A theoretical model for evaluation of configurational entropy of mixing with respect to shape and size of particles

1995 ◽  
Vol 17 (1) ◽  
pp. 69-109 ◽  
Author(s):  
Jan Duda ◽  
Janina Milewska-Duda
Keyword(s):  
Theoretical Model ◽  
Configurational Entropy ◽  
Entropy Of Mixing ◽  
Size Of Particles ◽  
Shape And Size

Controlled Horphology in Electronic Ceranic Powder Preparation

1988 ◽  
Vol 121 ◽  
Author(s):  
R. Legros ◽  
R. Metz ◽  
J. P. Caffin ◽  
A. Lagrange ◽  
A. Rousset
Keyword(s):  
Electrical Properties ◽  
Chemical Process ◽  
Powder Preparation ◽  
Precursor Method ◽  
Oxalate Precursor ◽  
Electronic Ceramics ◽  
Efficient Route ◽  
Size Of Particles ◽  
Shape And Size

ABSTRACTThe oxalate precursor method appears as a new efficient route in order to control the shape and size of particles of various manganites. Thus electrical properties of electronic ceramics (NTC) are optimized through the proposed chemical process.

Quantitative measures for shape and size of particles

2002 ◽  
Vol 124 (1-2) ◽  
pp. 94-100 ◽  
Author(s):  
Michael A. Taylor
Keyword(s):  
Size Of Particles ◽  
Shape And Size

scholarly journals Temperature-Dependent Configurational Entropy Calculations for Refractory High-Entropy Alloys

2021 ◽  
Author(s):  
Chiraag M Nataraj ◽  
Axel van de Walle ◽  
Amit Samanta
Keyword(s):  
Cluster Expansion ◽  
Configurational Entropy ◽  
Temperature Limit ◽  
Design Guidelines ◽  
Alloy Design ◽  
Solid Solution Alloy ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Entropy Of Mixing ◽  
The Ideal

AbstractThe cluster expansion formalism for alloys is used to construct surrogate models for three refractory high-entropy alloys (NbTiVZr, HfNbTaTiZr, and AlHfNbTaTiZr). These cluster expansion models are then used along with Monte Carlo methods and thermodynamic integration to calculate the configurational entropy of these refractory high-entropy alloys as a function of temperature. Many solid solution alloy design guidelines are based on the ideal entropy of mixing, which increases monotonically with $$N$$ N , the number of elements in the alloy. However, our results show that at low temperatures, the configurational entropy of these materials is largely independent of $$N$$ N , and the assumption described above only holds in the high-temperature limit. This suggests that alloy design guidelines based on the ideal entropy of mixing require further examination.

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