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51317--9666-The Use of Nanostructured Materials Loaded with pH Indicating Molecules for Corrosion Sensing

Synthesis of materials for immobilization of well-known pH indicators, added to coatings for corrosion sensing: Layered double hydroxides, silica nanocapsules and polymeric microcapsules (chitosan). Characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopies.

 

Product Number: 51317--9666-SG
ISBN: 9666 2017 CP
Author: Joao Tedim
Publication Date: 2017
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$20.00
$20.00

Detection and mitigating actions are inter-related parts of the tackling of corrosion in a cost-effective way. Previous works available in the literature have shown the potential for using pH indicators as a simple and user-friendly approach for detection of corrosion activity [1-3]. In fact the correlation between the electro(chemical) processes occurring at the metal/solution interface transduction into a measurable signal and correlation with level of degradation constitute an ever actual problem and challenge in the field of corrosion science and engineering. In this work we revisit the use of pH indicating molecules as active components of novel hosting structures for detection of corrosion [4]. The designed systems encompass materials at micro and nanoscale with capacity for controlled release of substances to be used as functional additives into polymeric coatings and thus impart self-sensing properties. References:[1] J. Zhang and G. S. Frankel Corrosion 1999 55 957.[2] I. M. El-Nahhal S. M. Zourab and N. M. El-Ashgar J. Dispersion Sci. Technol. 2001 22 583.[3] W. Li and L. M. Calle NACE Corrosion 2007 Paper 07228 Nashville TN March 2007.[4] F. Maia J. Tedim A. C. Bastos M. G. S. Ferreira and M. L. Zheludkevich Nanotechnology 2013 24 415502.Acknowledgements:SMARCOAT - This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No 645662. 

Key words: Corrosion, pH indicator molecules, controlled release, layered double hydroxides, silica nanocapsules, chitosan microcapsules, sensors.

Detection and mitigating actions are inter-related parts of the tackling of corrosion in a cost-effective way. Previous works available in the literature have shown the potential for using pH indicators as a simple and user-friendly approach for detection of corrosion activity [1-3]. In fact the correlation between the electro(chemical) processes occurring at the metal/solution interface transduction into a measurable signal and correlation with level of degradation constitute an ever actual problem and challenge in the field of corrosion science and engineering. In this work we revisit the use of pH indicating molecules as active components of novel hosting structures for detection of corrosion [4]. The designed systems encompass materials at micro and nanoscale with capacity for controlled release of substances to be used as functional additives into polymeric coatings and thus impart self-sensing properties. References:[1] J. Zhang and G. S. Frankel Corrosion 1999 55 957.[2] I. M. El-Nahhal S. M. Zourab and N. M. El-Ashgar J. Dispersion Sci. Technol. 2001 22 583.[3] W. Li and L. M. Calle NACE Corrosion 2007 Paper 07228 Nashville TN March 2007.[4] F. Maia J. Tedim A. C. Bastos M. G. S. Ferreira and M. L. Zheludkevich Nanotechnology 2013 24 415502.Acknowledgements:SMARCOAT - This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No 645662. 

Key words: Corrosion, pH indicator molecules, controlled release, layered double hydroxides, silica nanocapsules, chitosan microcapsules, sensors.

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51317--9682-Monitoring of Stagnant and Low-flow Lines in Petroleum Refineries

Product Number: 51317--9682-SG
ISBN: 9682 2017 CP
Author: Faisal Al-Refai
Publication Date: 2017
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A failure in one of the de-salter relief lines of the crude distillation unit. This paper describes the probable causes and the adopted remedies for the localized corrosion observed in the insulated relief line. Circumstantial evidence and failure morphology were used in arriving at the root cause for this failure.