【摘要】 研究了在不同温度（３７０～６６０℃）退火后Ｆｅ_８３Ｎｂ_６Ｂ_１１合金的初始磁导率灼与温度Ｔ的关系．结果表明，退火温度Ｔ_ａ对μ＿ｉ～Ｔ曲线的形状有较大的影响．Ｔ_ａ＝３７０℃，μ～Ｔ曲线出现尖锐的 Ｈｏｐｋｉｎｓｏｎ峰； Ｔ＿ａ＝４２０℃时，μ＿ｉ～Ｔ曲线尖锐的 Ｈｏｐｋｉｎｓｏｎ峰消失，但温度高于非晶居里温度时，μ＿ｉ迅速下降；Ｔ_ａ在４６０～６６０℃的范围内，μ_ｉ随着Ｔａ升高先以一定的斜率直线下降，降到非晶相的居里点后缓慢下降．分析了这三种类型的μ_ｉ～Ｔ曲线对应的合金相结构、讨论μ_ｉ随Ｔ变化的原因及双相纳米晶合金中晶体相体积分数、剩余非晶相的磁特性及晶粒间的磁耦合作用对μ_ｉ～Ｔ曲线形状的影响更多还原

【Abstract】 The correlation between initial permeability μ_i and temperature T for Fe₈₃Nb₆B₁₁ alloy annealed at 37O～66O℃ was investigated. The results showed that the annealing temperature has obvious effect on μ_i～ T curve. Three types of μ_i～T curve were observed. The phase structures of the alloys corresponding to the three types of μ_i～ T curve were analyzed and the mechanisms for changes of μ_i with T as well as the influence of the volume fraction of α-Fe phase, the characteristic of residual amorphous phase and the magnetic coupling among α-Fe grains on μ_i～T curve were also discussed.更多还原