Anelastic spectroscopy in potassium aluminum metaphosphate glasses

Artigo

Fecha

2006-09-15

Registro en:

Journal of Non-Crystalline Solids, v. 352, n. 32-35, p. 3410-3413, 2006.

0022-3093

http://hdl.handle.net/11449/69090

10.1016/j.jnoncrysol.2006.03.079

WOS:000240706000008

2-s2.0-33748059540

2949983867418338

0000-0002-3336-309X

http://repositorioslatinoamericanos.uchile.cl/handle/2250/3918581

Autor

Universidade Estadual Paulista (Unesp)

Universidade de São Paulo (USP)

Institución

Universidade Paulista Júlio de Mesquita Filho (Brasil)

Resumen

Anelastic spectroscopy (internal friction and the dynamic modulus) was measured by means of a torsion pendulum at 3-12 Hz, in the range of 100-300 K, for a KAP metaphosphate glass. Two thermally activated internal friction peaks appeared at ∼190 and ∼250 K. These peaks were attributed to the behavior of potassium ions (high temperature) and to hydrogen (low temperature). Dynamic modulus showed a gradual decrease with increasing temperature in the range studied for all compositions. © 2006 Elsevier B.V. All rights reserved.