Pages
- 1
- 2
- document
-
Homborg, A.M. (author), van Westing, E.P.M. (author), Tinga, T. (author), Ferrari, G.M. (author), Zhang, X. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)This study validates the ability of Hilbert spectra to investigate transients in an electrochemical noise signal for an aqueous corrosion inhibition process. The proposed analysis procedure involves the identification and analysis of transients in the electrochemical current noise signal. Their decomposition into instantaneous frequencies in a...article 2014
- document
-
Heyer, A. (author), D'Souza, F. (author), Zhang, X. (author), Ferrari, G.M. (author), Mol, J.M.C. (author), de Wit, J.H.W. (author)This research paper addresses the biodegradation process for ballast tank coatings in marine environments. As part of this new approach, a commercially available ballast tank coating was exposed to bacteria obtained from a culture collection and to a natural bacterial community isolated from a real ballast tank. The natural community was chosen...article 2014
- document
-
Heyer, A. (author), D'Souza, F. (author), Morales, C.F.L. (author), Ferrari, G. (author), Mol, J.M.C. (author), de Wit, J.H.W. (author)Microbiologically Influenced Corrosion (MIC) is the term used for the phenomenon in which corrosion is initiated and/or accelerated by the activities of microorganisms. MIC is a very serious problem for the ship industry as it reduces structural lifetime in combination with safety risks for crewmembers or inspection personal and increases...article 2013
- document
-
Homborg, A.M. (author), Tinga, T. (author), Zhang, X. (author), van Westing, E.P.M. (author), Oonincx, P.J. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)Hilbert spectra allow identification of instantaneous frequencies that are attributed to specific corrosion mechanisms in electrochemical noise data. The present work proposes to identify and analyze areas of interest in Hilbert spectra, which enables to obtain valuable frequency information from electrochemicalnoise signals. Experiments were...article 2013
- document
-
Homborg, A.M. (author), van Westing, E.P.M. (author), Tinga, T. (author), Zhang, X. (author), Oonincx, P.J. (author), Ferrari, G.M. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)Hilbert spectra, calculated with the Hilbert–Huang transform, are presented here as an analysis technique for the characterization of electrochemical noise data in corrosion studies. A highly detailed decomposition of the original current and potential data is provided in time and frequency simultaneously. Results on the decomposition of...article 2013
- document
-
Heyer, A. (author), Mol, J.M.C. (author), D'Souza, F. (author), de Wit, J.H.W. (author), Ferrari, G. (author)Microbiologically influenced corrosion (MIC) of steel is a serious problem in the marine environment and many industries, such as the shipping industry. While electrochemical measurements such as impedance have been used in corrosion monitoring for several years, the true capabilities of the technique and the optimal methodology for extracting...conference paper 2012
- document
-
Heyer, A. (author), D'Souza, F. (author), Bruin, A. (author), Ferrari, G. (author), Mol, J.M.C. (author), de Wit, J.H.W. (author)Corrosion studies of materials on the micro or even nano-scale level are cumbersome due to instrumental limitations and handling procedures. If biological processes are involved the spatial resolution is even more important and sample preparation is usually the limitation. Attachment of bacteria on stainless steel surface is a complex...article 2012
- document
-
Homborg, A.M. (author), Tinga, T. (author), Zhang, X. (author), van Westing, E.P.M. (author), Oonincx, P.J. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)Electrochemical current and potential noise signals in many cases exhibit a DC drift that should be removed prior to further data analysis. The theoretical ability of wavelet analysis and empirical mode decomposition to effectively remove only the DC drift component is evaluated based on their mutual performance for the first time. The...article 2012
- document
-
Mol, J.M.C. (author), Lodhi, Z.F. (author), Hovestad, A. (author), 't Hoen-Velterop, L. (author), Terryn, H. (author), de Wit, J.H.W. (author)Cadmium (Cd) has been extensively used as an excellent corrosion protective coating for steel components in aerospace, automotive, electrical and fasteners industries. However, Cd is banned due to its toxic nature and strict environmental regulations. In this study, the electrodeposition mechanism and kinetics, coating morphology and corrosion...bookPart 2011
- document
-
Heyer, A. (author), Mol, J.M.C. (author), D'Souza, F. (author), de Wit, J.H.W. (author), Ferrari, G. (author)Microbiologically influenced corrosion (MIC) is a well known phenomenon in aquatic environments [1]. The presence of a biofilm on metal surface often establishes new electrochemical reaction pathways, or promotes reactions which are not normally favored in the absence of microorganisms, resulting in increased corrosion rates and on the...conference paper 2011
