釤鈷永久磁鐵

釤鈷磁石是由稀土族元素如氧化釤、氧化鈷等金屬化合物，經燒結而成。具有高磁能積、高保磁力及抗氧化等優勢，廣泛應用於輕薄短小之科技產品。惟價格甚高，大部分市場已被釹鐵硼磁石所取代。但釤鈷磁石具有高溫度係數的特質，這點是釹鐵硼磁石所無法取代的。一般說來，釤鈷磁石並不需要做外表防銹處理，表面顏色就是磁石本身的色澤，如在常溫的使用狀況下，可以歷久不變。

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