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Synthesis of Nanocrystalline Zr3N4 and Hf3N4 Powders from Metal Dialkylamides

Li, Jinwang ; Dzivenko, Dmytro ; Zerr, Andreas ; Fasel, Claudia ; Zhou, Yanping ; Riedel, Ralf (2005)
Synthesis of Nanocrystalline Zr3N4 and Hf3N4 Powders from Metal Dialkylamides.
In: Zeitschrift für anorganische und allgemeine Chemie, 631 (8)
doi: 10.1002/zaac.200400539
Article, Bibliographie

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 ; Dzivenko, Dmytro ; Zerr, Andreas ; Fasel, Claudia ; Zhou, Yanping ; Riedel, Ralf
Type of entry: Bibliographie
Title: Synthesis of Nanocrystalline Zr3N4 and Hf3N4 Powders from Metal Dialkylamides
Language: English
Date: June 2005
Publisher: Wiley-VCH Verlag GmbH, Weinheim
Journal or Publication Title: Zeitschrift für anorganische und allgemeine Chemie
Volume of the journal: 631
Issue Number: 8
DOI: 10.1002/zaac.200400539
URL / URN: https://doi.org/10.1002/zaac.200400539
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.

Uncontrolled Keywords: Ammonolysis, Metal dialkylamide, Zirconium(IV) nitride, Hafnium(IV) nitride, Nano‐crystals
Additional Information:

Dedicated to Professor Gerd Becker on the Occasion of his 65th Birthday

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
Last Modified: 17 Dec 2018 12:19
PPN:
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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