Isabel Rute Filipe Cerveira Nunes Fontinha

@lnec.pt

Departamento de Materiais
Laboratório Nacional de Engenharia Civil

Isabel Rute Filipe Cerveira Nunes Fontinha


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https://researchid.co/rfontinha

EDUCATION

PhD (Materials and Ceramic Engineering)

RESEARCH INTERESTS

Durability of metallic materials used in construction and respective metallic and inorganic coatings in natural environments.
Corrosion and conservation of metallic cultural and architectural heritage.
Sol-gel coatings for corrosion protection.
6

Scopus Publications

326

Scholar Citations

7

Scholar h-index

5

Scholar i10-index

Scopus Publications

  • Influence of Exposure Conditions and Particulate Deposition on Anodized Aluminum Corrosion
    Isabel Fontinha, Elsa Eustáquio
    Corrosion and Materials Degradation, 2022
    Anodizing is commonly used for corrosion protection of aluminum and its alloys in the construction industry. The anodic aluminum oxide (AAO) coating has a high ability to prevent the development of extensive pitting corrosion in aluminum substrates, particularly in marine sites, as was observed during a 10-year atmospheric corrosion study carried out in several marine and industrial sites. However, this study also evidenced that this coating can be highly affected by the deposition of particulate material in industrial polluted environments, sometimes in unexpected ways. This study presents information on the atmospheric corrosion of anodized aluminum exposed at two different chemical industrial complexes: a fertilizer production plant and a pulp and paper mill. Visual assessment of surface changes, pitting depth and mass variation with exposure were determined to quantify the degradation suffered. Additionally, SEM/EDS analyses were carried out on the exposed surfaces. Based on the results obtained, the role played by the deposition of airborne particles present in the two environments with respect to the type and level of damage observed is discussed. Deposits of roasted pyrite ash and phosphates or of wood chips and lime particles enhanced pitting corrosion or caused dissolution of the AAO coating.
  • “Modern” metals in building heritage: performance in outdoor applications
    Cadernos do Arquivo Municipal, 2021
  • Hybrid sol-gel coatings: Smart and green materials for corrosion mitigation
    Rita Figueira, Isabel Fontinha, Carlos Silva, Elsa Pereira
    Coatings, 2016
    Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention. Therefore, the development of active corrosion protection systems for metallic substrates is an issue of prime importance. The promising properties and wide application range of hybrid sol-gel-derived polymers have attracted significant attention over recent decades. The combination of organic polymers and inorganic materials in a single phase provides exceptional possibilities to tailor electrical, optical, anticorrosive, and mechanical properties for diverse applications. This unlimited design concept has led to the development of hybrid coatings for several applications, such as transparent plastics, glasses, and metals to prevent these substrates from permeation, mechanical abrasion, and corrosion, or even for decorative functions. Nevertheless, the development of new hybrid products requires a basic understanding of the fundamental chemistry, as well as of the parameters that influence the processing techniques, which will briefly be discussed. Additionally, this review will also summarize and discuss the most promising sol-gel coatings for corrosion protection of steel, aluminium, and their alloys conducted at an academic level.
  • EIS Study of Amine Cured Epoxy-silica-zirconia Sol-gel Coatings for Corrosion Protection of the Aluminium Alloy EN AW 6063
    I R Fontinha, M M Salta, M L Zheludkevich, M G S Ferreira
    Portugaliae Electrochimica Acta, 2013
