Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Author "Gravani, S."
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Article
Growth and characterization of ceria thin films and Ce-doped γ - Al 2 O 3 nanowires using sol-gel techniques
Gravani, S.; Polychronopoulou, K.; Stolojan, V.; Cui, Q.; Gibson, P. N.; Hinder, S. J.; Gu, Z.; Doumanidis, C. C.; Baker, M. A.; Rebholz, Claus (2010)γ - Al 2 O 3 is a well known catalyst support. The addition of Ce to γ - Al 2 O 3 is known to beneficially retard the phase transformation of γ - Al 2 O 3 to α - Al 2 O 3 and stabilize the γ-pore structure. In this ...
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Article
In situ observation of rapid reactions in nanoscale Ni-Al multilayer foils using synchrotron radiation
Fadenberger, K.; Gunduz, Ibrahim Emre; Tsotsos, Chrysostomos; Kokonou, Maria; Gravani, S.; Brandstetter, Stefan; Bergamaschi, Anna; Schmitt, Bernd; Mayrhofer, Paul H.; Doumanidis, C. C.; Rebholz, Claus (2010)The observation of rapid reactions in nanoscale multilayers present challenges that require sophisticated analysis methods. We present high-resolution in situ x-ray diffraction analysis of reactions in nanoscale foils of ...
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Article
Mechanical and high pressure tribological properties of nanocrystalline Ti(N,C) and amorphous C:H nanocomposite coatings
Tsotsos, C.; Polychronopoulou, K.; Demas, N. G.; Constantinides, G.; Gravani, S.; Böbel, K.; Baker, M. A.; Polycarpou, A. A.; Rebholz, Claus (2010)This paper reports on the mechanical and high pressure tribological properties of nanocrystalline (nc-) Ti(N,C)/amorphous (a-) C:H deposited, using low temperature (∼200°C) DC reactive magnetron sputtering. The mechanical ...