摘要
研究了460—580℃等温退火（30min）后纳米晶（Fe0.5Co0．5）73．5Cu1Mo3Si13．5B9合金高温软磁性能。结果表明，在Fe73.5Cu1Mo3Si13.5B9纳米晶合金中用Co取代部分Fe仍可形成双相纳米晶结构，并且可显著提高合金的高温特性。与Fe73.5Cu1Mo3Si13.5B9纳米晶软磁合金相比，其室温μi略有下降，但表征高温磁稳定性的居里温度明显提高，同时磁导率在高温下衰减变缓，从而拓宽了纳米晶软磁材料的高温使用范围。文中初步探讨了用Co取代部分Fe后使高温特性得到改善的机理。
The high- temperature soft magnetic properties were investigated for nanocrystalline （Fe0.5Co0.5）73.5Cu1Mo3Si13.5B9 alloy annealed at 460-580℃. The results show that by substituting partially in Fe73.5 Cu1 Mo3 Si13.5 B9 alloy, a dual - phase nanocrystalline microstructure composed of α -Fe- Co（Si） and residual amorphous phase is formed and the high -temperature soft magnetic properties are improved significantly. Compared with nanocrystalline Fe73.5 Cu1 Mo3 Si13.5 B9 soft magnetic alloy, the Curie temperature that represents magnetic stabilization for （ Fe0. 5 Co0. 5 ） 73.5 Cu1 Mo3 Si13.5 B9 alloy is enhanced remarkably. Although the initial permeability μi of the new alloy at room temperature is decreased somewhat than that of Fe73.5 Cu1 Mo3Si13.5B9 alloy, however, the μi at high- temperature is much more stable up to 450℃. Therefore a potential application as high temperature soft magnetic materials for this alloy is expected. The mechanism that the high - temperature soft magnetic properties can be improved by partially replacing Fe with Co in Fe73.5Cu1Mo3Si13 5B9 alloy was also discussed.
出处
《功能材料与器件学报》
EI
CAS
CSCD
北大核心
2006年第3期169-172,共4页
Journal of Functional Materials and Devices
基金
国家自然科学基金资助项目(No.50271047)
天津市自然科学基金资助项目(No.003601811)
关键词
纳米晶合金
交换耦合
居里温度
高温磁性
nanocrystalline alloy
exchange coupling
Curie temperature
high - temperature magnetic properties.
