Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Effect of Al on Bulk Amorphization and Magnetic Properties of FeSnPSiB Alloys
Chih-Yuan LinTsung-Shune ChinChih-Kang ChaoSiao-Xion ZhouZhih-Chao LuLi WangFei-Fei ChenMing-Xiang PanWei-Hua Wang
Author information

2004 Volume 45 Issue 3 Pages 888-892


Structure and magnetic properties of melt-spun multi-component Fe78−xAlxSn2P12 Si4B4 (x = 0, 3, 4, 5 at%) amorphous ribbons and copper-mold-cast rods were investigated. The improvement of thermal stability was recognized with the replacement of Fe by 3∼5 at% Al in these Sn-containing alloys. The super-cooled liquid region (ΔTx), defined by (TxTg) where Tx is the crystallization temperature and Tg the glass transition temperature, increases from 46.5 K as x = 3 to the maximum value 50.2 K as x = 4. With increasing Al content, magnetic properties of annealed Fe78−xAlxSn2P12Si4B4 (x = 3∼5 at%) amorphous ribbons are: saturation magnetization decreases from 1.22 to 1.18 T; coercive force decreases from 3.3 to 2.2 A/m, maximum permeability increases from 137000 to 208000, Curie temperature lowers from 591.1 K to 578.3 K; the electrical resistivity increases from 175 to 188 μΩ-cm; and core loss is about 0.14 W/kg (50 Hz, 1.1 T external magnetic field). Bulk amorphous rods with 1 mm diameter were successfully demonstrated for the composition Fe74Al4Sn2P12Si4B4 by a copper mold casting method. Due to the combination of good glass forming ability and superior soft magnetic properties, these alloys will find potential applications in industries.

Information related to the author
© 2004 The Japan Institute of Metals and Materials
Previous article Next article