Hybrid synthesis of zirconium oxycarbide nanopowders with defined and controlled composition.
RSC Adv
; 9(6): 3151-3156, 2019 Jan 24.
Article
em En
| MEDLINE
| ID: mdl-30931107
ABSTRACT
A combined synthesis strategy involving a carbothermal reduction and gelation approach with glycine as gelating agent was used to obtain Zr-based (oxy)carbide materials with defined and controlled composition. A comparatively low temperature approach (1500 °C) allows exploration of the ZrC-ZrO2 phase diagram and reproducibly leads to zirconium (oxy)carbide phases with different C/Zr ratios, as confirmed by combined X-ray diffraction (XRD) and transmission electron microscopy (TEM) data. The latter also indicates a chemically very homogeneous distribution of oxygen and carbon throughout the sample bulk, a prerequisite for further characterization of its intrinsic physico-chemical properties. Due to the general variability of the synthesis procedure - variation of metal precursor, amount of gelating agent and carbon precursor source - it is expected that the method can be easily adapted and transferred to other metal - oxycarbide materials.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
RSC Adv
Ano de publicação:
2019
Tipo de documento:
Article