Pubblicazioni

 
Titolo: Optical properties of dense zirconium and tantalum diborides for solar thermal absorbers
Autori: 
Data di pubblicazione: 2016
Rivista: 
RENEWABLE ENERGY  
Abstract: Ultra-high temperature ceramics (UHTCs) are interesting materials for a large variety of applications under extreme conditions. This paper reports on the production and extensive characterization of highly dense, pure zirconium and tantalum diborides, with particular interest to their potential utilization in the thermal solar energy field. Monolithic bulk samples are produced by Spark Plasma Sintering starting from elemental reactants or using metal diboride powders previously synthesized by Self-propagating High-temperature Synthesis (SHS). Microstructural and optical properties of products obtained by the two processing methods have been comparatively evaluated. We found that pure diborides show a good spectral selectivity, which is an appealing characteristic for solar absorber applications. No, or very small, differences in the optical properties have been evidenced when the two investigated processes adopted for the fabrication of dense TaB2 and ZrB2, respectively, are compared.
Handle: http://hdl.handle.net/11584/143247
Tipologia:1.1 Articolo in rivista

File in questo prodotto:
FileDescrizioneTipologiaLicenza 
Sani_et_al_RenEn_revised_2016.PDF Ultima versione sottomessaPre-printAdministrator   Richiedi una copia
credits unica.it | accessibilità Università degli Studi di Cagliari
C.F.: 80019600925 - P.I.: 00443370929
note legali | privacy

Nascondi la toolbar