电机步进电机的种类和特点(正文) - 印刷 - 能源信息网 机的种类和特点步进电机在构造上有三种主要类型:反应式(variablereluctance,vr)、永磁式(permanentmagnet,pm)和混合式(hybridstepping,hs)。反应式定子上有绕组、转子由软磁材料组成。结构简单、成
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NbFeB permanent magnets 钕铁硼永磁
Materials for Permanent Magnets 永磁材料
Barium ferrite permanent magnets 钡铁氧体永磁材料
rare earth permanent magnets 稀土永磁
Pr-based permanent magnets Pr基永磁材料
Bonded NdFeB permanent magnets have been used very widely, but there are still some problems. In the paper, a lot of experiments have been done in order to improve the magnetic properties.
其中粘结钕铁硼永磁材料应用广泛,但仍存在不少问题,本文通过大量的试验,对影响粘结钕铁硼磁体磁性能的工艺进行了深一步研究,以提高磁性能。
参考来源 - 快淬粘结永磁体的工艺、组织结构与磁性The electromagnetic stirring was carried out in the process of solder joint formation in the lead-free solder ball and substrate by means of revolving permanent magnets. Consequently, some defects were found through analysis, causing negative impacts on solder joints reliability.
利用旋转永磁体法对无铅焊料球和基板在受热形成焊点的过程中实施电磁搅拌,试验之后,通过分析结果,发现该方法存在缺陷,对焊点可靠性有不利影响。
参考来源 - 基于电磁搅拌的无铅互连新方法的初步研究Heretofore, the investigating work was concentrated in some permanent magnets with a higher Curie temperature and a higher magnetic anisotropy, which can be used above 450℃.
目前，关于新型永磁体的研究大多集中在可应用于较高温度(≥450℃)的Sm-Co系列高居里温度和高矫顽力永磁材料。
参考来源 - 新型Sm·2,447,543篇论文数据，部分数据来源于NoteExpress
同义词： static magnet
以上来源于: WordNet
It is the key ingredient of super-strong permanent magnets.
它是超强永久磁铁的关键成分。
Most magnets, like the ones on many refrigerators, cannot be turned off; they are called permanent magnets.
大多数磁铁，像吸在冰箱上的那些，不能被关闭磁性；他们被称为永磁体。
Most motors used in electric and hybrid cars today use a different type of motor that relies on permanent magnets.
大部分用于电动车和混合动力车的发动机于此不同，需依赖永久磁铁才能运转。
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