http://www.cnr.it/ontology/cnr/individuo/prodotto/ID303281
Interaction between ionic liquids and metal alloys for thermal application (Abstract/Poster in atti di convegno)
- Type
- Label
- Interaction between ionic liquids and metal alloys for thermal application (Abstract/Poster in atti di convegno) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
U. Bardi, S. Caporali, F. Ghezzi, A. Lavacchi, E. Miorin, C. Pagura, I. Perissi, and A. Tolstoguzov (2005)
Interaction between ionic liquids and metal alloys for thermal application
in European Conference on Applications of Surface and Interface Analysis ECASIA'05, Vienna, September 25-30, 2005
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- U. Bardi, S. Caporali, F. Ghezzi, A. Lavacchi, E. Miorin, C. Pagura, I. Perissi, and A. Tolstoguzov (literal)
- Note
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 Dipartimento di Chimica, Universit`a di Firenze e Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali (INSTM) unit`a di ricerca di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy,
2 Istituto di Fisica del Plasma (IFP-CNR), Via R. Cozzi 53, 20125 Milano, Italy,
3 Istituto per l'Energetica e le Interfasi (IENI-CNR), Corso Stati Uniti 4, 35127 Padova, Italy (literal)
- Titolo
- Interaction between ionic liquids and metal alloys for thermal application (literal)
- Abstract
- Ionic liquids (ILs) are room temperature molten salts composed of many combinations of organic and/or inorganic
ions. They are widely used as solvents for clean synthesis and catalytic processes. Recently ILs application
as fluids for heat transfer and storage has been considered with encouraging results. Nevertheless, understanding
of the interaction behaviour between ILs and materials employed in the construction of thermal storage and
exchange devices as well in chemical reactors is still at a very early stage.
In present work we report on the characterization of the corrosion layer formed onto the surface of the
different metal alloys after the immersion test performed at 225C for 20 days. The tested materials were
brass, Inconel and carbon steel (AISI1018), while the considered IL was the 1-butyl-3-butyl-imidazolium
bis(trifluoromethane)sulfonimide. Such ionic liquid was selected for its extremely high thermal capacity, chemical
stability and high decomposition temperature. Our focus is on the elemental identification and sputter depth
profiling of the as-received and treated samples by SIMS. XPS technique was employed in our study for surface
chemical analysis, and low-energy ion scattering with complementary mass separation of scattered ions (MARISS
technique) was enlisted to determine the composition of the outer atomic layer of the samples. Surface roughness
before and after the immersion test was measured by a stylus profiler.
The experimental data indicate that the products of decomposition of the ionic liquid (C, N, O, F, S) are the
principal components of all surfaces analysed. It is shown that the most corrosion resistant material is the copper
alloy (brass). The essential features of corrosion behaviour of the samples are discussed. (literal)
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