Investigation on Combustion Synthesis and Reaction Process of Al-Ti-TiO2 System

Journal of Inorganic Materials

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Investigation on Combustion Synthesis and Reaction Process of Al-Ti-TiO₂ System

LI Zhi-Qiang; QU Wei; HAN Jie-Cai; HE Xiao-Dong

Center for Composite Materials; Harbin Institute of Technology; Harbin 150001; China

Received:2001-03-16 Revised:2001-04-09 Published:2002-03-20 Online:2002-03-20

Abstract

Abstract: TiAl base composites reinforced by submicron Al₂O₃ particles were produced by Self-propagating High-temperature Synthesis (SHS) in use of the exothermic reaction of Al-Ti-TiO₂ system. The reaction process was investigated with phase analysis of DTA samples quenched at different temperatures. The results indicate that the thermite reduction of TiO₂ involves several transitional stages and its initiatory temperature is lowered by prior reactions between Al and Ti, Ti and TiO₂.

Key words: SHS, Al-Ti-TiO₂ system, composites

CLC Number:

TB39

LI Zhi-Qiang,QU Wei,HAN Jie-Cai,HE Xiao-Dong. Investigation on Combustion Synthesis and Reaction Process of Al-Ti-TiO₂ System[J]. Journal of Inorganic Materials.

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Investigation on Combustion Synthesis and Reaction Process of Al-Ti-TiO₂ System

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