Algae fiber polypropylene composites: Modeling of the degradation by solid state kinetics

2016 ◽  
Vol 134 (12) ◽  
Author(s):  
Alejandra Constante ◽  
Selvum Pillay
Keyword(s):  
Solid State ◽  
Polypropylene Composites ◽  
Solid State Kinetics

The Prout-Tompkins rate equation in solid-state kinetics

1997 ◽  
Vol 300 (1-2) ◽  
pp. 93-106 ◽  
Author(s):  
Michael E. Brown
Keyword(s):  
Solid State ◽  
Rate Equation ◽  
Solid State Kinetics

Kinetic analysis of solid-state processes

2001 ◽  
Vol 16 (6) ◽  
pp. 1862-1871 ◽  
Author(s):  
Jiří Málek ◽  
Takefumi Mitsuhashi ◽  
José Manuel Criado
Keyword(s):  
Solid State ◽  
Kinetic Analysis ◽  
Crystallization Process ◽  
Good Description ◽  
Simple Method ◽  
Solid State Kinetics ◽  
Kinetics Of ◽  
Nonisothermal Conditions ◽  
Two Parameter

A simple method for kinetic analysis of solid-state processes has been developed. A criteria capable of classifying different processes is explored here with a view toward visualizing the complexity of solid-state kinetics. They provide a useful tool for the determination of the most suitable kinetic model. The method has been applied to the analysis of crystallization processes in amorphous ZrO2 and RuO2. It is found that the crystallization kinetics of as-prepared sample exhibits a complex behavior under nonisothermal conditions. This is probably due to an overlapping of the nucleation- and crystal-growth processes at the beginning of crystallization. As a consequence, the Johnson–Mehl–Avrami nucleation-growth model cannot be applied. A two-parameter autocatalytic model provides a good description of the crystallization process under isothermal and nonisothermal conditions.

Vacancies and Self-Interstitials

MRS Bulletin ◽  
1991 ◽  
Vol 16 (11) ◽  
pp. 33-36 ◽  
Author(s):  
H.B. Huntington
Keyword(s):  
Solid State ◽  
Early Stage ◽  
Alkali Halides ◽  
Static Case ◽  
Solid State Kinetics ◽  
Ring Mechanism ◽  
Frenkel Defects ◽  
Specific Calculations ◽  
To Come ◽  
The Individual

This article aims to review in rather cursory fashion the ways the concepts of lattice defects have contributed at an early stage to our understanding of solid-state kinetics in metals and insulators.The importance of point defects in solid-state kinetics was just beginning to be widely recognized in the late 1930s. The crucial experiments of Kirkendall and others were still to come. Many of the leaders in the field of metallurgy believed almost tacitly that diffusion in substitutional alloys occurred by direct interchange or perhaps a ring mechanism.For the ionic salts, however, basic calculations were further advanced, and it was possible to figure quite confidently the role of Schottky and Frenkel defects in facilitating atom movements. In their seminal paper, Mott and Littleton made specific calculations as to the energies involved in diffusion by the various mechanisms and hence to the relative importance of these mechanisms in the kinetics of these materials. They began by taking over the Born-Mayer short-range formula for ionic repulsion. Next they treated in detail the polarization response of the salt to an extra charge in the lattice, whether interstitial or vacancy. This polarization included the individual polarizabilities of the ions and, for the static case, the ion displacements. Application of this analysis gave good quantitative results for the activation energies to be expected for diffusion and ionic conductivity. For the alkali halides it was made clear that the Schottky defect would dominate and that Frenkel defects would be few.

An advanced reaction model determination methodology in solid-state kinetics based on Arrhenius parameters variation

2015 ◽  
Vol 122 (1) ◽  
pp. 175-188 ◽  
Author(s):  
Seyed Hadi Shahcheraghi ◽  
Gholam Reza Khayati ◽  
Mohammad Ranjbar
Keyword(s):  
Solid State ◽  
Reaction Model ◽  
Arrhenius Parameters ◽  
Solid State Kinetics ◽  
Model Determination

Lessons in solid-state kinetics from nuclear energy research

JOM ◽  
1989 ◽  
Vol 41 (12) ◽  
pp. 20-22
Author(s):  
Steven J. Rothman
Keyword(s):  
Solid State ◽  
Nuclear Energy ◽  
Energy Research ◽  
Solid State Kinetics

scholarly journals Modulation enhanced diffraction: a new tool for solving crystal structures and study solid-state kinetics

2011 ◽  
Vol 67 (a1) ◽  
pp. C165-C166
Author(s):  
W. van Beek ◽  
D. Chernyshov ◽  
H. Emerich ◽  
A. Urakawa ◽  
L. Palin ◽  
...  
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Solid State Kinetics
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