Effect of TiO₂ in Fine Zircon Sintering and Properties
The effect of the TiO₂ addition in the ceramic processing of dense zircon materials from zircon fine powders was established. The addition of TiO₂ (5-10 wt%) permitted to obtain dense ceramics at lower temperatures (100-150 oC below), with comparable mechanical behavior. The thermochemical processes...
| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/128599 |
| Aporte de: |
| id |
I19-R120-10915-128599 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Química Ingeniería Zircon TiO2 Processing Sintering Properties |
| spellingShingle |
Ciencias Exactas Química Ingeniería Zircon TiO2 Processing Sintering Properties Gauna, Matías Roberto Martínez, Juan Manuel Conconi, María Susana Suárez, Gustavo Rendtorff Birrer, Nicolás Maximiliano Effect of TiO₂ in Fine Zircon Sintering and Properties |
| topic_facet |
Ciencias Exactas Química Ingeniería Zircon TiO2 Processing Sintering Properties |
| description |
The effect of the TiO₂ addition in the ceramic processing of dense zircon materials from zircon fine powders was established. The addition of TiO₂ (5-10 wt%) permitted to obtain dense ceramics at lower temperatures (100-150 oC below), with comparable mechanical behavior. The thermochemical processes were described after a multi-technique experimental approach, which included a sintering analysis, powder X-Ray diffraction analysis (XRD), scanning electronic microscopy (SEM) and Vickers hardness of the polished dense obtained ceramics. After 1400 oC heating programs, the added TiO₂ acts as a sintering aid with no important chemical reactions, and presented improved mechanical behavior in comparison with pure zircon ceramics. On the other side, in samples fired at 1500 oC, TiO₂ partially (≈50 %) reacts with zircon, forming ZrTiO4, while the formed SiO₂ goes to the grain boundaries. Samples with 5 wt% TiO₂ present better mechanical behavior than the ones with 10 wt%. The performed mechanical characterization indicates the merits of the material processed by this inexpensive processing route. Developed density, hardness (≈10 GPa) and fracture toughness (≈2 MPa.m<sup>-1/2</sup>) are comparable with the best figures reported. |
| format |
Articulo Articulo |
| author |
Gauna, Matías Roberto Martínez, Juan Manuel Conconi, María Susana Suárez, Gustavo Rendtorff Birrer, Nicolás Maximiliano |
| author_facet |
Gauna, Matías Roberto Martínez, Juan Manuel Conconi, María Susana Suárez, Gustavo Rendtorff Birrer, Nicolás Maximiliano |
| author_sort |
Gauna, Matías Roberto |
| title |
Effect of TiO₂ in Fine Zircon Sintering and Properties |
| title_short |
Effect of TiO₂ in Fine Zircon Sintering and Properties |
| title_full |
Effect of TiO₂ in Fine Zircon Sintering and Properties |
| title_fullStr |
Effect of TiO₂ in Fine Zircon Sintering and Properties |
| title_full_unstemmed |
Effect of TiO₂ in Fine Zircon Sintering and Properties |
| title_sort |
effect of tio₂ in fine zircon sintering and properties |
| publishDate |
2021 |
| url |
http://sedici.unlp.edu.ar/handle/10915/128599 |
| work_keys_str_mv |
AT gaunamatiasroberto effectoftio2infinezirconsinteringandproperties AT martinezjuanmanuel effectoftio2infinezirconsinteringandproperties AT conconimariasusana effectoftio2infinezirconsinteringandproperties AT suarezgustavo effectoftio2infinezirconsinteringandproperties AT rendtorffbirrernicolasmaximiliano effectoftio2infinezirconsinteringandproperties |
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Repositorios |
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1764820452578951170 |