Influence of Oxygen on the Damping Properties of Nb-Zr Alloys


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Nb-1 wt% Zr polycrystalline and single crystalline samples were submitted to annealing, at pressure of 2.5 x 10-8 Torr and subsequently annealed in an oxygen atmosphere for three hours, in a temperature of 1170 K in oxygen at partial pressure of 5 x 10-5 Torr. Internal friction measurements as a function of temperature were performed between 300 K and 650 K, using a torsion pendulum inverted Kê-type operating in a frequency oscillation in the hertz bandwidth. Three internal friction peaks, which were assigned as Nb-O, Zr-O and Nb-N peaks were observed in oxidized single crystal sample and the relaxation parameters of the three peaks were obtained.



Edited by:

N. Igata and S. Takeuchi




O. Florêncio et al., "Influence of Oxygen on the Damping Properties of Nb-Zr Alloys", Key Engineering Materials, Vol. 319, pp. 121-126, 2006

Online since:

September 2006




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