Corrosion

Materia Nova has a long-term expertise in corrosion protection and evaluation. Alternative to hexavalent chromium is one of the most important goal of the centre in this field :  conversion or passivation treatments, hard chromium deposition or developing new effective anti-corrosive pigments. Evaluation methodologies based on classical ageing tests or on electrochemical techniques are continuously improved to provide deep understanding of corrosion mechanisms or to evaluate coating performances.

Expertises

  • Development of alternative passivation or conversion treatments based on hybrid organic/inorganic coatings applied by sol gel or by plasma (PECVD)
  • Synthesis of inhibitor nanocontainers as innovative anti-corrosion pigments for self-healing properties
  • Application of cataphoretic coatings and study of the influence of the application parameters (voltage, temperature,…) on the coating performances
  • Development of specific evaluation methods based on electrochemical techniques
  • Evaluation of the compatibility of pretreatments with an organic coatings in terms of adherence, edge protection,… .

Contact

Mireille Poelman
Program Leader

Publications / Patents

[1] M. Poelman, M. Fedel, C. Motte, D. Lahem, Th. Urios, Y. Paint, F. Deflorian, M.-G. Olivier “Influence of formulation and application parameters on the performances of a sol–gel/clay nanocomposite on the corrosion resistance of hot-dip galvanized steel. Part I. Study of the sol preparation parameters” Surface & Coatings Technology 274 (2015) 1 – 8

[2] M. Fedel, M. Poelman, M. Zago, C. Vandermiers, D. Cossement, M.-G. Olivier, F. Deflorian “Influence of formulation and application parameters on the performances of a sol–gel/clay nanocomposite on the corrosion resistance of hot-dip galvanized steel. Part II. Effect of curing temperature and time” Surface & Coatings Technology 274 (2015) 9 – 17

[3] V. R. Capelossi, M. Poelman, I. Recloux, R.P.B. Hernandez, H.G. de Melo, M.G. Olivier “Corrosion protection of clad 2024 aluminum alloy anodized in tartaric-sulfuric acid bath and protected with hybrid sol–gel coating” Electrochimica Acta 124 (2014) 69-79

[4] S. Ershov, M.-E. Druart, M. Poelman, D. Cossement, R. Snyders, M.-G. Olivier “Deposition of cerium oxide thin films by reactive magnetron sputtering for the development of corrosion protective coatings” Corrosion Science 75 (2013) 158-168

[5] M. Fedel, E. Callone, S. Diré, F. Deflorian, M.-G. Olivier, M. Poelman “Effect of Na-Montmorillonite sonication on the protective properties of hybrid silica coatings”, Electrochimica Acta 124 (2014) 90–99

[6] R. Naderi, M. Fedel, F. Deflorian, M. Poelman, M. Olivier “Synergistic effect of clay nanoparticles and cerium component on the corrosion behavior of eco-friendly silane sol–gel layer applied on pure aluminum Surface and Coatings Technology”, 224 (2013) 93-100

[7] R. Naderi, M. Fedel, T. Urios, M. Poelman, M.-G. Olivier, F. Deflorian “Optimization of silane sol–gel coatings for the protection of aluminium components of heat exchangers” Surface and Interface Analysis 45 (2013) 1457-1466

[8] F. Atmani; D. Lahem; M. Poelman; C. Buess-Herman; M.-G. Olivier “Mild steel corrosion in chloride environment: effect of surface preparation and influence of inorganic inhibitors” Corrosion Engineering, Science and Technology 48 (2013) 9-18

[9] D. Lahem; M. Poelman; F. Atmani; M.-G. Olivier “Synergistic improvement of inhibitive activity of dicarboxylates in preventing mild steel corrosion in neutral aqueous solution” Corrosion Engineering, Science and Technology 47 (2012) 463-471

[10] M. Poelman, I. Recloux, N. Cornil, N. Blandin, L. Deronne, Y. LeDisert, M.-G. Olivier “ Electrochemical study of the corrosion behaviour at the edges of electrocoated steel” Progress in Organic Coatings, 74 (2012) 453-460