Mechanical and Thermal Dilution Methods Used in the Thermographic and Thermogravimetric Analysis of High-Temperature Decomposition of Condensed Materials

2008 ◽  
pp. 99-109
Author(s):  
Alexander S. Shteinberg
Keyword(s):  
High Temperature ◽  
Thermogravimetric Analysis ◽  
Temperature Decomposition ◽  
Condensed Materials ◽  
Thermal Dilution

Singularities of high temperature decomposition in Magnico alloys

1965 ◽  
Vol 7 (2) ◽  
pp. 77-80
Author(s):  
N. I. Mikheev ◽  
Ya. M. Dovgalevskii ◽  
E. G. Povolotskii
Keyword(s):  
High Temperature ◽  
Temperature Decomposition

scholarly journals High Temperature Degradation Mechanism of Concrete with Plastering Layer

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 398
Author(s):  
Chihao Liu ◽  
Jiajian Chen
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Thermal Decomposition ◽  
Electron Microscope ◽  
High Temperature ◽  
Thermogravimetric Analysis ◽  
Degradation Mechanism ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Scanning Electron

At present, the research on the high temperature degradation of concrete usually focuses on only the degradation of concrete itself without considering the effect of the plastering layer. It is necessary to take into account the influence of the plastering layer on the high temperature degradation of concrete. With an increase in the water/cement ratio, the explosion of concrete disappeared. Although increasing the water/cement ratio can alleviate the cracking of concrete due to lower pressure, it leads to a decrease in the mechanical properties of concrete after heating. It is proved that besides the water/cement ratio, the apparent phenomena and mechanical properties of concrete at high temperature can be affected by the plastering layer. The plastering layer can relieve the high temperature cracking of concrete, and even inhibit the high temperature explosion of concrete with 0.30 water/cement ratio. By means of an XRD test, scanning electron microscope test and thermogravimetric analysis, it is found that the plastering layer can promote the rehydration of unhydrated cement particles of 0.30 water/cement ratio concrete at high temperature and then promote the mechanical properties of concrete at 400 °C. However, the plastering layer accelerated the thermal decomposition of C-S-H gel of concrete with a water/cement ratio of 0.40 at high temperature, and finally accelerate the decline of mechanical property of concrete. To conclude, the low water/cement ratio and plastering layer can delay the deterioration of concrete at high temperature.

scholarly journals FeOx/Al2O3 catalysts for high-temperature decomposition of N2O under conditions of NH3 oxidation in nitric acid production

2018 ◽  
Vol 8 (11) ◽  
pp. 2841-2852 ◽  
Author(s):  
Galina Sádovská ◽  
Edyta Tabor ◽  
Milan Bernauer ◽  
Petr Sazama ◽  
Vlastimil Fíla ◽  
...  
Keyword(s):  
High Temperature ◽  
Nitric Acid ◽  
Acid Production ◽  
Active Species ◽  
Gas Mixture ◽  
Temperature Decomposition ◽  
Nh3 Oxidation ◽  
Oxidation Of Ammonia

The δ and θ Al2O3 phases well stabilized Fe(iii) in Td or Oh coordination, which were identified as the active species in high temperature decomposition of N2O in a complex gas mixture produced by oxidation of ammonia.

scholarly journals Structure and High-Temperature Decomposition Process of LiNiO2

1993 ◽  
Vol 61 (12) ◽  
pp. 1453-1454 ◽  
Author(s):  
Ryoji KANNO ◽  
Hiromichi KUBO ◽  
Yoji KAWAMOTO ◽  
Yasuo TAKEDA
Keyword(s):  
High Temperature ◽  
Decomposition Process ◽  
Temperature Decomposition

scholarly journals Preparation of LaNiO3 perovskite by oxalate and carbonate precursor method for utilization as catalyst for high-temperature decomposition of N2O

2019 ◽  
Vol 138 (6) ◽  
pp. 4197-4202 ◽  
Author(s):  
Petr Bělina ◽  
Galina Sádovská ◽  
Veronika Krejčíková ◽  
Žaneta Dohnalová ◽  
Petra Šulcová
Keyword(s):  
High Temperature ◽  
Precursor Method ◽  
Temperature Decomposition ◽  
Carbonate Precursor
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