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1Author    G. Ennas, A. Musinu, G. Paschina, G. Piccaluga, G. PinnaRequires cookie*
 Title    Effect of Cooling Rate on the Structure of Sodium Borate Glasses  
 Abstract    Sodium borate glasses with two different compositions have been prepared using cooling rates in the range 7 • 10" C/s-2 • 10 2 °C/s. Structural characterization has been carried out by X-ray diffraction, and glass transition temperatures have been measured by Differential Scanning Calorimetry. The samples exhibit slightly different density values and glass transition temperatures. However, radial distribution functions appear extremely similar and the sodium coordination shell does not change in going from fast to slowly quenched glasses, showing that the short and medium range order is not affected by thermal treatment. 
  Reference    Z. Naturforsch. 48a, 599—604 (1993); received January 19 1993 
  Published    1993 
  Keywords    Glass, structure, diffraction 
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 TEI-XML for    default:Reihe_A/48/ZNA-1993-48a-0599.pdf 
 Identifier    ZNA-1993-48a-0599 
 Volume    48