【摘 要】
:
Anisotropic bonded magnets were prepared by warm compaction using anisotropic Nd-Fe-B powder. The forming process, magnetic properties, and temperature stabilit
【机 构】
:
School of Materials Science and Engineering,Aichi Steel Corporation
论文部分内容阅读
Anisotropic bonded magnets were prepared by warm compaction using anisotropic Nd-Fe-B powder. The forming process, magnetic properties, and temperature stability were studied. The results indicate that the optimal temperature of the process, which was decided by the viscosity of the binders, was 110℃. With increasing pressure, the density of the magnets increased. When the pressure was above 700 MPa, the powder particles were destroyed and the magnetic properties decreased. The magnetic properties of the anisotropic bonded magnets were as follows: remanence Br = 0.98 T, intrinsic coercivity iHc=1361 kA/m, and maximum energy product BHmax = 166 kJ/m3. The magnets had excellent thermal stability because of the high coercivity and good squareness of demagnetization curves. The flux density of the magnets was 35% higher than that of isotropic bonded Nd-Fe-B magnets at 120℃ for 1000 h. The flux density of the bonded magnets showed little change with regard to temperature.
其他文献
本文的主要工作是研究一套适应于高校的淋浴控制系统,取代过去的人工收费,减少水资源浪费等情况.给出了一种淋浴水控系统的解决方案.
市政给水管道工程设计,要依据室外给水设计规范、小区给水规范、施工规范、消防规范、给水排水设计手册等相关规范和手册,并结合地区地理、气候特点及当地水司的运行规程等实
本文分析了我国村镇建设中建筑材料能耗对我国建筑节能的巨大影响.针对目前我国村镇建筑材料标准化存在的问题,总结了村镇建筑材料标准化研究和发展方向,同时阐述了发展村镇
Silicon oxide (SiOx) nanowires are generally grown on Si substrate under the catalysis of Au in N2 atmosphere at elevated temperatures. Because the price of Au
The diversity of microstructure and properties of 830 Mpa grade pipeline steel containing chromium was investigated by optical microscope and transmission elect
Two variants of systematic resampling (S-RS) are proposed to increase the diversity of particles and thereby improve the performance of particle filtering when
The microstructure of an as-cast Mg-Zn-Er alloy was investigated through scanning electron microscopy (SEM) and transmission electron microscopy (TEM) equipped
In the background of little reuse and large stockpile for iron ore railings, iron ore tailing from Chinese Tonghua were used as raw material to prepare cementit
Based on curve fitting of coefficients of three component forces of the Messina Straits Bridge, and the previously proposed semi-analytical expressions of flutt