Effect of Si on the glass-forming ability, thermal stability and magnetic properties of Fe–Co–Zr–Mo–W–B alloys
Effect of Si on the glass-forming ability, thermal stability and magnetic properties of Fe–Co–Zr–Mo–W–B alloys
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DOI：
10.1016/j.jallcom.2007.05.009
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发表时间：
2008-07
影响因子：
6.2
通讯作者：
Weimin Wang;A. Gebert;S. Roth;U. Kuehn;L. Schultz
中科院分区：
文献类型：
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作者：
Weimin Wang;A. Gebert;S. Roth;U. Kuehn;L. Schultz
本文研究了Si对采用熔体快淬法、注射铸造法和离心铸造法制备的Fe-Co-Zr-Mo-W-B合金（第一组：Fe 60 Co 8 Zr 10 Mo 5 W2 B15 −xSix，1≤x≤4;第二组：Fe 60 Co 8 Zr 10 − xMo 5 W2 B15 Six，0≤x≤4;第三组：Fe 60 Co 8 Zr 8 Mo 5 W2 B17 −xSix，0≤x≤2）的非晶形成能力、热稳定性和磁性能的影响。结果表明，第Ⅰ组合金的非晶形成能力比第Ⅱ组合金差，而第Ⅲ组合金可浇铸成直径为1- 3 mm的棒材，其XRD图谱中无结晶反射。对于非晶带和非晶棒，最近邻距离r1随Si含量cSi的增加呈非单调变化，与玻璃化转变温度Tg和晶化温度Tx的变化规律平行，而与室温磁化强度MRT和居里温度Tc的变化规律相反。这种相关性可以解释的结构模型，假定铁原子同时出现在两种类型的局部结构中的非晶样品。
This paper presents investigations on the effect of Si on the glass-forming ability, thermal stability and magnetic properties of the Fe–Co–Zr–Mo–W–B samples (group I: Fe60Co8Zr10Mo5W2B15−xSix, 1≤x≤4; group II: Fe60Co8Zr10−xMo5W2B15Six, 0≤x≤4; group III: Fe60Co8Zr8Mo5W2B17−xSix, 0≤x≤2) prepared by melt spinning, injection casting, and centrifugal casting methods. It is found that the glass-forming ability (GFA) of the alloys in group I is more deteriorated than that in group II, and that the alloys in group III can be cast into the rods of 1–3mm diameter without crystalline reflections in their XRD patterns. For the amorphous ribbons and rods, a non-monotonic change of the nearest neighbour distance r1with increasing Si content cSiwas detected, which is parallel to that of the glass transition and crystallization temperatures Tgand Tx, but opposite to that of the magnetization at room temperature MRTand the Curie temperature Tc. This correlation can be interpreted by a structure model presuming that iron atoms appear simultaneously in two types of local structures in the amorphous samples.