An investigation on crystallization property, thermodynamics and kinetics of wollastonite glass ceramics

2018 ◽  
Vol 25 (8) ◽  
pp. 1888-1894 ◽  
Author(s):  
Wei Si ◽  
Chao Ding
Keyword(s):  
Glass Ceramics ◽  
Crystallization Property ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of

Thermodynamic and Kinetic Analyses of Calcined Kaolin Precursors Used for Synthesis of Mullite Nanocomposite

2010 ◽  
Vol 148-149 ◽  
pp. 1751-1754
Author(s):  
Nan Chun Chen ◽  
Han Mei Ao ◽  
Wei Wang ◽  
Quan Hong Li ◽  
Ai Ping Deng
Keyword(s):  
Reaction Order ◽  
Reaction System ◽  
Preparation Process ◽  
Calcine Temperature ◽  
Crystallization Property ◽  
Thermodynamics And Kinetics ◽  
System Temperature ◽  
Average Size ◽  
Calcined Kaolin ◽  
Kinetics Of

Mullite precursor was prepared from kaoline when calcined at 1250 °C，when the concentration of sodium hydroxide of 3 mol/l; crystallization temperature of 80 °C; holding time of 3 h and precursor concentration of 0.15 g/ml, the morphology of the prepared mullite nanocomposite appears spherical-like, and it has good crystallization property and low agglomeration, and the average size of the particles is about 60.9 nm. Both the thermodymics and kinetics of mullite precursor have been studied. The results are as follows: the reaction started when the calcine temperature T﹥495°C; mullite precursor formed when the reaction system temperature 1000 °C; the activation energy of precursor Ea=928.3 KJ/mol; the reaction order n=1.33. We have reported our successful experiments to use kaolin to synthesize mullite nanocomposite with satisfying, spherical morphology, relatively homogenous grain average size of 60.9 nm, and little aggregation[1-2]. This paper presents an investigation of the thermodynamics and kinetics of the precursor preparation process.

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

Thermodynamics and kinetics of hydriding of the Zr(Ni0.75V0.25)2 laves phase

2004 ◽  
Vol 29 (2) ◽  
pp. 1-9
Author(s):  
Mustapha Boulghallat ◽  
Ahmed Jouaiti ◽  
Norbert Gérard
Keyword(s):  
Laves Phase ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of

Concurrent kinetics of crystallization and toughening in multicomponent biomedical SiO2-Li2O-P2O5-ZrO2 glass-ceramics

2021 ◽  
Vol 554 ◽  
pp. 120607
Author(s):  
Julia Lubauer ◽  
Renan Belli ◽  
Anselm Petschelt ◽  
Maria Rita Cicconi ◽  
Katrin Hurle ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Kinetics Of Crystallization ◽  
Kinetics Of

Thermodynamics and kinetics of low pressure methanol synthesis

1995 ◽  
Vol 58 (2) ◽  
pp. 101-108 ◽  
Author(s):  
Jerzy Skrzypek ◽  
Maria Lachowska ◽  
Mirosław Grzesik ◽  
Jerzy Słoczyński ◽  
Paweł Nowak
Keyword(s):  
Methanol Synthesis ◽  
Low Pressure ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of

scholarly journals Thermodynamics and kinetics of glassy and liquid phase-change materials

2021 ◽  
Vol 135 ◽  
pp. 106094
Author(s):  
Narges Amini ◽  
Julian Pries ◽  
Yudong Cheng ◽  
Christoph Persch ◽  
Matthias Wuttig ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Phase Change ◽  
Phase Change Materials ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of

The thermodynamics and kinetics of the synthesis of poly(acid) amides with alicyclic structures in the main chain

1977 ◽  
Vol 19 (11) ◽  
pp. 2878-2884 ◽  
Author(s):  
B.A Zhubanov ◽  
V.A Solomin ◽  
P.Ye Messerle ◽  
N.G Avetisyan ◽  
V.D Moiseyev
Keyword(s):  
Main Chain ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of
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