Influence of Ar Pressure on Product Characteristics of Self-Propagating High-Temperature Synthesis from WO3/B2O3/Al Reactant System

Tawat Chanadee; Jessada Wannasin; Niyomwas Sutham

doi:10.4028/www.scientific.net/AMR.748.32

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Influence of Ar Pressure on Product Characteristics of Self-Propagating High-Temperature Synthesis from WO₃/B₂O₃/Al Reactant System

Abstract:

nfluence of Ar gas pressure on the SHS reaction products from WO₃/B₂O₃/Al system has been investigated. The pressure of Ar gas has a significant effect on the phase separation and microstructures of SHS products. Increase in Ar gas pressure has a effect on the phase compositions of SHS products and results in the increase of the amount of W₂B. Furthermore, the crystalize sizes of W₂B increase with the increase of Ar gas pressure from 0.3 to 0.5 MPa, respectively.