CAJ | 학술논문

采用单辊快淬法制备(Co0．942 Fe0．058)71－x Si6．4 B22．6 Mox (x ＝0~5)非晶微带.合金微带的玻璃转化温度(T g )随着 Mo 含量的增加由805 K 单调升高至832 K；Mo 含量为 x ＝5时,过冷液相区ΔT x 达最大值,表明添加 Mo 提高了该体系合金的非晶形成能力.饱和磁化强度(M s )随 Mo 含量的增加而减小,但在Mo 元素含量 x ＝2时,矫顽力(H c )值最小,有效磁导率(μe )最大.磁学性能测试结果显示,与常规热处理相比,磁场热处理对微带软磁性能改善更加明显.经过纵向磁场热处理,(Co0．942 Fe0．058)69 Si6．4 B22．6 Mo2非晶微带饱和磁化强度和有效磁导率分别达到80．99 A??m2/kg 和12510,与制备态相比,分别增加40．15％和65．52％；而矫顽力为0．64 A/m,减小48．39％.在驱动频率为43 kHz 时,以(Co0．942 Fe0．058)69 Si6．4 B22．6 Mo2为磁芯的 MI 磁敏感元件,对磁场灵敏度最大为136％/(A??m－1),对弱磁场响应灵敏.
채용단곤쾌쉬법제비(Co0．942 Fe0．058)71－x Si6．4 B22．6 Mox (x ＝0~5)비정미대.합금미대적파리전화온도(T g )수착 Mo 함량적증가유805 K 단조승고지832 K；Mo 함량위 x ＝5시,과랭액상구ΔT x 체최대치,표명첨가 Mo 제고료해체계합금적비정형성능력.포화자화강도(M s )수 Mo 함량적증가이감소,단재Mo 원소함량 x ＝2시,교완력(H c )치최소,유효자도솔(μe )최대.자학성능측시결과현시,여상규열처리상비,자장열처리대미대연자성능개선경가명현.경과종향자장열처리,(Co0．942 Fe0．058)69 Si6．4 B22．6 Mo2비정미대포화자화강도화유효자도솔분별체도80．99 A??m2/kg 화12510,여제비태상비,분별증가40．15％화65．52％；이교완력위0．64 A/m,감소48．39％.재구동빈솔위43 kHz 시,이(Co0．942 Fe0．058)69 Si6．4 B22．6 Mo2위자심적 MI 자민감원건,대자장령민도최대위136％/(A??m－1),대약자장향응령민.
(Co0.942 Fe0.05 8 )7 1 -x Si6 .4 B22 .6 Mox (x =0-5)amorphous ribbons were fabricated by a single roller quench-ing method.The experimental results showed that with the increase of Mo amount,glass transition temperature (T g )increases and supercooled liquid region (ΔT x )reaches the maximum value of 42 K with 5at% Mo,dem-onstrating the addition of Mo can improve the glass forming ability.The saturation magnetization decreases monotonely with the increase of Mo amount,and with 2at% Mo addition the as-quenched amorphous ribbon ex-hibits the lowest coercive force and the highest effective permeability.Magnetothermal treatment was more ef-fective on improving the soft magnetic properties compared with the conventional heat treatment.The satura-tion magnetization and effective permeability of the ribbon annealed in the longitudinal magnetic field increase by 40.15% to 80.99 A??m2/kg and by 65.52% to 12 5 10,respectively,while the coercive force decreases by 48. 39% to 0.64 A/m compared with those of the as-quenched ribbon.The results also showed that the highest sen-sitivity of MI elements with (Co0.942 Fe0.05 8 )6 9 Si6 .4 B22 .6 Mo2 ribbons as core materials was 136%/(A??m-1 )at a driven current frequency of 43 kHz when the ribbons were annealed in longitudinal magnetic field.