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稀土磁体将使电动机获得革命性的发展。用稀土元素的合金材料制造的磁体,比同样大小的普通磁铁有力得多。有了稀土磁体,可以造出重量轻、惯性低的小型电动机。采用稀土磁体的电动机比同样大小的普通电动机多产生50%的转矩。采用稀土磁体的电动机至今尚未普及,主要障碍因素是成本。稀土磁体多数是用含有钴和稀土元素钐的合金制造的,材料成本比较高,加工处理不易。但是,我们可以改用另一种稀土元素——钕;用钕来制造磁体,成本降低,钕磁体电动机比同样成本的别的
Rare earth magnets will make the motor a revolutionary development. Magnets made of a rare earth elemental alloy are much more powerful than regular magnets of the same size. With rare earth magnets, you can create small motors with low weight and low inertia. Motors using rare earth magnets produce 50% more torque than regular motors of the same size. Motors using rare earth magnets have not yet become popular, the main obstacle is the cost. Most of the rare earth magnets are made of alloys containing cobalt and rare earth elements samarium, the material cost is relatively high, the processing is not easy. However, we can use another rare earth element, neodymium, to produce magnets from neodymium at a lower cost, neodymium magnet motors than the same cost