Artículo
Abstract:
The Snoek relaxation in an Nb-0.15at.%O alloy reported in the literature, measured at different temperatures and in forced oscillations, is analysed within the framework of the theory of the tangent distribution function and its equivalent form, the integrated distribution, which has been introduced recently in the literature. It is demonstrated that the relaxation spectrum can be described in terms of a frequency dependence of the pre-exponential factor in the Arrhenius relationship of the relaxation times. A single value for the activation enthalpy is encountered in the whole range of temperatures and frequencies covered by the measurements. Finally, the results are compared with those previously obtained in an Nb-0.6at.%O alloy as a function of temperature and in free oscillations, where similar values were obtained for the parameters that characterize the relaxation process. © 1994.
Registro:
| Documento: | Artículo |
| Título: | Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function |
| Autor: | Povolo, F.; Matteo, C.L. |
| Filiación: | Departamento de Materiales, Comisión Nacional de Energía Atómica, Avenida del Libertador 8250, 1429 Buenos Aires, Argentina Departamento de Fisica, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Pabellon 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
| Palabras clave: | Friction; Oscillations; Pendulums; Relaxation processes; Thermal effects; Activation enthalpy; Arrhenius relationship; Frequency dependence; Loss tangent distribution function; Snoek relaxation; Niobium alloys |
| Año: | 1994 |
| Volumen: | 211-212 |
| Número: | C |
| Página de inicio: | 525 |
| Página de fin: | 528 |
| DOI: | http://dx.doi.org/10.1016/0925-8388(94)90558-4 |
| Título revista: | Journal of Alloys and Compounds |
| Título revista abreviado: | J Alloys Compd |
| ISSN: | 09258388 |
| CODEN: | JALCE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09258388_v211-212_nC_p525_Povolo |
Referencias:
- Nowick, Berry, (1972) Anelastic Relaxation in Crystalline Solids, , Academic Press, New York
- Povolo, Matteo, (1992) Mater. Trans. Jpn. Inst. Met, 33, p. 824
- Woirgard, (1977) Scr. Metall, 11, p. 641
Citas:
---------- APA ----------
Povolo, F. & Matteo, C.L. (1994) . Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function. Journal of Alloys and Compounds, 211-212(C), 525-528.http://dx.doi.org/10.1016/0925-8388(94)90558-4
---------- CHICAGO ----------
Povolo, F., Matteo, C.L. "Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function" . Journal of Alloys and Compounds 211-212, no. C (1994) : 525-528.http://dx.doi.org/10.1016/0925-8388(94)90558-4
---------- MLA ----------
Povolo, F., Matteo, C.L. "Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function" . Journal of Alloys and Compounds, vol. 211-212, no. C, 1994, pp. 525-528.http://dx.doi.org/10.1016/0925-8388(94)90558-4
---------- VANCOUVER ----------
Povolo, F., Matteo, C.L. Analysis of the Snoek relaxation in NbO alloys through the loss tangent distribution function. J Alloys Compd. 1994;211-212(C):525-528.http://dx.doi.org/10.1016/0925-8388(94)90558-4
