A method for evaluating viscosities of metallic glasses from the rates of thermal transformations
A method for evaluating viscosities of metallic glasses from the rates of thermal transformations
复制标题
DOI：
10.1016/0022-3093(78)90128-x
复制
发表时间：
1978-02
影响因子：
3.5
通讯作者：
H. Chen
中科院分区：
文献类型：
--
作者：
H. Chen
The apparent activation energiesE(T) for the glass transition and crystallization in Pd77.6Cu6Si16.5and Pd48Ni32P20glass are seen to coincide with those for the viscous flow. This implies that both the rates of glass transition and crystallization in metallic glasses scale as the viscosity. Based on this proposition, the viscosity of a Pt45Ni30P25glass, for example, has been evaluated, by means of thermal measurements, from the glass transition far into the crystallization temperatures. The viscosity η decreases rapidly from 1013P at 480 K to 107P at 580 K and is described by a Fulcher's expression asη= 10−3exp[5950/(T− 320)].
