摘要
采用Ｘ射线衍射、电子衍射及透射电子显微技术研究了Ｆｅ７３．５Ｃｕ１Ｍｏ３Ｓｉ１３．５Ｂ９非晶合金４１００Ｃ预退火对随后４８００Ｃ退火所形成的纳米晶结构的影响。结果表明，预退火对Ｆｅ７３．５Ｃｕ１Ｍｏ３Ｓｉ１３．５Ｂ９合金纳米晶结构的形成有重要影响。当预退火时间从０小时增加至３小时，合金在４８００Ｃ、１小时退火形成的晶化相αＦｅ（Ｓｉ）的晶粒尺寸从１５ｎｍ减小至８ｎｍ。预退火使αＦｅ（Ｓｉ）相的形核数量及体积分数增加。将Ｆｅ７３．５Ｃｕ１Ｍｏ３Ｓｉ１３．５Ｂ９非晶合金在４３００Ｃ预退火４小时，然后在５１００Ｃ退火１０分钟，制备出了晶粒尺寸为１０ｎｍ的纳米晶Ｆｅ７３．５Ｃｕ１Ｍｏ３Ｓｉ１３．５Ｂ９合金，它具有最高起始磁导率（９．８×１０４）。
The influence of preannealing (410 0C, 1-3h) of amorphous Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy on the formation of nanocrystalline structure in the alloy annealed at 480 0C has been investigated by X-ray diffraction, electron diffraction, and transmission electron microscopy. Experimental results show that the preannealing has an obvious effect on the formation of nanocrystalline Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy. The grain size of α-Fe(Si) crystalline phase in the Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy annealed at 480 0C for one hour decreases from 15nm to 8nm with increasing preannealing time to 3 hours. The nucleation rate and volume fraction of α-Fe(Si) phase increase with preannealing amorphous Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy at 410 0C. The nanocrystalline Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy with a maximum initial permeability of 9.8×10 4 has been prepared by preannealing amorphous Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy at 430 0C for four hours and then annealing the alloy at 510 0C for ten minutes.
出处
《功能材料与器件学报》
CAS
CSCD
1998年第4期257-262,共6页
Journal of Functional Materials and Devices
基金
河北省自然科学基金
关键词
预退火
软磁材料
纳米晶合金
Preannealing, Nanocrystalline materials,Fe 73.5 Cu 1Mo 3Si 13.5 B 9 alloy
