LOW-FREQUENCY INTERNAL-FRICTION OF PD40NI40P20 NEAR THE GLASS-TRANSITION

被引：6

作者：

SINNING, HR

机构：

[1] Institut für Werkstoffe, Technische Universität Braunschweig, Deutschland

来源：

ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 05期

关键词：

D O I：

10.1016/0956-7151(91)90285-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The internal friction of amorphous Pd40Ni40P20 near the glass transition was investigated at oscillation frequencies of about 0.1 Hz. The glass transition could be observed also in isothermal experiments; it manifests itself by a characteristic increase of viscoelastic damping measured at temperatures between 550 and 600 K. Above 575 K, the metastable equilibrium value of internal friction obeys an Arrhenius equation with an apparent activation energy of 2.77 eV. A reasonable agreement was found between the magnitude of the observed internal friction effects and equilibrium viscosity data from literature. An apparent acceleration of the relaxation kinetics due to a pre-annealing treatment to beyond the glass transition is not yet understood.

引用

页码：851 / 858

页数：8

共 23 条

[1] THE CORRELATION BETWEEN VISCOUS-FLOW AND DIFFERENTIAL SCANNING CALORIMETRY MEASUREMENTS AT THE GLASS-TRANSITION IN THE METALLIC-GLASS ALLOY FE40NI40P14B6 [J].