Artículos de revistas
Anelastic spectroscopy in potassium aluminum metaphosphate glasses
Journal of Non-Crystalline Solids, v. 352, n. 32-35, p. 3410-3413, 2006.
Universidade Estadual Paulista (UNESP)
Universidade de São Paulo (USP)
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.