Materials Science, Metals and Alloys, Electrochemistry, Surfaces, Coatings and Films
17
Scopus Publications
148
Scholar Citations
6
Scholar h-index
4
Scholar i10-index
Scopus Publications
Investigating the impact of nanostructured Nb2O5-based coating on the corrosion and corrosion-fatigue resistance of 2198-T8 aluminium alloy Uriel Darhê Oudinot Dias Rangel, Murilo Oliveira Alves Ferreira, Natália Bueno Leite Slade, Rogério Valentim Gelamo, Carlos Antônio Reis Pereira Baptista, Haroldo Cavalcanti Pinto, Igor Mota, Guilherme Yuuki Koga, Hugo Manuel Brito Águas, Witor Wolf, Jéferson Aparecido Moreto Journal of Materials Research, 2026 This investigation examined the efficacy of Nb₂O₅-based coatings, deposited by using the reactive sputtering technique, on the corrosion and corrosion-fatigue behaviour of 2198-T8 aluminium alloy used as aircraft material. Global corrosion behaviour was accessed by Open Circuit Potential (OCP), Potentiodynamic Polarization curves (PPc) and Electrochemical Impedance Spectroscopy (EIS) techniques in 0.6 mol L⁻1 NaCl solution. Fatigue crack growth (FCG) tests were conducted under controlled loading conditions in both air and saline environments. Comprehensive structural and morphological characterisations were performed using advanced microscopy and spectroscopy techniques, including Atomic Force Microscopy (AFM), Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy (SEM/EDX), Raman spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), and Electron Backscatter Diffraction (EBSD). The results unequivocally demonstrated the protective nature of the coating, significantly enhancing the alloy's durability as evidenced by corrosion and fatigue-corrosion tests. These findings underscore the substantial potential of Nb₂O₅ coatings in extending the service life of 2198-T8 aluminium alloy when subjected to aggressive environments, thereby providing invaluable data for aerospace engineering applications. Graphical abstract
Improving the Corrosion Resistance of Titanium by PAA/Chitosan Bilayer Architecture Through the Layer-by-Layer Method Daniele Morais Dias, Murilo Oliveira Alves Ferreira, Ana Paula Ramos, Witor Wolf, Jéferson Aparecido Moreto, Rodrigo Galo Polysaccharides, 2025 To enhance interaction with the host tissue and protect the metal surface, various surface treatments can be applied to dental implants. This study aimed to produce layer-by-layer (LbL) films by alternated immersion of the titanium sample into polyacrylic acid (PAA) and chitosan solutions, obtaining a PAA/chitosan bilayer architecture, seeking to improve the corrosion resistance. For this purpose, 03 experimental groups (n = 05) were performed: Ti-Cp (as control), Ti-Cp+8 bilayers PAA/chitosan, and Ti-Cp+12 bilayers PAA/chitosan. The corrosion behavior was assessed by using open-circuit potential (OCP), potentiodynamic polarization curves (PPcs) and electrochemical impedance spectroscopy (EIS) techniques, conducted in 0.9 wt% NaCl solution at a controlled temperature of 25 ± 1 °C. The samples were characterized morphologically and structurally by atomic force microscope (AFM), scanning electron microscopy/energy-dispersive X-ray (SEM/EDX), and X-ray diffraction (XRD) techniques before and after the corrosion tests. The electrochemical results significantly highlight the beneficial influence of coatings based on PAA/chitosan in enhancing the corrosion resistance of titanium. These findings not only corroborate the feasibility of using alternative materials for the protection of titanium but also open new possibilities for the development of innovative coatings that can be applied within the biomedical sector, serving as mediators for medicinal purposes, particularly in osteoconductive interventions.
