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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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International Institute for the Science of Sintering, Beograd
2021-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2021/0350-820X2102267G.pdf |
| _version_ | 1818649364440023040 |
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| author | Gauna Matías R. Martinez Juan M. Conconi María S. Suárez Gustavo Rendtorff Nicolás M. |
| author_facet | Gauna Matías R. Martinez Juan M. Conconi María S. Suárez Gustavo Rendtorff Nicolás M. |
| author_sort | Gauna Matías R. |
| collection | DOAJ |
| 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-1/2) are
comparable with the best figures reported. |
| first_indexed | 2024-12-17T01:33:09Z |
| format | Article |
| id | doaj.art-27fb7d5f6db0423f9f753345d4e222ca |
| institution | Directory Open Access Journal |
| issn | 0350-820X 1820-7413 |
| language | English |
| last_indexed | 2024-12-17T01:33:09Z |
| publishDate | 2021-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj.art-27fb7d5f6db0423f9f753345d4e222ca2022-12-21T22:08:31ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X1820-74132021-01-0153226728310.2298/SOS2102267G0350-820X2102267GEffect of TiO2 in fine zircon sintering and propertiesGauna Matías R.0Martinez Juan M.1Conconi María S.2Suárez Gustavo3Rendtorff Nicolás M.4CETMIC, Centro de Tecnología de Recursos Minerales y Cerámica (CIC-CONICET La Plata-UNLP) Cno., Buenos Aires, Argentina + Departamento de Construcciones, Facultad de Ingeniería, Universidad Nacional de La Plata, Buenos Aires, ArgentinaCETMIC, Centro de Tecnología de Recursos Minerales y Cerámica (CIC-CONICET La Plata-UNLP) Cno., Buenos Aires, Argentina + Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Buenos Aires, ArgentinaCETMIC, Centro de Tecnología de Recursos Minerales y Cerámica (CIC-CONICET La Plata-UNLP) Cno., Buenos Aires, Argentina + Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Buenos Aires, ArgentinaCETMIC, Centro de Tecnología de Recursos Minerales y Cerámica (CIC-CONICET La Plata-UNLP) Cno., Buenos Aires, Argentina + Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Buenos Aires, ArgentinaCETMIC, Centro de Tecnología de Recursos Minerales y Cerámica (CIC-CONICET La Plata-UNLP) Cno., Buenos Aires, Argentina + Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Buenos Aires, ArgentinaThe 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-1/2) are comparable with the best figures reported.http://www.doiserbia.nb.rs/img/doi/0350-820X/2021/0350-820X2102267G.pdfzircontio2processingsinteringproperties |
| spellingShingle | Gauna Matías R. Martinez Juan M. Conconi María S. Suárez Gustavo Rendtorff Nicolás M. Effect of TiO2 in fine zircon sintering and properties Science of Sintering zircon tio2 processing sintering properties |
| title | 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_short | Effect of TiO2 in fine zircon sintering and properties |
| title_sort | effect of tio2 in fine zircon sintering and properties |
| topic | zircon tio2 processing sintering properties |
| url | http://www.doiserbia.nb.rs/img/doi/0350-820X/2021/0350-820X2102267G.pdf |
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