摘要
透射电镜和穆斯堡尔谱研究表明，合金经823K×0．5h真空退火，形成由平均晶粒尺寸17nm左右的a－Fe（Si）相（－76．7％）和残余非晶（－23．3％）组成的显微结构，合金的磁感应强度B30为1．40T，f＝1kHz时最大有效磁导率（μe）为96×10－3H／m，P0.5／20K≤137kW／m3，P0.5／50k＜590kW／m3，矫顽力Hc=1．0A／m，合金具有明显的磁场处理效果。
The examinations of TEM and Mossbauer spectroscopy showed that a microstructure of the bee type aFeSi with about 17 nm in average grain size and about 76.7% in volume fraction coexisting with the residual amorphous phase was formed after the nanocrystalline alloy was annealed at 823 K for 0.5 Hr.in the vacuum tube fumace.The new alloy showes an obvious effect of field annealing,some technical parameters are as follows: the B30 1.40T; the highest Value of initial permeability at 1 kH(μe) 96 ×10-3 H/m; P0.5/20k≤137kW/m3, P0.5/50K<590kW/m3 at different frequencies;and the coercivity (Hc)about 1.0A/m.
出处
《上海金属》
EI
CAS
1999年第1期3-6,38,共5页
Shanghai Metals
基金
上海市青年科技启明星计划资助
关键词
纳米晶合金
磁感应强度
低损耗
磁导率
Nanocrystalline Alloy, High Saturation Flux Density, Low Iron Loss
