Difference between revisions of "Glass Transition Temperature"

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The glass transition temperature, <math>T_g</math>, is the temperature at which an amorphous solid transitions continuously into a liquid state, and vice versa. There are several definitions of this temperature, detailed by Debenedetti and Stillinger [1]:
 
The glass transition temperature, <math>T_g</math>, is the temperature at which an amorphous solid transitions continuously into a liquid state, and vice versa. There are several definitions of this temperature, detailed by Debenedetti and Stillinger [1]:
  
1. In a plot of volume versus temperature, the intersection of the liquid and glass curves marks <math>T_g</math>.  
+
1. In a plot of volume versus temperature, the intersection of the liquid and glass curves marks <math>T_g</math>. Figure 1 [1], shows this phenomenon.
 +
 
  
 
2. Temperature at which the material viscosity reaches <math> 10^13</math> poise.  
 
2. Temperature at which the material viscosity reaches <math> 10^13</math> poise.  

Revision as of 18:18, 8 December 2011

Started by Lauren Hartle, Fall 2011.

The glass transition temperature, <math>T_g</math>, is the temperature at which an amorphous solid transitions continuously into a liquid state, and vice versa. There are several definitions of this temperature, detailed by Debenedetti and Stillinger [1]:

1. In a plot of volume versus temperature, the intersection of the liquid and glass curves marks <math>T_g</math>. Figure 1 [1], shows this phenomenon.


2. Temperature at which the material viscosity reaches <math> 10^13</math> poise.


References

[1] Debenedetti and F. H. Stillinger. "Supercooled liquids and the glass transition". Nature, Vol 410, 8 March 2001.

Keyword in References

Homogeneous flow of metallic glasses: A free volume perspective