New highly magnetic and oxidation-resistant FeCo-based alloys

被引:11
作者
May, JE
de Oliveira, MF
Kuri, SE
机构
[1] Univ Fed Sao Carlos, BR-13560905 Sao Carlos, SP, Brazil
[2] Univ Sao Francisco, BR-13560905 Sao Carlos, SP, Brazil
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 361卷 / 1-2期
基金
巴西圣保罗研究基金会;
关键词
corrosion; magnetic flux density; FINEMET; NANOPERM; HITPERM;
D O I
10.1016/S0921-5093(03)00525-2
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A new type of amorphous and nanocrystalline alloys has recently been produced and called HITPERM. These alloys are FeCo-based and their soft magnetic properties persist to alpha-gamma phase transformation at 980degreesC. Their soft magnetic properties are attributed to alpha'-FeCo phase formation during the crystallization process. The FeCo-based alloys (HITPERM) present superior magnetic flux density and permeability when compared to Fe-based alloys (FINEMET and NANOPERM). Because these alloys are potentially applicable in components working at high temperatures, their oxidation behavior and magnetic properties require careful analysis. This work present a magnetic property and oxidation resistance comparison of one traditional FeCo-based alloy and one traditional Fe-based alloy: Fe38.5Co38.5Nb7Cu1B15 (HITPERM) and Fe73Nb3Si13.5B9.5Cu1 (FINEMET); other with Si addition: Fe36Co36Nb6Cu1Si10B11; other with Cu suppression: Fe36Co36Nb7Si10B11 and a new one composition with highly magnetic and oxidation resistance: Fe33.5Co33.5Nb7Si15B11. (C) 2003 Elsevier B.V. All rights reserved.
引用
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页码:179 / 184
页数:6
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