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Microstructure and physical properties of mechanically alloyed Fe-Mo powder

SYSNO ASEP	0323821
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Microstructure and physical properties of mechanically alloyed Fe-Mo powder
Title	Mikrostruktura a fyzikální vlastnosti mechanicky legovaných Fe-Mo prášků
Author(s)	Jirásková, Yvonna (UFM-A)_{RID, ORCID} Zábranský, Karel (UFM-A) Turek, Ilja (UFM-A)_{RID, ORCID} Buršík, Jiří (UFM-A)_{RID, ORCID} Jančík, D. (CZ)
Source Title	Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388 Roč. 477, - (2009), s. 55-61
Number of pages	7 s.
Language	eng - English
Country	NL - Netherlands
Keywords	Nanostructured materials ; Mechanical alloying ; Microstructure ; Magnetic measurements ; Mössbauer spectroscopy
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA202/05/2111 GA ČR - Czech Science Foundation (CSF)
	GD106/05/H008 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
DOI	10.1016/j.jallcom.2008.11.006
Annotation	Solid state reactions in Fe74Mo26 powder mixture induced by mechanical alloying (MA) are followed by 57Fe Mössbauer spectroscopy supported by additional experimental methods. It is established that a bcc-Fe(Mo) solid solution with an enhanced Mo content substantially exceeding the equilibrium solubility limit, a bcc-Mo(Fe) solid solution, and an amorphous and/or highly defected phase have been formed during the MA. The mean particle size of 100 nm is obtained at the end of milling process. Surface regions of the particles are formed by the amorphous phase containing also iron grains smaller than 20 nm, as proved by transmission electron microscopy and selective area electron diffraction. A varying composition of FeMo powder samples and grain refinement are reflected in changes of hyperfine interactions and macroscopic magnetic characteristics.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2009

Number of the records: 1