Li, Jinwang and Dzivenko, Dmytro and Zerr, Andreas and Fasel, Claudia and Zhou, Yanping and Riedel, Ralf (2005):
Synthesis of Nanocrystalline Zr3N4 and Hf3N4 Powders from Metal Dialkylamides.
In: Zeitschrift für anorganische und allgemeine Chemie, 631 (8), pp. 1449-1455. Wiley-VCH Verlag GmbH, Weinheim, ISSN 0044-2313,
DOI: 10.1002/zaac.200400539,
[Article]
Abstract
A simple process to synthesize Zr3N4 and nitrogen‐rich Hf3N4 powders via ammonolysis of metal dialkylamides, i.e. Zr(NEt2)4 and Hf(NEt2)4, at temperatures below 700 °C is presented. The obtained nitrides have a rhombohedrally distorted NaCl‐type structure, which has previously been reported only for nitrogen‐rich films of these nitrides. Regardless of the atmosphere (N2 and He), the Zr3N4 starts to decompose above about ∼ 650 °C and achieves the highest decomposition rate at about 900 °C, finally yielding the mononitride ZrN. Both Zr3N4 and Hf3N4 powders are nanocrystalline with the crystal size of about 2 nm.
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Li, Jinwang and Dzivenko, Dmytro and Zerr, Andreas and Fasel, Claudia and Zhou, Yanping and Riedel, Ralf |
| Title: | Synthesis of Nanocrystalline Zr3N4 and Hf3N4 Powders from Metal Dialkylamides |
| Language: | English |
| Abstract: | A simple process to synthesize Zr3N4 and nitrogen‐rich Hf3N4 powders via ammonolysis of metal dialkylamides, i.e. Zr(NEt2)4 and Hf(NEt2)4, at temperatures below 700 °C is presented. The obtained nitrides have a rhombohedrally distorted NaCl‐type structure, which has previously been reported only for nitrogen‐rich films of these nitrides. Regardless of the atmosphere (N2 and He), the Zr3N4 starts to decompose above about ∼ 650 °C and achieves the highest decomposition rate at about 900 °C, finally yielding the mononitride ZrN. Both Zr3N4 and Hf3N4 powders are nanocrystalline with the crystal size of about 2 nm. |
| Journal or Publication Title: | Zeitschrift für anorganische und allgemeine Chemie |
| Journal volume: | 631 |
| Number: | 8 |
| Publisher: | Wiley-VCH Verlag GmbH, Weinheim |
| Uncontrolled Keywords: | Ammonolysis, Metal dialkylamide, Zirconium(IV) nitride, Hafnium(IV) nitride, Nano‐crystals |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids |
| Date Deposited: | 17 Dec 2018 12:19 |
| DOI: | 10.1002/zaac.200400539 |
| Official URL: | https://doi.org/10.1002/zaac.200400539 |
| Additional Information: | Dedicated to Professor Gerd Becker on the Occasion of his 65th Birthday |
| Funders: | J.L. thanks the Alexander von Humboldt Foundation, Germany for granting a research fellowship., A.Z. is grateful to the Deutsche Forschungsgemeinschaft for the financial support. |
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