Low temperature hydrothermal sintering process for the quasi -complete densification of nanometric α-quartz
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | NDAYISHIMIYE, Arnaud | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LARGETEAU, Alain | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PRAKASAM, Mythili | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PECHEV, Stanislav | |
| hal.structure.identifier | Institut des Sciences Moléculaires [ISM] | |
| dc.contributor.author | DOURGES, Marie-Anne | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GOGLIO, Graziella | |
| dc.date.issued | 2018-03 | |
| dc.identifier.issn | 1359-6462 | |
| dc.description.abstractEn | We report the first successful densification of polycrystalline α-quartz. The innovative hydrothermal sintering process was used as a low temperature route on sol-gel silica nanoparticles (350 MPa, 300 °C, 90 min) in presence of water or aqueous sodium hydroxide solution (from 0.2 M up to 5 M). For the lowest NaOH concentrations, amorphous silica densification is observed, reaching a compactness of 86%. The basic physical-chemical mechanism proceeds through dissolution-precipitation. When NaOH concentration increases, the kinetics of dissolution are faster, nanoparticles totally dissolve and α-quartz is stabilized during precipitation. 98% dense α-quartz is obtained, the crystallite size increases with NaOH concentration. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.title.en | Low temperature hydrothermal sintering process for the quasi -complete densification of nanometric α-quartz | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.scriptamat.2017.10.023 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Scripta Materialia | |
| bordeaux.page | 118-121 | |
| bordeaux.volume | 145 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01737296 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01737296v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Scripta%20Materialia&rft.date=2018-03&rft.volume=145&rft.spage=118-121&rft.epage=118-121&rft.eissn=1359-6462&rft.issn=1359-6462&rft.au=NDAYISHIMIYE,%20Arnaud&LARGETEAU,%20Alain&PRAKASAM,%20Mythili&PECHEV,%20Stanislav&DOURGES,%20Marie-Anne&rft.genre=article |
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