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