Synthesis and oxidation of Zr3Al3C5 powders
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Abstract
Predominantly single phase Zr3Al3C5 powders were synthesized in an Ar atmosphere using Zr – Al intermetallics and graphite as starting materials. The reaction path of Zr3Al3C5 synthesis was discussed based on differential scanning calorimetry and X-ray diffraction results. Lattice parameters of Zr3Al3C5 determined using the Rietveld method are a = 3.347 Å and c = 27.642 Å. In addition, the oxidation of Zr3Al3C5 powders was tested by using thermogravimetry – differential scanning calorimetry. The starting and complete oxidation temperatures are 400 °C and 1200 °C, respectively. These temperatures are much higher than those for ZrC, suggesting that Zr3Al3C5 has better oxidation resistance than ZrC. On the other hand, the oxidation degree of Zr3Al3C5, defined for the complete carbide – oxide transformation, overshot 100 % during oxidation. This overshooting is attributed to the formation of amorphous carbon. The phase evolution during the oxidation of Zr3Al3C5 was also investigated.
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© 2007, Carl Hanser Verlag, München
Articles in the same Issue
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- Influence of interfaces on the mechanical properties of ultrahigh carbon steel multilayer laminates
- Thermomechanical processing of AA6061 billets for semi-solid forming
- Infrared spectroscopy and X-ray diffraction data of In – Se compounds
- Synthesis and characterization of MgAlON–BN composites
- Neutron diffraction residual stress analysis of steel engineering components: a study of the elastic and plastic anisotropy
- Notifications
- DGM News
Articles in the same Issue
- Contents
- Contents
- Editorial
- Editorial
- Basic
- Synthesis and oxidation of Zr3Al3C5 powders
- Standard Gibbs energy of formation of Zn17Y2 and Zn12Y determined by solution calorimetry and measurement of heat capacity from near zero Kelvin
- Phase equilibria in the Zn–Fe–S system at 450°C
- Formation of δ-Al2O3 hollow nanoparticles via a chemical vapor condensation process
- Low-cycle fatigue and damage of an uncoated and coated single crystal nickel-base superalloy SCB
- Fluidity of Mg–Al–Ca alloys in the high-pressure die casting process
- Applied
- Mechanical properties of rope-reinforced aluminium extrusions under quasistatic loading conditions
- Influence of interfaces on the mechanical properties of ultrahigh carbon steel multilayer laminates
- Thermomechanical processing of AA6061 billets for semi-solid forming
- Infrared spectroscopy and X-ray diffraction data of In – Se compounds
- Synthesis and characterization of MgAlON–BN composites
- Neutron diffraction residual stress analysis of steel engineering components: a study of the elastic and plastic anisotropy
- Notifications
- DGM News