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利用铜辊甩带法制备出名义成分为Nd60-xCexFe30Al10(x=0,10,20,30,60)合金条带样品。用X射线衍射仪(XRD)、示差扫描量热仪(DSC)、振动样品磁量计(VSM)测试条带样品的相组成、非晶形成能力和磁性能。XRD结果表明所制备的条带样品基本为非晶结构。DSC研究结果表明,当x=0,10时,样品未出现明显的玻璃转变,而当x=20,30,60时,样品出现了极低的玻璃转变温度Tg,分别为369 K,366 K,365 K,在整个Ce取代Nd的过程中,样品的晶化温度(Tx1,Tx)也随着x的增加而减小。当x≥20时,样品非晶形成能力(ΔTx=Tx1-Tg)随Ce含量增大而减小,其中当x=20时,ΔTx有最大值90 K。VSM结果显示,样品的饱和磁化强度Ms、剩余磁化强度Mr和矫顽力Hc均随Ce含量增加而近似成线性减小,条带样品的铁磁性减弱,Ce60Fe30Al10呈现完全的室温顺磁性。
A sample of Nd60-xCexFe30Al10 (x = 0, 10, 20, 30, 60) alloy strip with nominal composition was prepared by copper roll rejection method. The phase composition, amorphous formability and magnetic properties of the ribbon samples were measured by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and vibrating sample magnetometer (VSM). XRD results show that the prepared strip samples are basically amorphous structure. The DSC results show that there is no obvious glass transition at x = 0 and 10, and when x = 20, 30 and 60, the glass exhibits extremely low Tg (369 K, 366 K , 365 K, the crystallization temperature of the sample (Tx1, Tx) also decreases with the increase of x during the whole Ce substitution of Nd. When x≥20, the amorphous formability (ΔTx = Tx1-Tg) decreases with the increase of Ce content, and ΔTx has a maximum value of 90K when x = 20. The results of VSM show that the saturation magnetization Ms, remanent magnetization Mr and coercivity Hc of the samples decrease linearly with the increase of Ce content, while the ferromagnetism of strip samples decreases, and the paramagnetic properties of Ce60Fe30Al10 show completely at room temperature.