scholarly journals Sintering nanodisperse zirconium powders with various stabilizing additives

2011 ◽  
Vol 43 (2) ◽  
pp. 127-132 ◽  
Author(s):  
V.N. Antsiferov ◽  
S.E. Porozova ◽  
V.B. Kulmetyeva
Keyword(s):  
Thermomechanical Analysis ◽  
Sintering Kinetics ◽  
Powder Samples ◽  
Characteristic Points ◽  
Temperature Ranges ◽  
Kinetics Of ◽  
Zirconium Powder

Effect of various stabilizing additives on sintering kinetics of nanodisperse powders was studied by thermomechanical analysis. Temperature ranges of the most intense shrinking, characteristic points of shrinking rate changes were established. Peaks characterizing the most intense shrinking of nanodisperse zirconium powder samples were shown to allow to arrange the stabilizing additives as follows: Y2O3?CeO2?TiO2.

scholarly journals Pyrolysis and Oxidation of PAN in Dry Air. Thermoanalytical Methods

1970 ◽  
Vol 17 (1) ◽  
pp. 38-42
Author(s):  
Anna BIEDUNKIEWICZ ◽  
Pawel FIGIEL ◽  
Marta SABARA
Keyword(s):  
Temperature Increase ◽  
Heating Rates ◽  
Linear Change ◽  
Dry Air ◽  
Isothermal Conditions ◽  
Gaseous Products ◽  
Heterogeneous Processes ◽  
Temperature Ranges ◽  
Higher Temperature ◽  
Kinetics Of

The results of investigations on pyrolysis and oxidation of pure polyacrylonitrile (PAN) and its mixture with N,N-dimethylformamide (DMF) under non-isothermal conditions at linear change of samples temperature in time are presented. In each case process proceeded in different way. During pyrolysis of pure PAN the material containing mainly the product after PAN cyclization was obtained, while pyrolysis of PAN+DMF mixture gave the product after cyclization and stabilization. Under conditions of measurements, in both temperature ranges, series of gaseous products were formed.For the PAN-DMF system measurements at different samples heating rates were performed. The obtained results were in accordance with the kinetics of heterogeneous processes theory. The process rates in stages increased along with the temperature increase, and TG, DTG and HF function curves were shifted into higher temperature range. This means that the process of pyrolysis and oxidation of PAN in dry air can be carried out in a controlled way.http://dx.doi.org/10.5755/j01.ms.17.1.246

Effect of aluminate additions on the isothermal sintering kinetics of mechanically activated corundum

2007 ◽  
Vol 43 (2) ◽  
pp. 153-155
Author(s):  
N. F. Kosenko ◽  
N. V. Filatova ◽  
A. A. Shiganov
Keyword(s):  
Sintering Kinetics ◽  
Kinetics Of

Initial sintering kinetics of non-stoichiometric CeO2−x

2021 ◽  
Vol 272 ◽  
pp. 115369
Author(s):  
Masashi Watanabe ◽  
Takayuki Seki
Keyword(s):  
Sintering Kinetics ◽  
Kinetics Of

Study of the Sintering Kinetics of Silicon Nitride Containing Ceria and Alumina Additives

2001 ◽  
Vol 189-191 ◽  
pp. 120-125 ◽  
Author(s):  
J. Marchi ◽  
José Carlos Bressiani ◽  
Ana Helena A. Bressiani
Keyword(s):  
Silicon Nitride ◽  
Sintering Kinetics ◽  
Kinetics Of

scholarly journals Kinetic study of Mongolian coals by thermal analysis

2018 ◽  
Vol 18 (44) ◽  
pp. 20-23
Author(s):  
Jargalmaa S ◽  
Tsatsral G ◽  
Battsetseg M ◽  
Batkhishig D ◽  
Ankhtuya A ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Thermal Characterization ◽  
Low Rank ◽  
Weight Changes ◽  
Heating Rates ◽  
Weight Losses ◽  
Brown Coals ◽  
Temperature Ranges ◽  
Kinetics Of

Thermal analysis was used for the thermal characterization of the coal samples. The experiments were performed to study the pyrolysis and gasification kinetics of typical Mongolian brown coals. Low rank coals from Shivee ovoo, Ulaan ovoo, Aduun chuluun and Baganuur deposits have been investigated. Coal samples were heated in the thermogravimetric apparatus under argon at a temperature ranges of 25-1020ºC with heating rates of 10, 20, 30 and 40ºC/min. Thermogravimetry (TG) and derivative thermogravimetry (DTG) were performed to measure weight changes and rates of weight losses used for calculating the kinetic parameters. The activation energy (Ea) was calculated from the experimental results by using an Arrhenius type kinetic model.

scholarly journals Sintering Kinetics of Inkjet-Printed Conductive Silver Lines on Insulating Plastic Substrate

2015 ◽  
Vol 46 (3) ◽  
pp. 1542-1547 ◽  
Author(s):  
Wenchao Zhou ◽  
Frederick A. List ◽  
Chad E. Duty ◽  
Sudarsanam S. Babu
Keyword(s):  
Plastic Substrate ◽  
Sintering Kinetics ◽  
Kinetics Of

Anisothermal densification kinetics of the cold sintering process below 150 °C

2020 ◽  
Vol 8 (17) ◽  
pp. 5668-5672 ◽  
Author(s):  
Sun Hwi Bang ◽  
Arnaud Ndayishimiye ◽  
Clive A. Randall
Keyword(s):  
Ceramic Powder ◽  
Sintering Process ◽  
Process Variables ◽  
Densification Process ◽  
Sintering Kinetics ◽  
Equilibrium Process ◽  
Process Methodology ◽  
Kinetics Of ◽  
Reduced Temperature ◽  
Non Equilibrium

Cold sintering is an emerging non-equilibrium process methodology that densifies ceramic powder at significantly reduced temperature and time, and its sintering kinetics can be identified by controlling four densification process variables.

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