... Available online 23 February 2005. Abstract. Laminated composites in the Al 2 O 3 ZrO 2 syst... more ... Available online 23 February 2005. Abstract. Laminated composites in the Al 2 O 3 ZrO 2 system were prepared by superimposing ceramic laminae of different compositions produced by tape-casting. ... Individual layers were produced by tape-casting. ...
A solid state bonding technique under hot pressing was used for joining alumina with thin metal s... more A solid state bonding technique under hot pressing was used for joining alumina with thin metal sheets of Ni, Cu and Fe. The microstructure and microchemistry of the ceramic–metal interface and of the fracture interface were examined using scanning electron microscopy (SEM) energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), in order to identify the adhesion mechanisms and the nature
... [25] D. Kervadec, JL Chermant, in: Fracture Mechanics of Ceramics (Eds: RC Bradt, DPHHasselma... more ... [25] D. Kervadec, JL Chermant, in: Fracture Mechanics of Ceramics (Eds: RC Bradt, DPHHasselman, D. Munz, H. Sakai, VY Shevchenko), Plenum Press, New York, 1992, Vol. ... By Maria Gulia Faga,*Stefano Guicciardi, Laura Esposito, Alida Bellosi and Giuseppe Pezzotti ...
ABSTRACT In order to assess the capability of ceramics parts to replace metals ones as wear-resis... more ABSTRACT In order to assess the capability of ceramics parts to replace metals ones as wear-resistant components in fuel engine, a comparison of wear properties is essential. Using pin-on-disc system, the wear behavior of several hot presses silicon nitride and cast iron discs against cast iron pins in lubricated conditions was evaluated. All the tests were carried out with the same applied weight and for the same sliding distance. For each coupling, four different sliding speed were used. Foe each test , oil temperature and friction coefficient were continuously registered, while wear amount was estimated by the final weight loss. Scanning electron microscopy was used to individuate wear features. It resulted that when the cast iron pin was coupled with ceramic disk, its wear was much higher than self-matched.
ABSTRACT Slip casting parameters and mechanical properties were analyzed for several different sl... more ABSTRACT Slip casting parameters and mechanical properties were analyzed for several different slip casting compositions of tetragonal zirconia-toughened alumina (Al2O3-t-ZrO2). The slurries were prepared with the same weight ratio of the two solid phases, 70/30 for alumina and zirconia respectively, but with a different solid to liquid ratio and different pH of the suspensions. Distinctive features of the green and sintered bodies were shown to be highly dependent on the rheological characteristics of the slurries. Some effects on the final mechanical properties were also found.
... Available online 23 February 2005. Abstract. Laminated composites in the Al 2 O 3 ZrO 2 syst... more ... Available online 23 February 2005. Abstract. Laminated composites in the Al 2 O 3 ZrO 2 system were prepared by superimposing ceramic laminae of different compositions produced by tape-casting. ... Individual layers were produced by tape-casting. ...
A solid state bonding technique under hot pressing was used for joining alumina with thin metal s... more A solid state bonding technique under hot pressing was used for joining alumina with thin metal sheets of Ni, Cu and Fe. The microstructure and microchemistry of the ceramic–metal interface and of the fracture interface were examined using scanning electron microscopy (SEM) energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), in order to identify the adhesion mechanisms and the nature
... [25] D. Kervadec, JL Chermant, in: Fracture Mechanics of Ceramics (Eds: RC Bradt, DPHHasselma... more ... [25] D. Kervadec, JL Chermant, in: Fracture Mechanics of Ceramics (Eds: RC Bradt, DPHHasselman, D. Munz, H. Sakai, VY Shevchenko), Plenum Press, New York, 1992, Vol. ... By Maria Gulia Faga,*Stefano Guicciardi, Laura Esposito, Alida Bellosi and Giuseppe Pezzotti ...
ABSTRACT In order to assess the capability of ceramics parts to replace metals ones as wear-resis... more ABSTRACT In order to assess the capability of ceramics parts to replace metals ones as wear-resistant components in fuel engine, a comparison of wear properties is essential. Using pin-on-disc system, the wear behavior of several hot presses silicon nitride and cast iron discs against cast iron pins in lubricated conditions was evaluated. All the tests were carried out with the same applied weight and for the same sliding distance. For each coupling, four different sliding speed were used. Foe each test , oil temperature and friction coefficient were continuously registered, while wear amount was estimated by the final weight loss. Scanning electron microscopy was used to individuate wear features. It resulted that when the cast iron pin was coupled with ceramic disk, its wear was much higher than self-matched.
ABSTRACT Slip casting parameters and mechanical properties were analyzed for several different sl... more ABSTRACT Slip casting parameters and mechanical properties were analyzed for several different slip casting compositions of tetragonal zirconia-toughened alumina (Al2O3-t-ZrO2). The slurries were prepared with the same weight ratio of the two solid phases, 70/30 for alumina and zirconia respectively, but with a different solid to liquid ratio and different pH of the suspensions. Distinctive features of the green and sintered bodies were shown to be highly dependent on the rheological characteristics of the slurries. Some effects on the final mechanical properties were also found.
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