Corrosion and solid-state properties of Nb2O5 coating deposited on Ti-6Al-4V Alloy via DC reactive sputtering João Pedro Lopes do Nascimento, Murilo Oliveira Alves Ferreira, Rogério Valentim Gelamo, Rui Miguel da Silva Sampaio, Natália Bueno Leite Slade, Jéferson Aparecido Moreto, João Carlos Salvador Fernandes Electrochimica Acta, 2025 • The reactive sputtering technique was advantageous for the deposition of Nb 2 O 5 on the Ti-6Al-4 V alloy. • Ti-6Al-4V/Nb 2 O 5 exhibits superior corrosion resistance compared to bare Ti-6Al-4 V alloy. • The Nb 2 O 5 coating deposited on Ti-6Al-4 V alloy surfaces by DC reactive sputtering exhibits n-type semiconducting characteristics. • The modified electrode surface presented a lower Urbach energy. • An evident relationship exists between the solid-state properties of the Nb₂O₅ coating and its ability to enhance the corrosion resistance of the Ti-6Al-4 V alloy. This study investigates the surface modification of Ti-6Al-4V alloy substrates via Nb₂O₅ coatings deposited through reactive sputtering. The solid-state properties and corrosion behaviour of the Nb₂O₅ coatings were analysed using electrochemical techniques and optical ellipsometry. The results demonstrate a significant enhancement in the corrosion resistance of the Ti-6Al-4V/Nb₂O₅ system compared to the uncoated alloy. The Nb₂O₅ thin film exhibits n-type semiconducting behaviour with a donor concentration of approximately 10¹⁶ cm⁻³. Photoelectrochemical studies revealed energy band gaps of 3.39 eV for Ti-6Al-4V and 3.27 eV for Ti-6Al-4V/Nb₂O₅ and a lower Urbach energy (0.44 eV) for the coated system compared to the substrate (0.68 eV), indicating that the coatings produced via reactive sputtering effectively reduced the energy states linked to defects and imperfections, acting as a passivating layer for the Ti-6Al-4V surface and enhancing its corrosion resistance. These findings establish a clear relationship between the solid-state properties of the Nb₂O₅ coating and its ability to enhance the corrosion resistance of the Ti-6Al-4V alloy.
Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb2O5 Coating Murilo Oliveira Alves Ferreira, Witor Wolf, Rogério Valentim Gelamo, Natália Bueno Leite Slade, Rodrigo Galo, Renato Goulart Jasinevicius, Carlos Alberto Fortulan, Jéferson Aparecido Moreto Materials, 2025 The Ti-6Al-4V alloy is widely used in orthopedic and dental implants due to its excellent mechanical, corrosion, and biological properties. However, it exhibits several limitations that can compromise its performance in clinical applications. Notably, the alloy suffers from a high coefficient of friction, which can lead to increased wear and reduced longevity of implants under relative movement conditions. Additionally, Ti-6Al-4V shows susceptibility to localized corrosion in physiological environments, particularly in the presence of bodily fluids that may result in the formation of pitting. These challenges underscore the need for surface modifications that can enhance the alloy’s tribological performance, thereby improving its overall efficacy and durability as a biomaterial in medical settings. In this context, the manuscript presents applied and innovative research that assesses the impact of implementing nanostructured Nb2O5 coatings through the reactive sputtering technique on the wear performance of Ti-6Al-4V alloy under both air and artificial saliva (AS) solution conditions using a Pin-on-Disk apparatus. The nanostructured Nb2O5 coating demonstrated the ability to reduce the wear rate and volume by up to 88% without inducing any modifications to the Ra and Rt of Ti-6Al-4V, a feature that is desirable for applications in implantable devices. The reduction in wear can be attributed to the shift from adhesive wear mechanisms on uncoated surfaces to abrasive mechanisms on coated surfaces. This research highlights the strategic advantage of utilizing Brazil’s abundant niobium resources to advance biomaterial technology and facilitate applications that benefit public health.
The Use of Nanosecond Pulsed Fibre Laser Treatment to Improve the Corrosion Resistance of 316L SS Utilised as Surgical Devices Vinicius da Silva Neves, Felipe Queiroz Correa, Murilo Oliveira Alves Ferreira, Alessandro Roger Rodrigues, Witor Wolf, Rodrigo Galo, Fátima Maria Mitsue Yasuoka, Jéferson Aparecido Moreto Materials, 2024 The nanosecond pulsed fibre laser (NsPFL) treatment is extensively employed to distinguish hospital surgical instruments (micro-surgical forceps, surgical blades, orthopaedic drills, and high-precision laparoscopic tools), which are generally composed of stainless steel. Nevertheless, if the laser parameters are not properly optimised, this process may unintentionally provoke corrosion. Maintaining the structural integrity of these materials is essential for ensuring patient safety and minimising long-term costs. This work aims to optimise the laser scanning parameters for marking 316L stainless steel (316L SS), seeking to improve its corrosion resistance. The corrosion behaviour was assessed by using open circuit potential (OCP), potentiodynamic polarisation curves (PPc), and electrochemical impedance spectroscopy (EIS) techniques, conducted in 0.9% wt NaCl solution at a controlled temperature of 25 ± 1 °C. A comprehensive study employing optical profilometry has significantly enhanced our understanding of the corrosion micromechanisms of 316L SS, comparing specimens both with and without NsPFL treatment. Considering applications involving environments rich in chloride ions, the results indicated that the NsPFL-316L SS samples demonstrated markedly enhanced performance compared to the untreated base material after 48 h of immersion in 0.9% wt NaCl solution. This improvement is particularly noteworthy given the widespread utilisation of 316L SS in the manufacturing of surgical instruments, where corrosion resistance is of paramount importance.
