The cathode represents the main source of energy loss in hydrogen fed solid oxide fuel cells (SOFCs). In order to reduce the polarization resistance, porous composite cathodes, which consist of sintered random structures of electron-conducting (e.g., strontium-doped lanthanum manganite, LSM) and ion-conducting (e.g., yttria-stabilized zirconia,...
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2012 (v1)PublicationUploaded on: April 14, 2023
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2012 (v1)Publication
A steady-state mathematical model of charge and mass transport and electrochemical reaction in porous composite cathodes for solid oxide fuel cell application is presented. The model, based on local mass and charge balances, describes the domain as a continuum, characterizing kinetics as well as mass and charge transport using effective...
Uploaded on: April 14, 2023 -
2001 (v1)Publication
The interest in using organic coatings to protect concrete structures has increased rapidly in recent years. One of the main parameters requested of these films for protecting structures is that they maintain their integrity even if the underlying concrete cracks. In this paper, a technique to evaluate the crack-bridging ability (CBA) of the...
Uploaded on: March 31, 2023 -
1999 (v1)Publication
Corrosion protection of coil-coated hot-dip galvanized (HDG) sheets against aggressive environments depends on several factors linked to galvanizing, chemical conversion, passivation, primer, topcoat. Each component gives a contribution to the ®nal anticorrosive performance of the coated product. The study of such a complex system needs proper...
Uploaded on: April 14, 2023 -
1999 (v1)Publication
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Uploaded on: April 14, 2023 -
2005 (v1)Publication
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Uploaded on: March 31, 2023 -
1999 (v1)Publication
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Uploaded on: December 4, 2022 -
1997 (v1)Publication
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Uploaded on: April 14, 2023 -
2004 (v1)Publication
Some concern about the determination of a standardised test for crack-bridging ability (CBA) measurements exists. The present work focuses on the analysis of the results of experimental tests performed to simulate the mechanical behaviour of a coating when a crack in the beneath concrete opens and grows. The influence of the method of concrete...
Uploaded on: April 14, 2023 -
1998 (v1)Publication
A surface coating for concrete can be exposed to a wide range of environments, movements and stresses depending on which application the structure is used for. Therefore the coatings have different requirements to satisfactorily protect concrete constructions in different service environments. Water permeability is an important factor to be...
Uploaded on: December 5, 2022 -
1997 (v1)Publication
This paper reports an investigation of the effectiveness of a range of concrete coatings for reducing liquid water penetration and for allowing water vapour exchange between substrate and the external atmosphere. New methods for liquid water and water vapour permeability evaluation are presented.
Uploaded on: December 5, 2022 -
1998 (v1)Publication
Environmental problems in the coil coating industry have caused a trend towards non-polluting pretreatment/primer combinations. In this work some environmentally-friendly systems have been studied. Impedance spectroscopy on deformed (T bent) and damaged samples has been used as a tool to obtain a selective evaluation of the best systems....
Uploaded on: March 31, 2023 -
1998 (v1)Publication
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Uploaded on: March 31, 2023 -
2000 (v1)Publication
Il cemento armato è un materiale che, negli ultimi anni, si è rivelato sempre più sensibile all'azione di diversi agenti aggressivi. L'utilizzo di rivestimenti organici superficiali, da applicare sul calcestruzzo, risulta un metodo molto efficace per la protezione dalla corrosione delle strutture in cemento armato. I prodotti vernicianti devono...
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1997 (v1)Publication
The electrochemical characterization of aluminium nnodes containing different intermetallic compounds in 3% sodium chloride and 0.3% radium sulphate aqueous solutions was carried out by means of d.c. measurements. The case of some Ca-Zn. CL-In and Al-Mg-Zn inlermelallic compound!. in Ihe aluminium malrix was examined. SEM and EDAX analyses were...
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2002 (v1)Publication
Extralow sulfur, cold-rolled 304 stainless steel SS samples, annealed and cold-worked to different degrees in an industrial plant, together with a ferrite-rich SS, have been studied by electrochemical and microscopic techniques to analyze the effect of cold- working on its passive behavior in sulfate media. The techniques employed were...
Uploaded on: March 25, 2023 -
1997 (v1)Publication
e electrochemical and corrosion behaviour of Al-Mg-Zn alloys in 3% sodium chloride and 0.3% sodium sulphate aqueous solution was studied, by means of dc and UCmeasurements at different polarization conditions. SEM and EDAX analysis were employed in order to characterize the surface structure of the above alloys. The relationship between...
Uploaded on: March 31, 2023