Amorphous Zr(OH)4 to t-ZrO2 transformed isothermally

Superficies y Vacío

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Field Value
 
Title Amorphous Zr(OH)4 to t-ZrO2 transformed isothermally
 
Creator Meza Galvez, Jonathan
Olea Mejía, Oscar
Hernández López, Susana
Vigueras Santiago, Enrique
Camacho López, Marco Antonio
 
Subject Zirconium hydroxide
Tetragonal Zirconia
Isothermal treatment
Raman spectroscopy
 
Description With the aim to study the transformation from the commercially amorphous Zr(OH)4 to the t-ZrO2, phase, the starting material was isothermally treated in a calorimeter at 350, 365, 370, 375 and 380 o C. The TGA coupled to the DSC technique was used to determine with high precision both the temperature and time necessary to achieve the amorphous Zr(OH)4 to  t-ZrO2 transformation. The mass loss and heat flow, as a function of time, were monitored to study the dehydroxylation of Zr(OH)4 and the crystallization processes, respectively. Raman spectroscopy was used to obtain evidence of the t-ZrO2 formation. The DSC results show an exothermic peak (typical of amorphous-crystalline transitions) related to the formation of t-ZrO2. Our results indicate that the time necessary to obtain the t-ZrO2 phase shortens when temperature increases.
 
Publisher Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.
 
Date 2018-09-15
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Original Research
 
Format application/pdf
text/xml
 
Identifier http://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/2018_syv31_1-030044
10.47566/2018_syv31_1-030044
 
Source Superficies y Vacío; Vol. 31 No. 3 (2018); 44-47
Superficies y Vacío; Vol. 31 Núm. 3 (2018); 44-47
1665-3521
 
Language eng
 
Relation http://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/2018_syv31_1-030044/178
http://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/2018_syv31_1-030044/197
 
Rights Copyright (c) 2018 The authors; licensee SMCTSM
https://creativecommons.org/licenses/by/4.0
 

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