The formation of ternary compound Fe3Mo3C by ball milling

Authors

L M. Di, Australian National University
Andrzej Calka, University of WollongongFollow
Z L. Li, Australian National UniversityFollow
J S. Williams, Australian National University

RIS ID

21860

Publication Details

Di, L. M., Calka, A., Li, Z. L. & Williams, J. S. (1995). The formation of ternary compound Fe3Mo3C by ball milling. Journal of Applied Physics, 78 (6), 4118-4122.

Abstract

Ball milling of Mo in nitrogen and ammonia gases has been studied. After heating, the formation of an intriguing ternary compound, Fe₃Mo₃C_1−x , was observed as a result of Fe (and C) contamination from the milling apparatus. For a comparison, mechanical alloying of Fe–Mo–C powders with a stoichiometric composition of Fe₃Mo₃C was also performed and again an Fe–Mo–C alloy was obtained after milling.Thermal analysis shows a single transition peak for the formation of both the Fe₃Mo₃C phase in the latter case and also for Fe₃Mo₃C_1−x formed as a result of contamination from the mill. The lattice parameter for the Fe₃Mo₃C_1−x phase obtained by Mo‐gas reaction is smaller than for the Fe₃Mo₃C phase obtained by mechanical alloying of stoichiometric Fe–Mo–C powders. It is suggested that, in the Fe₃Mo₃C_1−x phase produced by milling of Mo in gases, a high concentration of C vacancies exists.