The Interface Structure during Solid State Reactions and Its Influence on Reaction Kinetics and Reaction Mechanism

1996 ◽  
Vol 207-209 ◽  
pp. 185-188 ◽  
Author(s):  
D. Hesse ◽  
P. Werner
Keyword(s):  
Reaction Mechanism ◽  
Solid State ◽  
Reaction Kinetics ◽  
Interface Structure ◽  
Solid State Reactions

Kinetic analysis of non-isothermal solid-state reactions: multi-stage modeling without assumptions in the reaction mechanism

2017 ◽  
Vol 19 (5) ◽  
pp. 3606-3615 ◽  
Author(s):  
Alexey L. Pomerantsev ◽  
Alla V. Kutsenova ◽  
Oxana Ye. Rodionova
Keyword(s):  
Reaction Mechanism ◽  
Solid State ◽  
Linear Regression ◽  
Kinetic Analysis ◽  
Regression Method ◽  
Solid State Reactions ◽  
Linear Regression Method ◽  
Multi Stage ◽  
Thermogravimetric Data ◽  
Non Linear

A novel non-linear regression method for modeling non-isothermal thermogravimetric data is proposed.

White Beam Synchrotron Topographic Studies of the Effects of Localized Stress Fields on the Kinetics of Single Crystal Solid State Reactions.

1988 ◽  
Vol 143 ◽  
Author(s):  
Michael Dudley
Keyword(s):  
Solid State ◽  
Reaction Kinetics ◽  
Local Reaction ◽  
Stress Fields ◽  
Solid State Reactions ◽  
Thermally Induced ◽  
White Beam ◽  
Kinetics Of ◽  
Good Agreement

AbstractWhite Beam Synchrotron Topography has been used to determine the role of localized stress fields in the solid state polymerization of single crystals of the diacetylene PTS. Results indicate that the stress fields due to grown in dislocations can accelerate local reaction kinetics in thermally induced polymerization reactions, although no such effects were previously observable in photolytically or radiolytically induced reactions. Results are analyzed in an analogous fashion to the treatment of the nucleation of solid state phase transformations at dislocations. Good agreement was found between approximate theoretical treatments and experimental observation. The response of the monomer crystal to the inhomogeneous stresses generated as a result of inhomogeneous reaction and the implications regarding local reaction kinetics are discussed in detail.

Microstructural Variations in Melt-Spun Rapidly Solidified Ribbons

1985 ◽  
Vol 43 ◽  
pp. 54-55
Author(s):  
L. A. Bendersky ◽  
W. J. Boettinger
Keyword(s):  
Solid State ◽  
Processing Parameters ◽  
Heat Extraction ◽  
Solid State Reactions ◽  
Careful Examination ◽  
Ion Milling ◽  
Melt Spun ◽  
Wheel Side ◽  
Rapidly Solidified ◽  
Heat Extraction Rate

Rapid solidification produces a wide variety of sub-micron scale microstructure. Generally, the microstructure depends on the imposed melt undercooling and heat extraction rate. The microstructure can vary strongly not only due to processing parameters changes but also during the process itself, as a result of recalescence. Hence, careful examination of different locations in rapidly solidified products should be performed. Additionally, post-solidification solid-state reactions can alter the microstructure.The objective of the present work is to demonstrate the strong microstructural changes in different regions of melt-spun ribbon for three different alloys. The locations of the analyzed structures were near the wheel side (W) and near the center (C) of the ribbons. The TEM specimens were prepared by selective electropolishing or ion milling.

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