Amorphous Zr(OH)4 to t-ZrO2 transformed isothermally
| العنوان: | Amorphous Zr(OH)4 to t-ZrO2 transformed isothermally |
|---|---|
| المؤلفون: | Jonathan Meza Galvez, Susana Hernández López, Oscar Fernando Olea Mejía, Marco Antonio Camacho López, Enrique Vigueras Santiago |
| المصدر: | Superficies y Vacío. 31:44-47 |
| بيانات النشر: | Sociedad Mexicana de Ciencia y Tecnologia de Superficies y Materiales A.C., 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Exothermic reaction, Materials science, Analytical chemistry, Isothermal process, Surfaces, Coatings and Films, Amorphous solid, Calorimeter, law.invention, symbols.namesake, law, Phase (matter), symbols, Crystallization, Raman spectroscopy, Heat flow |
| الوصف: | With the aim to study the transformation from the commercially amorphous Zr(OH) 4 to the t-ZrO 2 , 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-ZrO 2 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-ZrO 2 formation. The DSC results show an exothermic peak (typical of amorphous-crystalline transitions) related to the formation of t-ZrO 2 . Our results indicate that the time necessary to obtain the t-ZrO 2 phase shortens when temperature increases. |
| تدمد: | 1665-3521 |
| DOI: | 10.47566/2018_syv31_1-030044 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ff34eef57e05c6b7e8d924f32cc371b4 https://doi.org/10.47566/2018_syv31_1-030044 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........ff34eef57e05c6b7e8d924f32cc371b4 |
| قاعدة البيانات: | OpenAIRE |
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