Changes in elasticity and viscosity of a SiYAlON glass during structural relaxation in the transformation range
Ultrasonic echography and a three-point bending creep test have been used to study the change in Young's modulus, E, and viscosity, eta , during the structural relaxation of a SiYAlON glass at 870 deg C, i.e. 40 deg C below the glass transition temperature. The increase in viscosity has been di...
Saved in:
Published in | Journal of non-crystalline solids Vol. 175; no. 1; pp. 44 - 50 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier
01.09.1994
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Ultrasonic echography and a three-point bending creep test have been used to study the change in Young's modulus, E, and viscosity, eta , during the structural relaxation of a SiYAlON glass at 870 deg C, i.e. 40 deg C below the glass transition temperature. The increase in viscosity has been discussed and modelled in the frame of the fictive temperature theory and a relatively good fitting has been obtained between calculation and experimental results. In addition to the evolution of E and eta , Raman scattering measurements are presented, which brings to light a microstructural change during the relaxation process. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0022-3093 1873-4812 |
DOI: | 10.1016/0022-3093(94)90313-1 |