35806705 PMCID: PMC9267422 DOI: 10.3390/ma15134580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/19/2022] [Accepted: 06/28/2022] [Indexed: 12/14/2022]
Abstract
Laser surface texturing (LST) is a method to obtain micro-structures on the material’s surface for improving tribological performances, wetting tuning, surface treatment, and increasing adhesion. The material selected for LST is AISI 430 ferritic stainless steel, distinguished by the low cost in manufacturing, corrosion resistance, and high strength at elevated temperature. The present study addresses the morphology of new pattern designs (crater array, ellipse, and octagonal shapes). The patterns are applied on the stainless-steel surface by a non-contact method with high quality and precision nanosecond pulsed laser equipment. The investigation of laser parameter influence on thermal affected area and micro-structures is accomplished by morphological and elemental analysis (SEM + EDX). The parameters of the laser micro-patterning have a marked influence on the morphology, creating groove-type sections with different depths and recast material features. From the SEM characterization, the highest level of recast material is observed for concentric octagon LST design. Its application is more recommended for the preparation of the metal surface before hybrid welding. Additionally, the lack of the oxygen element in the case of this design suggests the possible use of the pattern in hybrid joining.
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Affiliation(s)
- Edit Roxana Moldovan
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (E.M.S.); (C.C.); (A.P.)
| | - Carlos Concheso Doria
- BSH Electrodomésticos España, S.A., Avda. de la Industria 49, 50016 Zaragoza, Spain;
| | - José Luis Ocaña
- Departamento de Física Aplicada e Ingeniería de Materiales, Universidad Politecnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain;
| | - Bogdan Istrate
- Mechanical Engineering Department, Gheorghe Asachi Technical University of Iași, 43 Dimitrie Mangeron Blvd., 700050 Iași, Romania; (B.I.); (C.M.)
| | - Nicanor Cimpoesu
- Materials Science Department, Gheorghe Asachi Technical University of Iași, 43 Dimitrie Mangeron Blvd., 700050 Iași, Romania;
| | - Liana Sanda Baltes
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (E.M.S.); (C.C.); (A.P.)
- Correspondence: (L.S.B.); (M.H.T.); Tel.: +40-724-546929 (L.S.B.); +40-744-482284 (M.H.T.)
| | - Elena Manuela Stanciu
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (E.M.S.); (C.C.); (A.P.)
| | - Catalin Croitoru
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (E.M.S.); (C.C.); (A.P.)
| | - Alexandru Pascu
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (E.M.S.); (C.C.); (A.P.)
| | - Corneliu Munteanu
- Mechanical Engineering Department, Gheorghe Asachi Technical University of Iași, 43 Dimitrie Mangeron Blvd., 700050 Iași, Romania; (B.I.); (C.M.)
- Technical Sciences Academy of Romania, 26 Dacia Blvd., 030167 Bucharest, Romania
| | - Mircea Horia Tierean
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (E.M.S.); (C.C.); (A.P.)
- Correspondence: (L.S.B.); (M.H.T.); Tel.: +40-724-546929 (L.S.B.); +40-744-482284 (M.H.T.)
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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 (Basel) 2022; 15:ma15082955. [PMID: 35454645 PMCID: PMC9028002 DOI: 10.3390/ma15082955] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 12/17/2022]
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.
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Affiliation(s)
- Edit Roxana Moldovan
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
| | - Carlos Concheso Doria
- BSH Electrodomésticos España, S.A., Avda. de la Industria 49, 50016 Zaragoza, Spain;
| | - José Luis Ocaña
- Departamento de Física Aplicada e Ingeniería de Materiales, Universidad Politecnica de Madrid, C/ José Gutiérrez Abascal 2, 28006 Madrid, Spain;
| | - Liana Sanda Baltes
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
| | - Elena Manuela Stanciu
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
| | - Catalin Croitoru
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
| | - Alexandru Pascu
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
| | - Ionut Claudiu Roata
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
| | - Mircea Horia Tierean
- Materials Engineering and Welding Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania; (E.R.M.); (L.S.B.); (E.M.S.); (C.C.); (A.P.); (I.C.R.)
- Correspondence: ; Tel.: +40-744-482284
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