An experimental investigation on combustion synthesis of transition metal silicides V5Si3, Nb5Si3, and Ta5Si3

Yeh, C.L.; Chen, W.H.

doi:10.1016/j.jallcom.2006.08.075

Cited by 34 publications

(10 citation statements)

References 25 publications

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“…Details of the experimental setup and measurement approach were reported elsewhere [19,20]. The microstructure of synthesized products was examined under a scanning electron microscope (SEM) (Hitachi S-3000N), and phase composition was analyzed by an X-ray diffractometer (XRD) (Shimadzu XRD-6000) with Cu K␣ radiation.…”

Section: Experimental Methods Of Approachmentioning

confidence: 99%

Effects of TiC and Al4C3 addition on combustion synthesis of Ti2AlC

Yeh

Shen

2009

Journal of Alloys and Compounds

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Section: Experimental Methods Of Approachmentioning

confidence: 99%

Effects of TiC and Al4C3 addition on combustion synthesis of Ti2AlC

Yeh

Shen

2009

Journal of Alloys and Compounds

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“…Details of the experimental setup and measurement approach were reported elsewhere [21,22]. Phase composition of the burned sample was analyzed by an X-ray diffractometer (Shimadzu XRD-6000) with Cu K␣ radiation operating at 40 kV.…”

Section: Experimental Methods Of Approachmentioning

confidence: 99%

Combustion synthesis of Ti3AlC2 from Ti/Al/C/TiC powder compacts

Yeh

Shen

2008

Journal of Alloys and Compounds

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“…As a member of refractory metals, tantalum is a candidate material for applications in high temperature hardware because of its high melting temperature and excellent ductility [7]. Usually the Ta-Si compounds are prepared by self-propagating high-temperature synthesis (SHS) from elemental powder compacts of corresponding stoichiometries [8,9]. From the Ta-Si binary phase diagram [10], the Ta 5 Si 3 phase has three different structures: D8 m , D8 l , and D8 8 .…”

Section: Introductionmentioning

confidence: 99%

Phase stability and physical properties ofTa5Si3compounds from first-principles calculations

et al. 2009

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We present a study of the thermodynamic and physical properties of Ta 5 Si 3 compounds by means of density functional theory based calculations. Among the three different structures (D8 m , D8 l , D8 8 ), the D8 l structure (Cr 5 B 3 -prototype) is the low temperature phase with a high formation enthalpy of -449.20kJ/mol, the D8 m structure (W 5 Si 3 -prototype) is the high temperature phase with a formation enthalpy of -419.36kJ/mol, and the D8 8 structure (Mn 5 Si 3 -prototype) is a metastable phase. The optimized lattice constants of the different Ta 5 Si 3 compounds are also in good agreement with the experimental data. The electronic density of states (DOS) and the bonding charge density have also been calculated to elucidate the bonding mechanism in these compounds and the results indicate that bonding is mostly of covalent nature.The elastic constants of the D8 m and D8 l structures have been calculated together with the different moduli. Finally, by using a quasiharmonic Debye model, the Debye temperature, the heat capacity, the coefficient of thermal expansion and the Grüneisen parameter have also been obtained in the present work. The transformation temperature (2303.7K) between the D8 m and the D8 l structures has been predicted by means of the Gibbs energy, and this predicted temperature (2303.7K) is close to the experimental value (2433.5K).

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An experimental investigation on combustion synthesis of transition metal silicides V5Si3, Nb5Si3, and Ta5Si3

Cited by 34 publications

References 25 publications

Effects of TiC and Al4C3 addition on combustion synthesis of Ti2AlC

Effects of TiC and Al4C3 addition on combustion synthesis of Ti2AlC

Combustion synthesis of Ti3AlC2 from Ti/Al/C/TiC powder compacts

Phase stability and physical properties ofTa5Si3compounds from first-principles calculations

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