Enhancing the corrosion protection of Ti-6Al-4V alloy through reactive sputtering niobium oxide thin films João Pedro Lopes do Nascimento, Murilo Oliveira Alves Ferreira, Rogério Valentim Gelamo, Jair Scarmínio, Teresa Tromm Steffen, Brunela Pereira da Silva, Idalina Vieira Aoki, Adilar Gonçalves dos Santos Jr, Victor Velho de Castro, Célia de Fraga Malfatti, Jeferson Aparecido Moreto Surface and Coatings Technology, 2021
Lactation of the Sow S Ferreira, D Outor-Monteiro, J Simões Encyclopedia of Livestock Medicine for Large Animal and Poultry Production … , 2026 2026 Citations: 4
Investigating the impact of nanostructured Nb 2 O 5 -based coating on the corrosion and corrosion-fatigue resistance of 2198-T8 aluminium alloy UDOD Rangel, MOA Ferreira, NBL Slade, RV Gelamo, CARP Baptista, ... Journal of Materials Research 41 (1), 95-113 , 2026 2026 Citations: 3
Numerical modelling of pitting corrosion’s impact on 2524-T3 alloy mechanical properties MCZE Ferreira, MOA Ferreira, KR Santos, ML Ribeiro, JA Moreto Materials Letters 402, 1-5 , 2026 2026
Mechanical and corrosion behaviour of 316L stainless steel processed by wire arc additive manufacturing (WAAM) FM de Brito Neto, MOA Ferreira, SAC dos Santos, JN Pereira, DLC Meza, ... Progress in Additive Manufacturing 10 (9), 6453-6469 , 2025 2025 Citations: 10
The role of Nb2O5-based coatings in improving the corrosion resistance of friction stir welded 2198-T8 aluminium alloy in NaCl environment MOA Ferreira, LC Mendes, UDOD Rangel, RV Gelamo, NBL Slade, ... Materials Today Communications, 113668 , 2025 2025
Numerical modelling of pitting corrosion’s impact on 2524-T3 alloy mechanical properties MCZE Ferreira, MOA Ferreira, KR dos Santos, ML Ribeiro, JA Moreto Materials Letters, 139338 , 2025 2025
Corrosion and solid-state properties of Nb2O5 coating deposited on Ti-6Al-4V Alloy via DC reactive sputtering JPL do Nascimento, MOA Ferreira, RV Gelamo, RM da Silva Sampaio, ... Electrochimica Acta 530, 146323 , 2025 2025 Citations: 3
Improving the Corrosion Resistance of Titanium by PAA/Chitosan Bilayer Architecture Through the Layer-by-Layer Method DM Dias, MOA Ferreira, AP Ramos, W Wolf, JA Moreto, R Galo Polysaccharides 6 (3), 57 , 2025 2025
Fatigue-Corrosion Studies on the 2198-T851 (Al–Cu–Li) Alloy Containing Nb2O5 Sputtered Coating MOA Ferreira, KR dos Santos, RV Gelamo, NBL Slade, CAR Baptista, ... Journal of Applied Mechanics and Technical Physics 66 (3), 620-632 , 2025 2025
Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb 2 O 5 Coating MOA Ferreira, W Wolf, RV Gelamo, NBL Slade, R Galo, RG Jasinevicius, ... Materials 18 (7), 1593 , 2025 2025 Citations: 4
A utilização de circuitos elétricos equivalentes (CEES) como uma ferramenta fundamental na análise de dados de espectroscopia de impedância eletroquímica ALO Lopes, MOA Ferreira, JA Moreto Livro de Resumos Expandidos , 2025 2025
Avaliação do comportamento de fadiga-corrosão da liga de alumínio 2524-T3 contendo filmes nanoestruturados de Nb2O5 KR Santos, MOA Ferreira, JA Moreto Livro de Resumos Expandidos , 2025 2025
Modelagem numérica do efeito da corrosão localizada nas propriedades mecânicas da liga 2524-T3 para aplicações aeronáuticas MCZE Ferreira, MOA Ferreira, JA Moreto, ML Ribeiro Livro de Resumos Expandidos , 2025 2025
Efeito de revestimentos nanoestruturados de pentóxido de nióbio na corrosão uniforme e localizada da liga de alumínio 2198-T8 (Al-Cu-Li) soldada via FSW LM Campos, MOA Ferreira, JA Moreto, UDOD Rangel Livro de Resumos Expandidos , 2025 2025
Estudo do processo de texturização via laser nanossegundo no aço 316l SS: uma alternativa contra a corrosão VS Neves, MOA Ferreira, FMM Yasuoka, JA Moreto Livro de Resumos Expandidos , 2025 2025
Revestimentos anticorrosivos à base de nb2o5 na liga de magnésio we43 (MG-Y-ND-ZR) MH Oliveira, YAE Villada, MOA Ferreira, JA Moreto Livro de Resumos Expandidos , 2025 2025
A influência do processo de texturização via laser nanossegundos no processo de corrosão global do aço 316L SS para aplicação biomédica WP Reis, MOA Ferreira, FMM Yasuoka, JA Moreto Livro de Resumos Expandidos , 2025 2025
Investigating the impact of nanostructured Nb UDOD Rangel, MOA Ferreira, NBL Slade, RV Gelamo, CA Reis, ... 2025
Fatigue-corrosion studies on the 2198-T851 (Al–Cu–Li) alloy containing Nb O sputtered coating MOA Ferreira, KR dos Santos, RV Gelamo, NB Leite, CAR Baptista, ... Прикладная механика и техническая физика 66 (3), 232-232 , 2025 2025
Corrosion and solid-state properties of Nb2O5 coating deposited on Ti-6Al-4V Alloy via DC reactive sputtering JPL Nascimento, MOA Ferreira, RV Gelamo, RMS Sampaio, NBL Slade, ... Electrochimica Acta 530, 1-11 art. 146323 , 2025 2025
MOST CITED SCHOLAR PUBLICATIONS
Enhancing the corrosion protection of Ti-6Al-4V alloy through reactive sputtering niobium oxide thin films JPL do Nascimento, MOA Ferreira, RV Gelamo, J Scarmínio, TT Steffen, ... Surface and Coatings Technology 428, 127854 , 2021 2021 Citations: 40
Niobium and carbon nanostructured coatings for corrosion protection of the 316L stainless steel MOA Ferreira, FE Mariani, NB Leite, RV Gelamo, IV Aoki, A De Siervo, ... Materials Chemistry and Physics 312, 128610 , 2024 2024 Citations: 21
Effect of niobium oxide thin film on the long-term immersion corrosion of the 2198-T851 aluminium alloy MOA Ferreira, RV Gelamo, CEB Marino, BP da Silva, IV Aoki, MS da Luz, ... Materialia 22, 101407 , 2022 2022 Citations: 19
Mechanical and corrosion behaviour of 316L stainless steel processed by wire arc additive manufacturing (WAAM) FM de Brito Neto, MOA Ferreira, SAC dos Santos, JN Pereira, DLC Meza, ... Progress in Additive Manufacturing 10 (9), 6453-6469 , 2025 2025 Citations: 10
The potentialities of Raman and XPS techniques to evaluate the corrosion products formed on the 2198-T851 aluminium alloy exposed to sodium chloride solution MOA Ferreira, JPL Nascimento, NB Leite, A Siervo, GL Fernandes, ... Materials Research 26, e20220453 , 2023 2023 Citations: 9
Effect of Nb 2 O 5 coating on the corrosion resistance of the 7050-T7451 aluminium alloy MOA Ferreira, GTL Teixeira, NB Leite, RV Gelamo, HC Pinto, IV Aoki, ... Emergent Materials 6 (6), 2001-2017 , 2023 2023 Citations: 8
