Zirconium self-propagating synthesis

Abstract. Pulse electric current sintering (PECS) is applied to synthesis MsSis type Si-Ti-Zr system intermetallic compounds, SisTixZr(5-x) x=0-5, directly from raw powders of silicon, titanium and zirconium. Almost full conversion to SisTixZr(5-x) are achieved by PECS method with self-propagating high temperature synthesis (SHS) reaction. The adiabatic temperatures are susceptible to sintering behaviors such as vacuum pressure in chamber and displacement of pressure axis on the PECS process. The large quantities of gases are released in Zr- rich samples. The bulk shapes with almost dense samples are obtained at Ti-rich samples. 

DD Radev, M Marinov. Properties of titanium and zirconium diborides obtained by self-propagated high-temperature synthesis. J Alloys Compos 244 48, 1996. 

IM Low. Self-propagating high-temperature synthesis of zirconium diboride ceramics. J Mater Sci Lett 11 715, 1992. 

Feng, H. J., Moore, J. J., Wirth, D. G. (1992). Combustion Synthesis of Ceramic-Metal Composite Materials The Zirconium Diboride-Alumina-Aluminum System. International Journal of Self-Propagating High-Temperature Synthesis, 1,228-238. 

Mishra, S. K., Das, S., Pathak, L. C. (2004). Defect structures in zirconium diboride powder prepared by self-propagating high-temperature synthesis. Materials Science and Engineering A, 364, 249-255. doi 10.1016/j.msea.2003.08.021. 

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