The Interfacial Layers Around Nanoparticle and Its Impact on Structural Relaxation and Glass Transition in Model Polymer Nanocomposites

2020 ◽  
pp. 101-131
Author(s):  
Wengang Zhang ◽  
Hamed Emamy ◽  
Fernando Vargas-Lara ◽  
Beatriz A. Pazmiño Betancourt ◽  
Dong Meng ◽  
...  
Keyword(s):  
Glass Transition ◽  
Polymer Nanocomposites ◽  
Structural Relaxation ◽  
Interfacial Layers

scholarly journals Effects of Annealing on Enthalpy Recovery and Nanomechanical Behaviors of a La-Based Bulk Metallic Glass

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 579
Author(s):  
Ting Shi ◽  
Lanping Huang ◽  
Song Li
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Structural Relaxation ◽  
Supercooled Liquid ◽  
Supercooled Liquid Region ◽  
Liquid Region ◽  
Nanoindentation Measurement

Structural relaxation and nanomechanical behaviors of La65Al14Ni5Co5Cu9.2Ag1.8 bulk metallic glass (BMG) with a low glass transition temperature during annealing have been investigated by calorimetry and nanoindentation measurement. The enthalpy release of this metallic glass is deduced by annealing near glass transition. When annealed below glass transition temperature for 5 min, the recovered enthalpy increases with annealing temperature and reaches the maximum value at 403 K. After annealed in supercooled liquid region, the recovered enthalpy obviously decreases. For a given annealing at 393 K, the relaxation behaviors of La-based BMG can be well described by the Kohlrausch-Williams-Watts (KWW) function. The hardness, Young’s modulus, and serrated flow are sensitive to structural relaxation of this metallic glass, which can be well explained by the theory of solid-like region and liquid-like region. The decrease of ductility and the enhancement of homogeneity can be ascribed to the transformation from liquid-like region into solid-like region and the reduction of the shear transition zone (STZ).

Structural relaxation as a forked road to crystallization and glass transition of vapor-deposited amorphous molecular systems

2004 ◽  
Vol 398 (4-6) ◽  
pp. 377-383 ◽  
Author(s):  
Kikujiro Ishii ◽  
Masaki Takei ◽  
Masatsugu Yamamoto ◽  
Hideyuki Nakayama
Keyword(s):  
Glass Transition ◽  
Structural Relaxation ◽  
Molecular Systems
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