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

Abstract:

Article Preview

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.

Info:

Periodical:

Edited by:

N. Igata and S. Takeuchi

Pages:

121-126

DOI:

10.4028/www.scientific.net/KEM.319.121

Citation:

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

Export:

Price:

$35.00

[1] J. L. Snoek, Physica, Vol. 6 (1939) p.591.

[2] P.M. Bunn, D.G. Cummings, and H.W. Leavenworth Jr, J. Appl. Phys., Vol. 33, (1962), p.3009.

[3] Z.C. Szkopiak and J.T. Smith, J. Phys. D Vol. 8, (1975), p.1273.

[4] W.J. Botta F., O. Florêncio, C.R. Grandini, H. Tejima and J.A.R. Jordão, Acta metall. mater., Vol. 38, (1990), p.391.

[5] R.W. Powers and M.V. Doyle, J. Appl. Phys., Vol. 30, (1959), p.514.

[6] D.F. Hasson, and R.J. Arsenault: Treatise on Materials Science, (Academic Press, New York 1972).

[7] O. Florêncio, W. Aparecido de Freitas, W.J. Botta F., C.R. Grandini and J.A. R Jordão, J. Physique IV , Vol. 6, (1996), p. C8.

[8] J.A.R. Jordão, Doctor of Physics Thesis, Universidade de São Paulo (1982).

[9] O. Florêncio, D.G. Pinatti and J.M. Roberts, J. Physique, Vol. 46, (1985), p. C10.

[10] W.J. Botta F., Ph.D. thesis, Oxford University, (1985).

[11] Kê, T.S., Physical. Review, 71, (1947), 533.

[12] A.S. Nowick and B.S. Berry: Anelastic Relaxation in Crystalline Solids(Academic Press, New York 1972).

[13] R.E. Miner, D.F. Gibbons and R. Gibala, Acta metall., Vol. 18, (1970), p.419.

[14] M.S. Ahmad and Z.C. Szkopiak, J. Phys. Chem. Solids, Vol. 31, (1970), p.1799.

[15] O. Florêncio, P. S. Silva Jr, W.J. Botta F. and C.R. Grandini, Materials Research, Vol. 6(4), (2003), p.541.

[16] O. Florêncio, C.R. Grandini, W.J. Botta F., P.R. Guedes and P.S. Silva Jr, Materials Science and Engineering A, Vol. 370, (2004), p.131.

In order to see related information, you need to Login.