Investigations of Tungsten Based Intermetallic Alloys by Self Propagating High Temperature Synthesis from Metal Oxide Precursors

Tawat Chanadee; Jessada Wannasin; Niyomwas Sutham

doi:10.4028/www.scientific.net/AMR.488-489.300

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 488-489Investigations of Tungsten Based Intermetallic...

Investigations of Tungsten Based Intermetallic Alloys by Self Propagating High Temperature Synthesis from Metal Oxide Precursors

Abstract:

The in-situ self propagating high temperature synthesis technique were used to synthesis tungsten based intermetallic alloys from WO₃/SiO₂/Al and WO₃/B₂O₃/Al reactant mixture system. The reaction was carries out in a SHS reactor under static argon gas at the pressure of 0.5 MPa. The standard Gibbs energy minimization method was used to calculate the equilibrium composition of the reacting species. The microstructure and phase distribution of the SHS reaction products were characterized by scanning electron microscopy (SEM) and energy dispersive x-ray (EDX), respectively. The results indicate that complete reaction of precursors to yield Al2O3-WSi2 and Al2O3-WB as product composites with clearly separation between Al2O3 and WB.

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Advanced Materials Research (Volumes 488-489)

Pages:

300-304

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.488-489.300

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Online since:

March 2012

Authors:

Tawat Chanadee, Jessada Wannasin, Niyomwas Sutham

Keywords:

Self-Propagation High-Temperature Synthesis (SHS), Tungsten Based Intermetallic Alloys, WB, WSi₂

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