Li, Duan ; Li, Wenjie ; Fasel, Claudia ; Shen, James ; Riedel, Ralf (2014)
Sinterability of the oxynitride LaTiO2N with perovskite-type structure.
In: Journal of Alloys and Compounds, 586
doi: 10.1016/j.jallcom.2013.10.071
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Based on a thermal stability study, the sinterability of the oxynitride LaTiO2N was investigated by spark plasma sintering (SPS). The results show that LaTiO2N is thermodynamically unstable above ca. 400 °C in air and ca. 800 °C in argon. While it appears impossible to completely avoid decomposition during sintering, LaTiO2N ceramics with relative density of 74–94% and a residual LaTiO2N content of 57–90 wt% were prepared. By manipulating kinetics, a relative density of 94% was achieved at 1350 °C under an uniaxially applied pressure of 125 MPa. This density is higher than any other counterparts prepared by conventional sintering so far. SPS appears a feasible tool for manipulating the sintering kinetics. It enables the preparation of almost dense LaTiO2N bulks with adequate purity.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Li, Duan ; Li, Wenjie ; Fasel, Claudia ; Shen, James ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Sinterability of the oxynitride LaTiO2N with perovskite-type structure |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Februar 2014 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Alloys and Compounds |
| Jahrgang/Volume einer Zeitschrift: | 586 |
| DOI: | 10.1016/j.jallcom.2013.10.071 |
| Kurzbeschreibung (Abstract): | Based on a thermal stability study, the sinterability of the oxynitride LaTiO2N was investigated by spark plasma sintering (SPS). The results show that LaTiO2N is thermodynamically unstable above ca. 400 °C in air and ca. 800 °C in argon. While it appears impossible to completely avoid decomposition during sintering, LaTiO2N ceramics with relative density of 74–94% and a residual LaTiO2N content of 57–90 wt% were prepared. By manipulating kinetics, a relative density of 94% was achieved at 1350 °C under an uniaxially applied pressure of 125 MPa. This density is higher than any other counterparts prepared by conventional sintering so far. SPS appears a feasible tool for manipulating the sintering kinetics. It enables the preparation of almost dense LaTiO2N bulks with adequate purity. |
| Freie Schlagworte: | Spark plasma sintering, Perovskite-type oxynitride, Sinterability, Thermal analysis, Kinetics, X-ray diffraction |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 21 Feb 2014 09:37 |
| Letzte Änderung: | 21 Feb 2014 09:37 |
| PPN: | |
| Sponsoren: | This work was supported by European Commission through the Marie-Curie ITN project “FUnctional Nitrides for Energy Applications, FUNEA” (FP7-PITN-GA-2010-264873). |
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