Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Alternative label

• Bertolino N., Monagheddu M., Tacca A, Giuliani P., Zanotti C., Maglia F., Anselmi-Tamburini U. (2003)
  Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications
  in Journal of materials research
  (literal)

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• Bertolino N., Monagheddu M., Tacca A, Giuliani P., Zanotti C., Maglia F., Anselmi-Tamburini U. (literal)

Pagina inizio

• 448 (literal)

Pagina fine

• 455 (literal)

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• 18-2 (literal)

Rivista

• Journal of materials research (Rivista)

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• Bertolino N., Monagheddu M., Tacca A, assegnisti CNR (literal)

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• Combustion Synthesis (CS)was used to prepare boride based Functionally Graded Materials (FGMs) as thermal barrier for space reentry vehicles. FGMs are characterized by inhomogeneous spatial composition, resulting in different spatial characteristics. In this work, the FGMs were composed by a ceramic, i.e. MB2 (M= Ti, Zr, Hf) and a metallic, i.e. NiAl, side, joined together by composite layers of graded stoichiometries of the two components. Thus, in the same material, the boride end gives thermal insulation, while the intermetallic end offers an easy junction to the structure of the space aircraft.A study was performed on the synthesis of the boride, intermetallic and composite mixtures. The differences in reaction temperature and velocity between the materials were minimized by appropriate dilution of the green mixtures. Microhardness tests, carried out on the different layers, showed values increasing from the NiAl (6 GPa) to the boride side (20-30 GPa). The fine and dispersed spherical porosity makes the material suitable as thermal protection systems. The insulating capability tests measured the temperature gradient between the heated ceramic end and the metallic end. HfB2/NiAl showed a temperature gradient of around 800 degrees, followed by ZrB2/Nial (700 degrees) and TiB2/NiAl (400 degrees). The tested FGMs did not experience any spallation or crack formation due to the thermal cyclings, keeping their mechanical integrity. (literal)

Note

• ISI Web of Science (WOS) (literal)

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• IENI-CNR, Sezione di Milano, Via Cozzi 53, 20125-Milano, Italy. Dipartimento di Chimica Fisica, Università di Pavia - IENI CNR Sezione di Pavia, Viale Taramelli 16, 27100-Pavia, Italy. (literal)

Titolo

• Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications (literal)

Prodotto di

• Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE) (Istituto)
• Materiali strutturali innovativi per l'energetica (ET.P06.005.001) (Modulo)
• Materiali metallici e ceramici per l'accumulo, la produzione e la distribuzione dell'energia (ET.P06.009.004) (Modulo)

Autore CNR

• PIETRO GIULIANI (Persona)
• CLAUDIO ZANOTTI (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• PIETRO GIULIANI (Persona)
• CLAUDIO ZANOTTI (Unità di personale interno)

Prodotto

• Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE) (Istituto)
• Materiali strutturali innovativi per l'energetica (ET.P06.005.001) (Modulo)
• Materiali metallici e ceramici per l'accumulo, la produzione e la distribuzione dell'energia (ET.P06.009.004) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of materials research (Rivista)

Insieme di parole chiave di

• Parole chiave di "Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications" (Insieme di parole chiave)