Development of a low-cost ball-on-flat linear reciprocating apparatus: test validation using Ti-6Al-4V and Ti-6Al-4V/Nb2O5 coatings TI Silva, MOA Ferreira, JPL Nascimento, LR Pietro, LC Neto, HC Moreira, ... Journal of Material Science and Technology Research 9 (1), 43-52 , 2022 2022 Citations: 6
Enhancing the Wear Performance of 316L Stainless Steel with Nb 2 O 5 Coatings Deposited via DC Sputtering at Room Temperature under Varied Environmental … MOA Ferreira, VAF Morgado, KR dos Santos, RV Gelamo, FE Mariani, ... Lubricants 12 (10), 345 , 2024 2024 Citations: 5
The positive impact of the reactive sputtered nanostructured Nb 2 O 5 coatings to reduce the FCG rates of the 2524-T3 alloy in an aggressive medium MOA Ferreira, KR dos Santos, DG Bon, RV Gelamo, R Galo, NB Leite, ... Emergent Materials 7 (5), 2129-2141 , 2024 2024 Citations: 5
Validation of the OAKS prognostic model for acute kidney injury after gastrointestinal surgery BJS open 6 (1), zrab150 , 2022 2022 Citations: 5
Lactation of the Sow S Ferreira, D Outor-Monteiro, J Simões Encyclopedia of Livestock Medicine for Large Animal and Poultry Production … , 2026 2026 Citations: 4
Advances in Enhancing the Wear Performance of Ti-6Al-4V Biomedical Alloy Through Nb 2 O 5 Coating MOA Ferreira, W Wolf, RV Gelamo, NBL Slade, R Galo, RG Jasinevicius, ... Materials 18 (7), 1593 , 2025 2025 Citations: 4
Investigating the impact of nanostructured Nb 2 O 5 -based coating on the corrosion and corrosion-fatigue resistance of 2198-T8 aluminium alloy UDOD Rangel, MOA Ferreira, NBL Slade, RV Gelamo, CARP Baptista, ... Journal of Materials Research 41 (1), 95-113 , 2026 2026 Citations: 3
Corrosion and solid-state properties of Nb2O5 coating deposited on Ti-6Al-4V Alloy via DC reactive sputtering JPL do Nascimento, MOA Ferreira, RV Gelamo, RM da Silva Sampaio, ... Electrochimica Acta 530, 146323 , 2025 2025 Citations: 3
The Use of Nanosecond Pulsed Fibre Laser Treatment to Improve the Corrosion Resistance of 316L SS Utilised as Surgical Devices VS Neves, FQ Correa, MOA Ferreira, AR Rodrigues, W Wolf, R Galo, ... Materials 17 (24), 6178 , 2024 2024 Citations: 2
Corrosion behaviour of the Ti-6Al-4V alloy after functionalization by polyacrylic acid using plasma-enhanced chemical vapor deposition GTL Teixeira, MOA Ferreira, RV Gelamo, MMS Obata, HF Perini, ... Emergent Materials 7 (5), 2143-2161 , 2024 2024 Citations: 2
The use of POPE phospholipid as a first-layer coating of the Ti-6Al-4V alloy: preliminary studies JPL Nascimento, MOA Ferreira, GTL Teixeira, NB Leite, IV Aoki, ... Orbital: The Electronic Journal of Chemistry 16 (1), 10-16 , 2024 2024 Citations: 2
Numerical modelling of pitting corrosion’s impact on 2524-T3 alloy mechanical properties MCZE Ferreira, MOA Ferreira, KR Santos, ML Ribeiro, JA Moreto Materials Letters 402, 1-5 , 2026 2026
The role of Nb2O5-based coatings in improving the corrosion resistance of friction stir welded 2198-T8 aluminium alloy in NaCl environment MOA Ferreira, LC Mendes, UDOD Rangel, RV Gelamo, NBL Slade, ... Materials Today Communications, 113668 , 2025 2025
Numerical modelling of pitting corrosion’s impact on 2524-T3 alloy mechanical properties MCZE Ferreira, MOA Ferreira, KR dos Santos, ML Ribeiro, JA Moreto Materials Letters, 139338 , 2025 2025
