Transcription of 磁気特性に優れる圧粉磁心の開発経緯 ... - SEI
1 4 Fe-Si-Al Recently, environmental awareness has been growing worldwide, and energy saving vehicles, such as hybrid vehicles (HVs), and clean energy generated by solar and wind power generation are being promoted.
2 Electrical operating systems and electric power devices are necessary for these applications, and electromagnetic conversion parts which are comprised of cores and windings are the key parts for them. While laminated steel and ferrite core are conventional materials for the cores, for downsizing these systems and devices and improving their power efficiency, we have developed a soft magnetic powder core (SMPC) which exhibits superior magnetic properties in a high frequency region and a high degree of forming freedom.
3 Moreover, we have put it into practical use as an HV reactor, etc. The SMPC is produced by press-forming powder with an insulator layer. In order to improve its magnetic performance, the modification of magnetic particles composition and the elimination of impurities are effective. In addition, the development and modification of insulation layer materials, its coating technologies, and additive materials such as lubricants and binders are also important. The Fe-Si-Al alloy core developed by us exhibits superior magnetic characteristics.
4 Practical and Potential Applications of Soft Magnetic powder Cores with Superior Magnetic Properties Tomoyuki Ueno Hijiri Tsuruta Tatsuya Saitou Asako Watanabe Tomoyuki Ishimine Koji Yamada1. 1
5 2. 2 1 2016 1 SEI 188 5 1 2 100kHz SiC
6 3 2 2 2 4 3 50 300 m Fe-Si Fe-Si-Al 20 200nm 600 1,500 MPa 80 98 400 800 C 3. 1 2 3 1 1 1,800 100 sec 200 C 3 Bm ( T) (Hz)
7 S i 1 Fe, Fe-Si ( ) FFSi Fe, Fe-Si ( ~300 m) 50 300 m 20 200nm 600 1,500 MPa 400 800 C 2 3 6 20 4 B8000A/m 882 MPa 5 400 C 15
8 200 C 6 120 MPa 2003 2015 10 5,000 3 2 EGR 2 3 2014 3 3
9 ( g/c m3) B8000(T) 882 MPa 1 4 020406080100120140010 020 030040 0 ( C) (MPa) 882 MPa 5 2 2016 1 SEI 188 7 R 4 6 90 6 7
10 4 8 3 SEM 10 4. 4 1 650 C 9 5 JIS 35A360 4 ( )