    The organic-inorganic hybrid sol-gel films, the structure of which comprises interconnected inorganic and organic networks have been reported as an environmentally friendly anti-corrosion pre-treatment for several metals, including aluminium alloys. In this paper, an epoxy-silica-zirconia hybrid sol-gel coating was synthesized from glycidoxypropyltrimethoxysilane (GPTMS) and zirconium npropoxide (TPOZ) precursors and applied to EN AW-6063 alloy by dip-coating. To promote the organic network formation through the epoxy group polymerization at room temperature, two types of amine crosslinkers were added during synthesis: diethylenetriamine (DETA), in different concentrations, and a tri-functional aminosilane. The evolution of the curing process and the corrosion behaviour of the coated aluminium alloy specimens were evaluated by Electrochemical Impedance Spectroscopy (EIS) in 0.5 M NaCl. The morphology and surface chemistry of the hybrid coatings were characterized by Energy Dispersive Spectroscopy (EDS) coupled with Scanning Electron Microscopy (SEM) and by Fourier Transform Infrared Spectroscopy (FTIR). The results obtained revealed that the sol-gel coatings with lower amine ratios required longer curing times, but showed the best anticorrosive performance with time. The increase in amine concentration has led to a more cross linked organic network, resulting in higher initial coatings resistance; however it has turned coatings more hydrophilic, prone to rapid degradation in water.
  • Effect of inorganic content on the performance of anticorrosive hybrid sol-gel coated en AW-6063 alloy
    Rute I. Fontinha, Manuela M. Salta, Mikhail L. Zheludkevich, Mário G.S. Ferreira
    Materials Science Forum, 2013
    The organic-inorganic hybrid sol-gel films have been reported as an effective anti-corrosion and environmentally friendly alternative to Cr(VI) pre-treatment for aluminium alloys. The sol-gel process used to obtain these coatings allows the variation of the different synthesis parameters to achieve coatings with optimized properties. In this work, hybrid films with different Zr/Si ratios were synthesized from glycidoxypropyltrimethoxysilane (GPTMS) and zirconium n-propoxide (TPOZ) precursors. Electrochemical Impedance Spectroscopy (EIS) was used to evaluate the corrosion behaviour of coated aluminium specimens in 0.5 M NaCl solution. The morphology and chemical structure of the hybrid coatings prepared were studied by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS), Fourier Transformed Infrared Spectroscopy (FTIR) and Thermo Gravimetric Analysis (TGA). It was found that increasing Zr/Si ratio leads to a more cross linked inorganic network, resulting in higher initial coatings resistance, but may turn coatings more hydrophilic, prone to rapid degradation in water, due to a less connected organic network. Consequently, the best anticorrosive performance derives from the balance between the two opposite trends and it was achieved with Zr/Si molar ratio of 0.25.
  • Influence of pH on the corrosion protection of epoxy-silica-zirconia sol-gel coatings applied on EN AW-6063 aluminium alloy
    I Rute Fontinha, Maria Manuela Salta, Mikhail L. Zheludkevich, Mário G. S. Ferreira, Rita Bacelar Figueira, et al.
    Ecs Transactions, 2013
    Aluminium alloys of 6000 series can suffer severe corrosion in polluted (acidic) and/or marine environments and in contact with alkaline media like fresh cementitious materials. Therefore, architectural aluminium components are often coated, what requires its surface pre-treatment. Organic-inorganic hybrid (OIH) sol-gel coatings have been proposed as an effective, environmental compliant new pre-treatment for aluminium coating. In this work, an epoxy-silica-zirconia sol-gel coating was synthesized and applied on EN AW-6063 alloy. Cerium nitrate was incorporated as corrosion inhibitor. Cerium doped and undoped OIH coatings were exposed to neutral, acidic (pH~3) and alkaline (pH~10) chloride solutions. Electrochemical impedance spectroscopy (EIS) and SEM/EDS characterization of coated samples revealed that the best performance is achieved in the neutral and the worst in the acidic solution. In the alkaline solution, the cerium doped coatings exhibited much better anticorrosive performance than the undoped ones, clearly evidencing the beneficial role of the corrosion inhibitor in this media.

