Effect of Nb Addition on the Glass-forming Ability, Soft-magnetic Properties and Mechanical Properties of CoFeNiBSiNb Bulk Glassy Alloys
The effect of Nb addition on the glass-forming ability (GFA),soft-magnetic properties and mechanical properties of (Co0.65Fe0.35)0.9Ni0.173-xB21.9Si5.1Nbx (x=3–6) alloy system were investigated.The results showed that by adjusting the content of Nb,the thermal stability of the supercooled liquid and the GFA increased effectively.With increasing the amount of Nb,the supercooled liquid region (ΔTx) increased from 45 to 65 K and the reduced glass transition temperature (Trg=Tg/Tl) was located in the range of 0.584–0.644.As a result,the (Co0.65Fe0.35)0.9Ni0.173-xB21.9Si5.1Nbx bulk glassy alloys (BGAs) with diameters up to 5.0 mm were produced by copper mold casting.In addition to the high GFA,the Co-based glassy alloys exhibited excellent soft-magnetic properties,i.e.,saturation magnetization of 0.53–0.81 T,low coercive force of 0.51–1.75 A/m,and high effective permeability of (1.52–2.53)×104 at 1 kHz under a field of 1 A/m.Besides,the Co-based BGAs also exhibited super high fracture strength of 4270–4490 MPa and vickers hardness of 1127–1182.
Supercooled liquid region Glass-forming ability Soft-magnetic properties Mechanical property
Yaqiang Dong Qikui Man Baolong Shen
Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences. Ningbo, 315201, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
815-822
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）