The present study aims at producing Al-based nanocomposites reinforced with low fractions of ceramic nano-reinforcement produced by thermal plasma, evaluating the strengthening effects induced by their addition to the idely used A356 (Al-Si-Mg) cast aluminum alloy. Nanoparticles were produced using a lab-scale RF inductively coupled thermal plasma system designed by simulation as to optimize the plasma operating conditions and reactor geometry. During the casting route, ultrasonic treatment of the melt was performed to better disperse the reinforcing particles into the matrix. Ceramic spherodized microparticles were also synthesized and micro-reinforced Al-matrix composites were produced with the same route for comparison. Microstructural characterization of the cast samples was carried out by optical and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) analysis. BET analysis was also used for powder characterization. Hardness tests were performed to assess the enhancement in mechanical properties obtained by addition of nanoparticles with respect to both the microparticle reinforced and unreinforced Al-Si-Mg matrix.

M. Boselli, L. Ceschini, V. Colombo, E. Ghedini, M. Gherardi, A. Morri, et al. (2014). Cast Al-based nanocomposites reinforced with thermal plasmasynthesized ceramic nanoparticles. Zurigo : TRANS TECH PUBLICATIONS LTD [10.4028/www.scientific.net/MSF.783-786.1567].

Cast Al-based nanocomposites reinforced with thermal plasmasynthesized ceramic nanoparticles

BOSELLI, MARCO;CESCHINI, LORELLA;COLOMBO, VITTORIO;GHEDINI, EMANUELE;GHERARDI, MATTEO;MORRI, ALESSANDRO;ROTUNDO, FABIO;SANIBONDI, PAOLO;TOSCHI, STEFANIA
2014

Abstract

The present study aims at producing Al-based nanocomposites reinforced with low fractions of ceramic nano-reinforcement produced by thermal plasma, evaluating the strengthening effects induced by their addition to the idely used A356 (Al-Si-Mg) cast aluminum alloy. Nanoparticles were produced using a lab-scale RF inductively coupled thermal plasma system designed by simulation as to optimize the plasma operating conditions and reactor geometry. During the casting route, ultrasonic treatment of the melt was performed to better disperse the reinforcing particles into the matrix. Ceramic spherodized microparticles were also synthesized and micro-reinforced Al-matrix composites were produced with the same route for comparison. Microstructural characterization of the cast samples was carried out by optical and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) analysis. BET analysis was also used for powder characterization. Hardness tests were performed to assess the enhancement in mechanical properties obtained by addition of nanoparticles with respect to both the microparticle reinforced and unreinforced Al-Si-Mg matrix.
2014
Thermec 2013
1567
1572
M. Boselli, L. Ceschini, V. Colombo, E. Ghedini, M. Gherardi, A. Morri, et al. (2014). Cast Al-based nanocomposites reinforced with thermal plasmasynthesized ceramic nanoparticles. Zurigo : TRANS TECH PUBLICATIONS LTD [10.4028/www.scientific.net/MSF.783-786.1567].
M. Boselli; L. Ceschini; V. Colombo; E. Ghedini; M. Gherardi; A. Morri; F. Rotundo; P. Sanibondi; S. Toschi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/296716
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact