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研究了退火温度为５５０℃的纳米晶化过程中加热速度对Ｆｅ７２．７Ｃｕ１Ｎｂ２Ｖ１．８Ｓｉ１３．５Ｂ９与Ｆｅ７３．５Ｃｕ１Ｎｂ３Ｓｉ１３．５Ｂ９合金磁性的影响．磁性测量结果表明，退火加热速度对这两种合金软磁性能有明显的影响，快速加热可显著提高合金的初始磁导率μｉ．对Ｆｅ７２．７Ｃｕ１Ｎｂ２Ｖ１．８Ｓｉ１３．５Ｂ９合金，当加热速度由２℃／ｍｉｎ提高到２６０℃／ｍｉｎ时，合金的μｉ由４２０００提高到８１０００；对于Ｆｅ７３．５Ｃｕ１Ｎｂ３Ｓｉ１３．５Ｂ９合金，当加热速度由０５℃／ｍｉｎ提高到２６０℃／ｍｉｎ时，合金的μｉ由２６０００提高到９２０００．通过Ｘ射线衍射分析了不同退火加热速度条件下形成的纳米晶粒尺寸，发现快速加热可明显降低纳米晶粒尺寸．对于Ｆｅ７２．７Ｃｕ１Ｎｂ２Ｖ１．８Ｓｉ１３．５Ｂ９合金，当退火加热速度由２℃／ｍｉｎ提高到２６０℃／ｍｉｎ时，纳米晶粒尺寸由１４６ｎｍ降至１３１ｎｍ；对于Ｆｅ７３．５Ｃｕ１Ｎｂ３Ｓｉ１３．５Ｂ９合金，当加热速度由０５℃／ｍｉｎ提高到２６０℃／ｍｉｎ时，纳米晶粒尺寸由１３１ｎｍ降至１０６ｎｍ．说明加热速度对磁性的影响主要是通过改变纳米晶的晶粒尺寸所致．分析了两种?
The effect of heating rate on the magnetic properties of Fe72.7Cu1Nb2V1.8Si13.5B9 and Fe73.5Cu1Nb3Si13.5B9 alloy during the nanocrystallization annealing at 550 ℃ was studied. The results of magnetic measurements show that the annealing rate has a significant effect on the soft magnetic properties of these two alloys. Rapid heating can significantly increase the initial permeability μi of the alloys. For Fe72.7Cu1Nb2V1.8Si13.5B9 alloy, when the heating rate increased from 2 ℃ / min to 260 ℃ / min, the μi increased from 42000 to 81000; for Fe73.5Cu1Nb3Si13.5B9 alloy, the heating rate increased from 0.5 ℃ / min increased to 260 ℃ / min, the alloy μi increased from 26000 to 92000. The size of nanocrystals formed under different annealing heating rates was analyzed by X-ray diffraction. It was found that the rapid heating can obviously reduce the size of nanocrystalline grains. For the Fe72.7Cu1Nb2V1.8Si13.5B9 alloy, the nanocrystalline grain size decreased from 14.6nm to 13.1nm when the annealing heating rate increased from 2 ℃ / min to 260 ℃ / min. For Fe73.5Cu1Nb3Si13.5B9 alloy, When the heating rate increased from 05 ℃ / min to 260 ℃ / min, the size of nanocrystalline grains decreased from 131 nm to 10 6 nm. This shows that the influence of heating rate on the magnetic properties is mainly caused by changing the grain size of nanocrystals. Two kinds of analysis?