Structure and Magnetic Properties of Fe_(60)Ni_(20)C_(20) Alloying Powder During Mechanical Alloying Process

In this article,Fe_(60)Ni_(20)C_(20) amorphous alloy powder is made by mechanical alloying. The structures and magnetic properties of samples with different milling times are investigated. X-ray diffraction analysis results show that the structures of samples are changed during different milling times. With part of the crystal material being changed to amorphous material, the αFe (bcc) begins to transform to γFe (fcc) structure and new phase of Fe_ 3 C is formed when the ball milling time is 20 h. The crystal grain sizes of samples became smaller from 37.17 nm to 2.69 nm with the extension of ball milling time. The achievements of VSM suggest that the coercive force of the samples increases at the initial period of the ball milling process and decreases after being milled ball 20 h with part of the crystal material being changed to amorphous material. The coercive force of the samples is smallest and soft magnetic properties are best when the ball milling time is 100 h. The results mentioned above are discussed in this article.