RECENT SCHOLAR PUBLICATIONS

  • A Corrosão em Imagens
    A Simões, A Sushkova, A Alves, A Franco, AI Sá, AL Mata, AM Pereira, ...
    LNEG-Laboratório Nacional de Energia e Geologia , 2024
    2024
  • Electrochemical techniques for patinas and coatings assessment in conservation studies
    IR Fontinha, MJ Correia, EV Pereira
    Universidade Nova de Lisboa, Departamento de Física LIBPhys-UNL , 2023
    2023
  • DB-HERITAGE-Data on construction materials history
    MJ Correia, A Santos Silva, IR Fontinha
    UM , 2023
    2023
  • Assessment of ferrous building materials
    MJ Correia, IR Fontinha, EV Pereira
    UM , 2023
    2023
  • Influence of exposure conditions and particulate deposition on anodized aluminum corrosion
    IR Fontinha, E Eustáquio
    Corrosion and materials degradation 3 (4), 770-786 , 2022
    2022
    Citations: 4
  • Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation
    R Fontinha
    Coatings , 2022
    2022
  • Metais “modernos” em património edificado: desempenho em ambiente exterior
    R Fontinha
    cadernos do arquivo municipal, 181-204 , 2021
    2021
    Citations: 1
  • Corrosão e conservação de estatuária em ligas de cobre
    R Fontinha, EV Pereira
    Laboratório Nacional de Engenharia Civil , 2017
    2017
    Citations: 1
  • Caixilharia exterior de edifícios recentes. Caso de estudo sobre a durabilidade do seu desempenho
    J Viegas, A Pinto, IR Fontinha, S Antunes
    LNEC , 2016
    2016
  • Nanoindentação em materiais de construção
    EV Pereira, MJ Correia, RB Figueira, IR Fontinha
    LNEC , 2016
    2016
  • Hybrid sol-gel coatings: Smart and green materials for corrosion mitigation
    RB Figueira, IR Fontinha, CJR Silva, EV Pereira
    Coatings 6 (1), 12 , 2016
    2016
    Citations: 177
  • Repositório de materiais de construção com interesse histórico e patrimonial–Projeto DB-HERITAGE
    A Santos Silva, MR Veiga, MJ Correia, M Menezes, M Vieira, ...
    LNEC , 2016
    2016
  • Study of zirconia and silica-zirconia-epoxy sol-gel coatings for corrosion protection of EN AW 6063 aluminium alloy
    IR Fontinha, MM Salta, MGS Ferreira
    DEMAC-U. Aveiro , 2014
    2014
  • Effect of the metallic cleaning and oxidizing pre-treatments on the corrosion behaviour of sol-gel hybrid coated EN AW-6063 alloy
    IR Fontinha, MM Salta, M Zheludkevich, MGS Ferreira
    LNEG , 2014
    2014
    Citations: 2
  • Influence of pH on the corrosion protection of epoxy-silica-zirconia sol-gel coatings applied on EN AW-6063 aluminium alloy
    IR Fontinha, MM Salta, ML Zheludkevich, MGS Ferreira, RB Figueira, ...
    Electrochemical Society Transactions 224 58 (38), 9-16 , 2014
    2014
    Citations: 7
  • EIS study of amine cured epoxy-silica-zirconia sol-gel coatings for corrosion protection of the aluminium alloy EN AW 6063
    IR Fontinha, MM Salta, ML Zheludkevich, MGS Ferreira
    Portugaliae Electrochimica Acta 31 (6), 307-319 , 2013
    2013
    Citations: 53
  • Effect of the metallic surface pre-treatment on the corrosion behaviour of sol-gel hybrid coated EN AW-6063 alloy
    IR Fontinha, MM Salta, M Zheludkevich, MGS Ferreira, RB Figueira, ...
    Sociedade Portuguesa de Materiais , 2013
    2013
  • Effect of inorganic content on the performance of anticorrosive hybrid sol-gel coated EN AW-6063 alloy
    RI Fontinha, MM Salta, ML Zheludkevich, MGS Ferreira
    Materials Science Forum 730, 745-750 , 2013
    2013
    Citations: 3
  • Deposition of hybrid sol-gel films on hot dip galvanized reinforc-ing steel
    RB Figueira, CJR Silva, EV Pereira, IR Fontinha, MM Salta
    Sociedade Portuguesa de Materiais , 2013
    2013
  • NANOSTRUCTURED COATINGS FOR METALLIC CONSTRUCTION MATERIALS PROTECTION
    IR Fontinha, MM Salta, MGS Ferreira
    2012

