摘要
研究了在不同温度（３７０～６６０℃）退火后Ｆｅ_（８３）Ｎｂ_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。
The correlation between initial permeability μi and temperature T for Fe83Nb6B11 alloy annealed at 370-660°C was investigated. The results show that the annealing temperature has obvious effect on μi-T curve. Three types of μi-T curve were observed. The phase structures of the alloys corresponding to the three types of μi-T curve were analyzed and the mechanisms for changes of μi with T as well as the influence of the volume fraction of α-Fe grains on μi-T curve were also discussed.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2001年第5期530-534,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金59871013
中国博士后科学基金
天津教委科技发展基金
教育部骨干教师资助计划资助项目.
