Browsing by Subject "Alumina"

Now showing items 1-8 of 8

    • Article  

      Boron adsorption on alumina (Al2O3) and magnesia (MgO) in aqueous solutions: A comparative study 

      Konstantinou, M.; Kasseta, G.; Pashalidis, Ioannis (2006)
      The adsorption of boron on alumina (Al2O3) and magnesia (MgO) has been investigated in aqueous solutions as a function of pH, boron concentration, amount of adsorbent, ionic strength and temperature. Analysis of the ...
    • Article  

      Competitive adsorption of boric acid and chromate onto alumina in aqueous solutions 

      Demetriou, Antri; Pashalidis, Ioannis (2014)
      The competitive adsorption of boric acid and chromate from aqueous solutions by alumina has been investigated by spectrophotometry at pH 8, ionic strength = 0.0, 0.1 and 1.0 M NaClO4, T = 22 ± 3°C and under normal atmospheric ...
    • Conference Object  

      Fabrication and characterization of nanoscale heating sources ("nanoheaters") for nanomanufacturing 

      Jogdand, H.; Gulsoy, G.; Ando, T.; Chen, J.; Doumanidis, C. C.; Zhiyong, G.; Rebholz, Claus; Wong, P. (Affiliation: Dept. of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA, United StatesAffiliation: Dept. of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, United StatesAffiliation: Dept. of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CyprusAffiliation: Dept. of Chemical Engineering, University of Massachusetts Lowell, One University Ave., Lowell, MA 0185, United StatesAffiliation: Dept. of Mechanical Engineering, Tufts University, Medford, MA, United StatesCorrespondence Address: Jogdand, H.Dept. of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA, United States, 2008)
      Nanoheater systems based on the exothermic reaction between aluminum and nickel were developed. Multilayered and powder-based heterostructures were fabricated and characterized, before and after ignition experiments, for ...
    • Article  

      Fabrication of nanorods by metal evaporation inside the pores of ultra-thin porous alumina templates 

      Kokonou, M.; Rebholz, Claus; Giannakopoulos, K. P.; Doumanidis, C. C. (2007)
      Porous alumina has attracted a great deal of attention as a template material for the growth of nanowires and nanodots. Typically, the pores have a high aspect ratio, which forbids the use of evaporation techniques for ...
    • Article  

      Modeling of the self-propagating reactions of nickel and aluminum multilayered foils 

      Gunduz, I. E.; Fadenberger, K.; Kokonou, M.; Rebholz, Claus; Doumanidis, C. C.; Ando, T. (2009)
      In this study, we performed simulations of self-propagating reactions of nanoscale nickel-aluminum multilayers using numerical methods. The model employs two-dimensional heat transfer equations coupled with heat generation ...
    • Article  

      Photothermal radiometry on nickel (pigmented aluminium oxide) selective solar absorbing surface coatings 

      Othonos, Andreas S.; Nestoros, Marios; Palmerio, D.; Christofides, Constantinos; Bes, R. S.; Traverse, J. P. (1998)
      Photothermal radiometry (PTR) is applied to characterize nickel-pigmented aluminium oxide solar absorbing coatings. A modulated laser beam is used to heat the solar samples. The subsequent emission of thermal radiation is ...
    • Article  

      Surface mechanism of the boron adsorption on alumina in aqueous solutions 

      Demetriou, Antri; Pashalidis, Ioannis; Nicolaides, Athanassios V.; Kumke, M. U. (2013)
      The adsorption of boron (boric acid) from aqueous solutions on alumina has been investigated at pH 8.0, I = 0.1 M NaClO4, T = 22 ± 3°C, and under normal atmospheric conditions. The characterization of the adsorbed species ...
    • Article  

      Tribological properties of twin electron-beam evaporated Cr-N and Al-Cr-N coatings under laboratory sliding and drill experiments 

      Polychronopoulou, K.; Demas, N. G.; Rebholz, Claus; Polycarpou, A. A. (2008)
      The tribological behavior of substoichiometric Cr-N and Al-Cr-N coatings prepared by twin electron-beam evaporation at 450°C was studied. Al-Cr-N coatings with Al to Cr ratios in the range of 1-8 (and nitrogen concentrations ...