【摘要】：本文采用真空非自耗式電弧爐在高純氬保護(hù)下熔煉制備合金鑄錠,使用單銅輥甩帶法制備了FeCoNiSiB系非晶合金帶材,并對帶材進(jìn)行了熱處理,通過x射線衍射儀(XRD)、差式掃描量熱議(DSC)、振動(dòng)樣品磁強(qiáng)計(jì)(VSM)以及軟磁直流測試儀對帶材的微觀結(jié)構(gòu)和磁性能進(jìn)行表征和測試。通過微合金化技術(shù),研究了微量Si、Ni、B對FeCoNiSiB合金的非晶形成能力和軟磁性能的變化規(guī)律。主要得到了以下結(jié)果：1)在Fe40Ni38Mo4B(18-x)Six合金帶材中,當(dāng)x=0,2,4,6,8,10時(shí)均能形成非晶,且隨著Si元素的添加,合金帶材的矯頑力Hc先減小后增大,并在x=4時(shí)最小為5.8A/m。2)Fe40Ni38Mo4814Si4合金帶材在405℃×10min熱處理后獲得較高的飽和磁化強(qiáng)度Ms為112.6emu/g,在345℃×10min熱處理后獲得較低的Hc為7.0A/m。3)淬火態(tài)(Feo.39Co0.15Ni0.46)94-yBySi6合金帶材,在y=12,14,16,18時(shí)均能形成非晶；B元素的添加提高的(Fe0.39Co0.15Nio.46)94-yBySi6合金帶材的一級(jí)起始晶化溫度,但降低了兩級(jí)起始晶化溫度之間的差值△Tx;在y=14%時(shí)非晶合金的飽和磁化強(qiáng)度Ms達(dá)到最大值,為94.6emu/g；在y=12時(shí)非晶合金的矯頑力Hc達(dá)到最小值,為10.1A/m。4)(Fe0.39Co0.15Ni0.46)80B14Si6非晶合金帶材在465℃×10min退火后,樣品的比飽和磁化強(qiáng)度Ms達(dá)到最大值為99.2emu/g；而矯頑力Hc在425℃×10min退火后達(dá)到最小值,為5.9A/m。5)淬火態(tài)(Fe0.39Co0.5Ni0.11)80B20-zSiZ合金帶材,在z=2,4,6,8時(shí)均能形成非晶；隨著Si含量的增加,合金帶材的一級(jí)起始晶化溫度Tx1和二級(jí)起始晶化溫度Tx2都是先升高后降低；當(dāng)z=8%時(shí),淬火態(tài)合金帶材的比飽和磁化強(qiáng)度Ms達(dá)到最大值,為147.7emu/g當(dāng)z=2%時(shí),淬火態(tài)合金帶材的矯頑力Hc達(dá)到最小值,為12.2A/m。6)將(Feo.39Co0.5Ni0.11)80B12Si8合金帶材保溫退火后發(fā)現(xiàn),在430℃之前,合金帶材的比飽和磁化強(qiáng)度Ms和矯頑力Hc變化不大,比飽和磁化強(qiáng)度Ms為132.8emu/g.在430℃×10min退火后,矯頑力Hc達(dá)到最小值,為12.4A/m。
[Abstract]:In this paper, the alloy ingot was prepared by vacuum non-consumable arc furnace melting under the protection of high purity argon, and the FeCoNiSiB amorphous alloy strip was prepared by single copper roll casting method, and the strip was heat-treated. X-ray diffractometer (XRD), differential scanning calorimetry (DSC), vibrating sample magnetometer (VSM) and soft magnetic DC tester were used to characterize and test the microstructure and magnetic properties of the strip. The changes of amorphous forming ability and soft magnetic properties of FeCoNiSiB alloy were studied by microalloying technique. The main results are as follows: 1) in the Fe40Ni38Mo4B (18-x) Six alloy strip, the amorphous can be formed at 10:00 when the alloy strip is x0 ~ (2 +) ~ (2 +) 4 ~ (6) C, and the coercivity HC of the alloy strip decreases at first and then increases with the addition of Si element, and the results show that the coercivity of the alloy strip decreases firstly and then increases with the addition of Si element. At x = 4, the minimum 5.8A/m.2) Fe40Ni38Mo4814Si4 alloy strip obtained a higher saturation magnetization (Ms) of 112.6 emu / g after heat treatment at 405 鈩，

本文編號(hào)：2161339