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http://dx.doi.org/10.3740/MRSK.2003.13.9.561

Determination of the Degree of Alloying by Detection of Residual Ferromagnetic Elements for Intermetallic Alloys Processed by Mechanical Alloying  

Ur, Soon-Chul (Dept. of Materials Science & Engineering/Nano Technology Lab., Chungju National University)
Publication Information
Korean Journal of Materials Research / v.13, no.9, 2003 , pp. 561-566 More about this Journal
Abstract
Mechanical alloying(MA) process using elemental powders followed by hot pressing has been applied to some intermetallic alloy system containing ferromagnetic elements, such as NiAl and $FeSi_2$. A modified thermogravimetric analysis (TGA) technique was used to investigate the degree of alloying in milled powders and hot consolidated specimens as well as heat-treated bulk specimens. It is shown that the measurement of Curie temperatures in MA intermetallic powders and consolidated specimens containing ferromagnetic components, when determined as a function of milling and heat treatment parameters, can give some insight into the progress and mechanism of alloying.
Keywords
mechanical alloying; TGA; degree of alloying; intermetallics;
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