MOST CITED SCHOLAR PUBLICATIONS

  • Hybrid sol-gel coatings: Smart and green materials for corrosion mitigation
    RB Figueira, IR Fontinha, CJR Silva, EV Pereira
    Coatings 6 (1), 12 , 2016
    2016.0
    Citations: 177
  • EIS study of amine cured epoxy-silica-zirconia sol-gel coatings for corrosion protection of the aluminium alloy EN AW 6063
    IR Fontinha, MM Salta, ML Zheludkevich, MGS Ferreira
    Portugaliae Electrochimica Acta 31 (6), 307-319 , 2013
    2013.0
    Citations: 53
  • Corrosão e conservação de estátuas de liga de cobre
    IR Fontinha, MM Salta
    Corrosão e Protecção de Materiais 27 (3), 87-94 , 2008
    2008.0
    Citations: 15
  • Development and evaluation of new treatments for outdoor bronze monuments
    R Mazzeo, S Bittner, G Farron, R Fontinha, D Job, EM Joseph, P Letardi, ...
    Conservation science 2007, 40-48 , 2008
    2008.0
    Citations: 15
  • Desempenho de componentes metálicos em edifícios
    IR Fontinha, MM Salta
    LNEG-Laboratório Nacional de Energia e Geologia, IP , 2006
    2006.0
    Citations: 13
  • Hybrid sol-gel coatings: smart and green materials for corrosion mitigation, Coatings 6 (2016) 12
    RB Figueira, IR Fontinha, CJR Silva, EV Pereira
    Citations: 8
  • Hybrid sol-gel coatings: Smart and green materials for corrosion mitigation, Coatings 6 (2016)
    RB Figueira, IR Fontinha, CJR Silva, EV Pereira
    Citations: 8
  • Influence of pH on the corrosion protection of epoxy-silica-zirconia sol-gel coatings applied on EN AW-6063 aluminium alloy
    IR Fontinha, MM Salta, ML Zheludkevich, MGS Ferreira, RB Figueira, ...
    Electrochemical Society Transactions 224 58 (38), 9-16 , 2014
    2014.0
    Citations: 7
  • Revestimentos nanoestruturados para protecção de liga de alumínio
    IRFCN Fontinha
    PQDT-Global , 2012
    2012.0
    Citations: 5
  • Influence of exposure conditions and particulate deposition on anodized aluminum corrosion
    IR Fontinha, E Eustáquio
    Corrosion and materials degradation 3 (4), 770-786 , 2022
    2022.0
    Citations: 4
  • Prevenção da corrosão de componentes metálicos da construção
    R Fontinha
    Outubro , 2007
    2007.0
    Citations: 4
  • Influence of sealing process on corrosion behaviour of anodized aluminium
    IR Fontinha, MM Salta, G Vítor
    Proceedings of the EUROCORR , 2005
    2005.0
    Citations: 4
  • Effect of inorganic content on the performance of anticorrosive hybrid sol-gel coated EN AW-6063 alloy
    RI Fontinha, MM Salta, ML Zheludkevich, MGS Ferreira
    Materials Science Forum 730, 745-750 , 2013
    2013.0
    Citations: 3
  • Effect of the metallic cleaning and oxidizing pre-treatments on the corrosion behaviour of sol-gel hybrid coated EN AW-6063 alloy
    IR Fontinha, MM Salta, M Zheludkevich, MGS Ferreira
    LNEG , 2014
    2014.0
    Citations: 2
  • Componentes metálicos na construção: comportamento à corrosão e sua prevenção
    IR FONTINHA, MM SALTA
    Lisboa: Laboratório Nacional de Engenharia Civil , 2007
    2007.0
    Citations: 2
  • Corrosion of aluminium and its anodic coatings. Ten years of natural exposure
    IR Fontinha, M Salta, Portugal
    Prodeeding of EUROMAT, 22-24 , 1998
    1998.0
    Citations: 2
  • Utilização de armaduras revestidas e de materiais resistentes à corrosão. Introdução de inibidores
    MM SALTA, IR FONTINHA
    Seminário da Prevenção da Corrosão em Estruturas de Betão Armado In … , 1996
    1996.0
    Citations: 2
  • Metais “modernos” em património edificado: desempenho em ambiente exterior
    R Fontinha
    cadernos do arquivo municipal, 181-204 , 2021
    2021.0
    Citations: 1
  • Corrosão e conservação de estatuária em ligas de cobre
    R Fontinha, EV Pereira
    Laboratório Nacional de Engenharia Civil , 2017
    2017.0
    Citations: 1
  • A Corrosão em Imagens
    A Simões, A Sushkova, A Alves, A Franco, AI Sá, AL Mata, AM Pereira, ...
    LNEG-Laboratório Nacional de Energia e Geologia , 2024
    2024.0