ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 27    No. 6    June 2017

Influence of B on thermal stability, soft magnetic properties and electrical resistivity of Fe94-xNb6Bx glassy alloys
FA Yang, ZHU Man, TAO Peng, NAN Rui-hua, JIN Chang-qing, JIAN Zeng-yun, CHANG Fang-e
(School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China)
Abstract: Fe94-xNb6Bx (x=13, 15, 17) (mole fraction, x%) amorphous alloys were prepared by melt-spinning. The influence of B content on thermal stability, soft magnetic properties and electrical resistivity was investigated by X-ray diffractometry (XRD), differential scanning calorimetry (DSC), vibrating sample magnetometry (VSM) and four-point probe. DSC results indicate that the Fe94-xNb6Bx glassy alloys undergo two-stage crystallization events. The Fe77Nb6B17 glassy alloy exhibits high thermal stability and excellent glass forming ability, in which onset crystallization temperature (Tx1) is 864 K, and supercooled liquid region (ΔTx), Trg, γ are 48 K, 0.524, and 0.359, respectively. The saturation magnetization and electrical resistivity of the Fe94-xNb6Bx glassy alloys are 80-108 A?m2/kg and 122-133 μΩ?cm, respectively. With increasing the B content in the Fe94-xNb6Bx glassy alloys, the glass forming ability and electrical resistivity increase, while the soft magnetic properties firstly increase and then decrease. These newly developed Fe-based glassy alloys can be used as a functional material due to their high glass forming ability, excellent soft magnetic properties and good electrical resistivity.
Key words: Fe-based glassy alloy; melt spinning; glass forming ability; soft magnetic properties; electrical resistivity
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)