ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Elemental powder mixtures of Fe and Si were mechanically alloyed with a ball-mill.Mössbauer spectroscopy and X-ray diffraction were used to characterise the microstructuralchanges of these mixtures which are induced by high-energy ball-milling. Mössbauer spectra arediscussed in terms of two main spectral components (corresponding to FeSi alloy and α-Fe) and thetime dependence of the alloy formation follows a Johnson-Mehl type law. Calorimetrymeasurements show that the formed alloy is stable up to 800ºC as no crystallisation or phasetransformation peaks are observed. From X-ray diffraction, a crystallite size of 9 nm is obtained.Magnetic measurements at low temperature were carried out on the final alloy and the saturationmagnetic moment at 4.2K is 0.44 μB/Fe
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.514-516.1265.pdf
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