退火对Fe-47%wt Ni合金超细微粒压结体高频特性的影响  

Influence of Annealing on the High Frequency Characteristic of the Pressing Bulk for Fe 47%wt Ni Alloy Ultrafine Particles

作　　者：朱骏[1,2] 陈允鸿[1,2] 王锦辉[1,2] 冯宜信[1,2] 

机构地区：[1]扬州大学师范学院物理系 [2]扬州大学工学院物理系

出　　处：《功能材料》1997年第4期441-443,共3页Journal of Functional Materials

摘　　要：用蒸发冷凝法制备了不同平均粒径的Ｆｅ－４７％ｗｔＮｉ合金超细微粒。结果表明：对成形压强相同的压结体样品，退火后，高频特性变坏，平均粒径越大越明显；对平均粒径相同的样品，退火后，高频特性与成形压强密切相关，可归因于，成形压强不同，致使压结体的结构及应力不同。选择适当的平均粒径、成形压强和退火温度，可得到高频特性优良的压结体。Fe 47%wt Ni alloy ultrafine particles with various average size are prepared by the evaporation condensation method.It is shown that under the same forming pressure,after annealing,the high frequency characterisitcs of the pressing bulk worsen with the average size, and that for samples with the same average size there arises a close relationship between the high frepuency characteristic and forming pressure. It is because the change in forming pressure will result in variation of structure and stress in the pressing bulk. The proper selection of average size, forming pressure and annealing temperature can produce pressing bulk with superior high frequency characteristic.

关 键 词：超细微粒 压结体 退火 高频特性 软磁合金 

分 类 号：TG132.271[一般工业技术—材料科学与工程]