用直流和交流方法试测合镍与含铁各约50％的镍-铁合金的磁性。剩磁感与饱和磁感的比值Br/B_r,与矫顽力H_c作为评比材料的指标。 本实验所用样品于热轧后经过三种冷轧压延率;即(Ⅰ)94％,(Ⅱ)98％,与(Ⅲ)99％。第(Ⅰ)类与第(Ⅱ)类样品分别在5个温度保持1小时;即(1)900°,(2)1000°,(3)1100°,(4)1200°,与(5)1300℃。 第(Ⅲ)类样品在1100℃分3个保温时间熟炼;即(1)30分,(2)1小时与(3)11/2小时。这三类经过再结晶的样品的磁滞回线均经分别测出。 合金的立方织构的形成曾用X-射线极图方法进行研究。结果将见另一篇报告。 对于这种用于磁放大器等的合金材料的发展,最后作了讨论。
The D. C. and A. C. methods are used for the measurement of the magnetic properties of 50pct. nickel and 50 pct. iron Ni-Fe alloy. The ratio between the remanence and the magneticsaturation induction, B_r/B_s, and the coercive force, H_c, are taken as a criterion for assessing themagnetic characteristics of the alloy. The samples used in the experiments are cold-rolled with (Ⅰ) 94 per cent, (Ⅱ) 98 per cent and(Ⅲ) 99 per cent reductions. The class Ⅰ and class Ⅱ samples are annealed at (1) 900°, (2) 1000°, (3)1100°, (4) 1200° and (5) 1300℃ for one hour. The class Ⅲ samples are annealed at 1100℃ for(1) 30 minutes, (2) one hour, and (3) one and half an hour respectively. The formation of the cubic texture of the alloy has been studied by the X-ray pole figuremethod and the results Will be presented in another paper. The development of the material used for the magnetic amplifiers is finally discussed.
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