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Investigation of sintering behavior of ZrO2 (Y) ceramic green body by means of non-isothermal dilatometry and thermokinetic analysis

Surzhikov, A. P. ; Ghyngazov, S. A. ; Frangulyan, T. S. ; Vasil’ev, I. P. ; Chernyavskii, A. V.

Journal of thermal analysis and calorimetry, 2017-05, Vol.128 (2), p.787-794 [Periódico revisado por pares]

Dordrecht: Springer Netherlands

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Título:
Investigation of sintering behavior of ZrO2 (Y) ceramic green body by means of non-isothermal dilatometry and thermokinetic analysis
Autor: Surzhikov, A. P. ; Ghyngazov, S. A. ; Frangulyan, T. S. ; Vasil’ev, I. P. ; Chernyavskii, A. V.
Assuntos: Activation energy ; Analytical Chemistry ; Chemistry ; Chemistry and Materials Science ; Compacts ; Dilatometry ; Extensometers ; Heating ; Inorganic Chemistry ; Measurement Science and Instrumentation ; Phase composition ; Physical Chemistry ; Polymer Sciences ; Shrinkage ; Sintering (powder metallurgy) ; Software ; Ultrafines ; Zirconium dioxide
É parte de: Journal of thermal analysis and calorimetry, 2017-05, Vol.128 (2), p.787-794
Descrição: Using the method of dilatometry, kinetic characteristics of compacts shrinkage manufactured from ultrafine plasmochemical ZrO 2 (Y) powders and commercial Tosoh’s powders are investigated. The shrinkage curves are constructed with a DIL 402 C high-sensitivity dilatometer in a non-isothermal heating mode at different heating rates (1, 2, 5 and 10 °C min −1 ). It is shown that the plasmochemical powders are characterized by a lower sintering efficiency than the Tosoh’s powders. The kinetic results are processed using a Netzsch Thermokinetics license software program developed for those who make use of devices manufactured by the Netzsch-Geratebau GmbH. The kinetic characteristics of compact shrinkage are determined as a function of partial length variation using Friedman’s analysis. Considerable differences are found between the values of apparent shrinkage activation energy for plasmochemical and Tosoh’s powders in the initial and final shrinkage stages. We attribute the mentioned differences in phase composition of the powders and their degree of agglomeration. In the intermediate shrinkage stage, the values of the apparent activation energy obtained for both types of powders have only marginal differences.
Editor: Dordrecht: Springer Netherlands
Idioma: Inglês

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Investigation of sintering behavior of ZrO2 (Y) ceramic green body by means of non-isothermal dilatometry and thermokinetic analysis

Surzhikov, A. P. ; Ghyngazov, S. A. ; Frangulyan, T. S. ; Vasil’ev, I. P. ; Chernyavskii, A. V.

Dordrecht: Springer Netherlands

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