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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 2    April 2002

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Effect of particle size of iron on
 reaction velocity of combustion
synthesis of Ti-C-Fe system
FAN Qun-cheng(范群成), CHAI Hui-fen(柴惠芬), JIN Zhi-hao(金志浩)

State Key Laboratory for Mechanical Behavior of Materials, 
Xi′an Jiaotong University, Xi′an 710049, China

Abstract:Four Ti-C-Fe powder mixtures, with a same molar ratio but different particle sizes of Fe and Ti, were used to measure the reaction velocity of the combustion synthesis. The results show that in the case of the finer Ti powder used, the re action velocity of mixture with the finer Fe powder is higher than that with the coarser Fe powder. However, in the case of the coarser Ti powder used, the reaction velocity of mixture with the finer Fe powder is lower than that with the coarser Fe powder. The effect of particle size of Fe powder on reaction velocity can be explained with the previously proposed mechanisms of the combustion synthesis of Ti-C-Fe system.

 

Key words: Ti-C-Fe; combustion synthesis; reaction velocity

ISSN 1672-7029
CN 43-1423/U

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