Sn对多元Fe基非晶合金的玻璃形成能力及磁性能的影响

Effects of Sn on Glass Forming Ability(GFA) and Magnetic Performance of Multi-component Fe-based Amorphous Alloys

研究分析了Sn元素对Fe-Ni-Al-Ga-P-B-Si-C系非晶合金玻璃形成能力及磁性能的影响。XRD分析表明,合金Fe68-xNi1Al5Ga2P9.65B4.6Si3C6.75Snx(x=0,0.5,1.5,2.5)在铸态下皆为非晶态,并且合金的脆性随着Sn含量的增加急剧增大;DSC分析表明,随着Sn含量的增加,合金的玻璃转变温度Tg逐渐下降,同时过冷液相区ΔTx逐渐变宽,而且增加幅度越来越大。Sn含量为0.5%和1.5%时,第一晶化放热峰Tp1已变得不明显,说明合金由二次晶化向一次晶化转变。当Sn含量为2.5%时,合金具有较好的软磁性能。

Effects of Sn on GFA and magnetic performance of Fe-Ni-Al-Ga-P-B-C-Si series amorphous alloy have been examined by XRD(X-ray diffraction).The results show that as-cast Fe68-xNi1Al5Ga2P9.65B4.6Si3Snx(x=0,0.5,1.5,2.5) alloy is amorphous alloy,and the brittleness of the alloy is sharply deteriorated with the increase of Sn content.DSC analysis reveals that with increasing Sn content,the glass transition temperature of alloy Tg is gradually declined and under-cooling liquid zone is gradually widened with more and more amplitude increase.First crystallized exothermal peak Tp1 is blurred with 0.5% and 1.5% Sn content,which shows that the alloy is changed from secondary crystallization to primary crystallization.The alloy containing 2.5% Sn has better soft magnetic property.