Paper Title:
Thermal Shock Resistance of the RE-Oxide and Oxynitride Glasses
  Abstract

Thermal shock resistance of the RE-Si-Mg-O-N glasses (RE = La, Nd, Yb, Lu) with 0 and 20 eq.% of nitrogen was investigated by the indentation-quench method based on propagation of Vickers cracks. Crack growth was measured on the same sample for a test series of different quenching temperatures. Thermal shock resistance of the studied materials was determined as a temperature difference resulting in 10 % growth of the initial cracks (∆T10) and by the thermal shock parameter R calculated from the material properties. Although the comparison of ∆T10 and R values as a function of glass composition revealed some differences between these two approaches, also a common trend was observed. Thermal shock resistance increased with the fractional glass compactness resulting from RE type and N content increase.

  Info
Periodical
Edited by
J. Dusza, R. Danzer and R. Morrell
Pages
296-299
DOI
10.4028/www.scientific.net/KEM.290.296
Citation
F. Lofaj, F. Dorčáková, "Thermal Shock Resistance of the RE-Oxide and Oxynitride Glasses", Key Engineering Materials, Vol. 290, pp. 296-299, 2005
Online since
July 2005
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Price
$32.00
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