【摘要】 在ｆ＝ １０ —２００００ Ｈｚ 和Ｂｍ ＝ ０－１ —１－０ Ｔ 范围内，测量了高Ｂｒ 纳米晶Ｆｅ７３ ．５Ｃｕ１Ｎｂ３Ｓｉ１３ ．５Ｂ９合金的损耗．把总损耗分离为磁滞损耗、经典涡流损耗和过剩损耗．测量结果表明，每周损耗随频率的变化表现出明显的非线性行为．用Ｂｅｒｔｏｔｔｉ 的损耗统计理论描述了这种非线性行为．大致在两个频率范围内，有两种不同的描述方式．更多还原

【Abstract】 In the ranges of f =10—20000?Hz and B m=0 1—1 0?T,the core loss has been measured for nanocrystalline Fe 73.5 Cu\-1Nb\-3Si 13.5 B\-9 alloy with high B r.The total power loss was decomposed into the sum of the classical eddy current loss,the hysteresis loss and the excess loss.The results show that the change of the total loss per cycle with frequency clearly shows a nonlinear behavior,which has been described in terms of Bertotti’s statistical theory of loss.The frequency range examined can nearly be divided into two intervals,in which there exist two different describing ways.更多还原