- document
-
Mol, J.M.C. (author), Lodhi, Z.F. (author), Hovestad, A. (author), 't Hoen-Velterop, L. (author), Terryn, H. (author), de Wit, J.H.W. (author)Cadmium (Cd) has been extensively used as an excellent corrosion protective coating for steel components in aerospace, automotive, electrical and fasteners industries. However, Cd is banned due to its toxic nature and strict environmental regulations. In this study, the electrodeposition mechanism and kinetics, coating morphology and corrosion...bookPart 2010
- document
-
Lodhi, Z.F. (author), Mol, J.M.C. (author), Hovestad, A. (author), 't Hoen-Velterop, L. (author), Terryn, H. (author), de Wit, J.H.W. (author), TNO Industrie en Techniek (author)The corrosion properties of electrodeposited zinc-cobalt-iron (Zn-Co-Fe) alloys (up to 40 wt.% Co and 1 wt.% Fe) on steel were studied by using various electrochemical techniques and compared with zinc (Zn) and cadmium (Cd) coatings in 3.5% NaCl solution. It was found that with an increase in Co content in the coating the open circuit potential ...article 2009
- document
-
Lodhi, Z.F. (author), Mol, L.M.C. (author), Hovestad, A. (author), Terryn, H. (author), de Wit, J.H.W. (author), TNO Industrie en Techniek (author)Cadmium (Cd) has been extensively used as an excellent corrosion protective coating for steel applications in aerospace, automotive, electrical and fasteners industries. However, Cd is banned due to its toxic nature and strict environmental regulations. In this study, the coating morphology and corrosion resistance of alternative,...article 2008
- document
-
de Wit, J.H.W. (author), Mol, J.M.C. (author), Bos, W.M. (author), Ferrari, G.M. (author)Since the maritime environment is strongly aggressive, coatings needed to protect steel can be classifi ed as ‘heavy duty coatings’. In most maritime applications because of maintenance diffi culties a long service life is generally required. This, together with safety and environmental issues, demands high requisites in performance and...bookPart 2008
- document
-
Lodhi, Z.F. (author), Mol, J.M.C. (author), Hovestad, A. (author), Terryn, H. (author), de Wit, J.H.W. (author), TNO Industrie en Techniek (author)The electrodeposition operating conditions for Zn-Co and Zn-Co-Fe alloys from chloride baths were studied. The electrodeposition was performed on a high strength steel substrate, under galvanostatic conditions, for a range of current densities at varying Co2+ and Fe2+ bath concentrations and at different temperatures. A transition current...article 2007
- document
-
Zhang, X. (author), van den Bos, C. (author), Hovestad, A. (author), Terryn, H. (author), de Wit, J.H.W. (author), TNO Industrie en Techniek (author)The corrosion behavior of Cr(VI) and Cr(III) treated zinc has been studied using scanning Kelvin probe (SKP), potentiodynamic polarization and elctrochemical impedance spectroscopy (EIS). The Volta potentials measured on the Cr(VI) or the CR(III)-A treated zinc area by SKP in a humid chamber are more negative than on the untreated zinc area,...bookPart 2007
- document
-
TNO Industrie en Techniek (author), Zhang, X. (author), van den Bos, C. (author), Sloof, W.G. (author), Hovestad, A. (author), Terryn, H. (author), de Wit, J.H.W. (author)Drying effects on corrosion performance of Cr(VI)- and Cr(III)-treated electro-galvanized steel have been studied in NaCl solution using potentiodynamic measurements and electrochemical impedance spectroscopy (EIS), The Cr(VI) and the Cr(III) treated specimens were dried at three different temperatures: 60, 110 and 210°C. The surface layers were...conference paper 2006
- document
-
Mol, J.M.C. (author), van de Langkruis, J. (author), de Wit, J.H.W. (author), van der Zwaag, S. (author), TNO Bouw en Ondergrond (author)The effect of pre- and post-extrusion heat treatments on the filiform corrosion behaviour of a well-known aluminium extrusion alloy AA6063 is studied by a combination of accelerated filiform corrosion exposure tests and potentiodynamic polarisation measurements for four different surface treatments. It is shown that the post-extrusion heat...article 2005
- document
-
Campestrini, P. (author), van Westing, E.P.M. (author), Hovestad, A. (author), de Wit, J.H.W. (author), TNO Industrie (author)The parameters of the chromate bath, like temperature, pH, and fluoride content, strongly affect the morphology and chemical composition of the chromate conversion coating and as a consequence have a large influence on its corrosion performance. In this paper, electrochemical impedance spectroscopy (EIS) was used in combination with other...article 2002
- document
- Mol, J.M.C. (author), de Wit, J.H.W. (author), van der Zwaag, S. (author), TNO Bouw (author) article 2002
Pages
- 1
- 2