Magnetostriction of 2605SA1 Metglas® ribbon in various AC or Pulse magnetic fields

• Main Authors: Pin-Cheng Li, 李品澄
• Other Authors: Wei-Chun Cheng
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/k7ychs

碩士 === 國立臺灣科技大學 === 機械工程系 === 105 === The commercial amorphous ribbon, Metglas® 2605SA1, is made by melt spinning method. This material exhibits excellent magneto-mechanical properties. The main component of this material is iron 78%, while the remaining components are silicon and boron. It is also known as iron-based amorphous ribbon. The Metglas® 2605SA1 strip widely used in power components such as transformers. In this study, we will design and improve the magnetostrictive test method under the alternating magnetic field and the pulsed magnetic field. In addition, we will discuss the commercial amorphous ribbon, Metglas® 2605SA1, and the magnetic properties of this amorphous ribbon after field heat treatment. If the strip has gone through an external magnetic field heat treatment, the process is called field annealing treatment. According to the X-ray diffraction results, it confirms that the strip of Metglas® 2605SA1 is in amorphous state before and after field annealing. The VSM test was carried out before and after the field annealing treatment. The magnetostrictive test was carried out in the direct current magnetic field, alternating current magnetic field, and pulsed magnetic field, respectively. The magnetic properties of the strip are obtained by the VSM test. The magnetostrictive test allows us to obtain the magnetostriction of the thin strip in various kinds of magnetic fields. It can be seen from the experimental results that the saturation magnetization increase and the coercive force decrease after the field heat treatment. In some cases the magnetostriction will decrease and show obvious uniaxial anisotropy. In addition, when the amount of magnetostriction is small, the size of the noise generated during the ribbon operating in the power element is also reduced. These features of Metglas® 2605SA1 amorphous ribbon contribute to many useful applications such as the motor, transformers, generators and other power components.