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Influence of stacking faults and alloy composition on irradiation induced amorphization of ZrCr{sub 2}, ZrFe{sub 2} and Zr{sub 3}(Fe{sub 1-x},Ni{sub x})

Description: These Zr-based intermetallics were irradiated with high-energy electrons at the ANL HVEM/Tandem facility. Although ZrCr{sub 2} and ZrFe{sub 2} have the same Laves phase C15 fcc crystal structure, their critical temperatures for amorphization under electron irradiation were 180 and 80 K, showing that Cr substitution for Fe in the sublattice had a marked effect on annealing. The low temperature dose to amorphization was higher in ZrFe{sub 2} than in ZrCr{sub 2} by a factor of two. Presence of a h… more
Date: December 1995
Creator: Faldowski, J. A.; Motta, A. T.; Howe, L. M. & Okamoto, P. R.
Partner: UNT Libraries Government Documents Department
open access

Electronic structure calculations of calcium silicate hydrates

Description: Many phases in the calcium-silicate-hydrate system can develop in cement exposed over long periods of time to temperatures above 25 C. As a consequence, chemical reactions involving these phases can affect the relative humidity and water chemistry of a radioactive waste repository that contains significant amounts of cement. In order to predict and simulate these chemical reactions, the authors are developing an internally consistent database of crystalline Ca-Si-hydrate structures. The results… more
Date: November 1995
Creator: Sterne, P. A. & Meike, A.
Partner: UNT Libraries Government Documents Department
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