Synthesis of Ti5Si3-x Nb composites by the field-activated combustion method

Shon, In-Jin

doi:10.1007/bf03025963

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…Thus, the surface of as-received Al powder is primarily in the form of Al 2 O 3 . Electro-discharge-sintered Ti 3 Al compact discharged at 1.5 kJ of input energy showed the Al 2p at 74.4 eV with a shoul- der region at about 73.0 eV which corresponds to AlN [23,24]. It is known that the electro-discharge-sintered Ti 3 Al compact contains the lightly nitride surface.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 6 shows a TEM image of the electro-dischargesintered Ti 3 Al compact discharged at input energy of 1.5 kJ. The average crystallite size is about 100-350 nm.…”

Section: Resultsmentioning

confidence: 99%

“…In general, combustion reactions have been initiated by ball-milling in a variety of highly exothermic reaction mixtures. The formation of intermetallics from their elemental components accelerates during ball-milling to become a self-sustaining high temperature reaction [3,4]. Among intermetallic compounds, the titanium aluminide compounds (Ti 3 Al, TiAl and TiAl 3 ) are attractive candidate materials for aerospace structure and engine applications [5].…”

Section: Introductionmentioning

confidence: 99%

“…The formation of intermetallics from their elemental components accelerates during ball-milling to become a self-sustaining high temperature reaction [3,4]. Among intermetallic compounds, the titanium aluminide compounds (Ti 3 Al, TiAl and TiAl 3 ) are attractive candidate materials for aerospace structure and engine applications [5]. The advantages of these materials are their low density, high specific strength, and relatively good properties at elevated temperatures and high creep resistance [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Self-Consolidation and Surface Modification of Mechanical Alloyed Ti-25.0 at.% Al Powder Mixture by Using an Electro-Discharge Technique

Chang¹,

Jang²,

Yoon³

et al. 2017

Archives of Metallurgy and Materials

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Electrical discharges using a capacitance of 450 μF at 0.5, 1.0, and 1.5 kJ input energies were applied in a N 2 atmosphere to obtain the mechanical alloyed Ti 3 Al powder without applying any external pressure. A solid bulk of nanostructured Ti 3 Al was obtained as short as 160 μsec by the Electrical discharge. At the same time, the surface has been modified into the form of Ti and Al nitrides due to the diffusion process of nitrogen to the surface. The input energy was found to be the most important parameter to affect the formation of a solid core and surface chemistry of the compact.

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Section: Resultsmentioning

confidence: 99%

“…Fig. 6 shows a TEM image of the electro-dischargesintered Ti 3 Al compact discharged at input energy of 1.5 kJ. The average crystallite size is about 100-350 nm.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Self-Consolidation and Surface Modification of Mechanical Alloyed Ti-25.0 at.% Al Powder Mixture by Using an Electro-Discharge Technique

Chang¹,

Jang²,

Yoon³

et al. 2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

show abstract

“…In general, combustion reactions have been initiated by ball milling in a variety of highly exothermic reaction mixtures. The formation of intermetallics from their elemental components accelerates during ball milling to become a self-sustaining high temperature reaction [ 3 , 4 ]. Among intermetallic compounds, Ti 5 Si 3 has attracted more interest recently because a number of their properties have potential in materials applications.…”

Section: Introductionmentioning

confidence: 99%

Self‐Consolidation Mechanism of Nanostructured Ti₅Si₃ Compact Induced by Electrical Discharge

Lee

Cheon

et al. 2015

The Scientific World Journal

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Electrical discharge using a capacitance of 450 μF at 7.0 and 8.0 kJ input energies was applied to mechanical alloyed Ti5Si3 powder without applying any external pressure. A solid bulk of nanostructured Ti5Si3 with no compositional deviation was obtained in times as short as 159 μsec by the discharge. During an electrical discharge, the heat generated is the required parameter possibly to melt the Ti5Si3 particles and the pinch force can pressurize the melted powder without allowing the formation of pores. Followed rapid cooling preserved the nanostructure of consolidated Ti5Si3 compact. Three stepped processes during an electrical discharge for the formation of nanostructured Ti5Si3 compact are proposed: (a) a physical breakdown of the surface oxide of Ti5Si3 powder particles, (b) melting and condensation of Ti5Si3 powder by the heat and pinch pressure, respectively, and (c) rapid cooling for the preservation of nanostructure. Complete conversion yielding a single phase Ti5Si3 is primarily dominated by the solid-liquid mechanism.

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Simultaneous synthesis and densification of MoSi2-20vol.%Nb composite and MoSi2-20vol.%ZrO2 composite by field-activated and pressure-assisted combustion

Shon

Kim

Rho

1999

Metals and Materials

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A method to simultaneously synthesize and consolidate MoSi2-20vol.%Nb composite and MoSi2-20vol.% ZrO2 composite from powders of Mo, Si, Nb and ZrO2 was investigated. Combustion synthesis was carded out under combined electric field and mechanical pressure. Highly dense MoSiz-20vol.%Nb and MoSi2-20vol.%ZrO2 composites up to 96% of theoretical density were produced from powders of Mo, Si, Nb and ZrO2 with 60MPa of pressure and 3000A of current on the reactant.

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Synthesis of Ti5Si3-x Nb composites by the field-activated combustion method

Cited by 10 publications

References 11 publications

Self-Consolidation and Surface Modification of Mechanical Alloyed Ti-25.0 at.% Al Powder Mixture by Using an Electro-Discharge Technique

Self-Consolidation and Surface Modification of Mechanical Alloyed Ti-25.0 at.% Al Powder Mixture by Using an Electro-Discharge Technique

Self‐Consolidation Mechanism of Nanostructured Ti₅Si₃ Compact Induced by Electrical Discharge

Simultaneous synthesis and densification of MoSi2-20vol.%Nb composite and MoSi2-20vol.%ZrO2 composite by field-activated and pressure-assisted combustion

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Synthesis of Ti5Si3-x Nb composites by the field-activated combustion method

Cited by 10 publications

References 11 publications

Self-Consolidation and Surface Modification of Mechanical Alloyed Ti-25.0 at.% Al Powder Mixture by Using an Electro-Discharge Technique

Self-Consolidation and Surface Modification of Mechanical Alloyed Ti-25.0 at.% Al Powder Mixture by Using an Electro-Discharge Technique

Self‐Consolidation Mechanism of Nanostructured Ti5Si3 Compact Induced by Electrical Discharge

Simultaneous synthesis and densification of MoSi2-20vol.%Nb composite and MoSi2-20vol.%ZrO2 composite by field-activated and pressure-assisted combustion

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Product

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Self‐Consolidation Mechanism of Nanostructured Ti₅Si₃ Compact Induced by Electrical Discharge