화학공학소재연구정보센터
Materials Science Forum, Vol.360-3, 559-563, 2001
The magnetic properties of compacted Fe73.5Cu1Nb3Si13.5B9 alloy in amorphous and nanocrystalline state
Bulk samples were obtained from a powder of crushed amorphous alloy ribbon of standard Finemet composition by uniaxial cold compacting. The structure of the powder was determined using X-ray diffraction. The Curie and the crystallization temperatures of powder and bulk samples were determined from thermomagnetic curves measured with a vibrating sample magnetometer (VSM). Uniaxial compacted ring cores were produced. The hysteresis loops of these bulk samples were measured with a.c, hysteresisgraph with a storage oscilloscope. We have found that the ring core prepared by 7 GPa uniaxial stress of powder exhibits a coercivity of 180 A/m after annealing at 540 degreesC.