The present invention provides high corrosion resistant sintered NdFeB magnets and preparation process thereof. The composition of said magnets by mass% is Nd x R xl Fe 100-(x + xl + y + yl + z) T y M yl B z , wherein 24 ‰¤ x ‰¤ 33, 0 ‰¤ x1 ‰¤ 15, 1.43 ‰¤ y ‰¤ 16.43, 0.1 ‰¤ yl ‰¤ 0.6, 0.91 ‰¤ z ‰¤ 1.07, R is one or more selected from the group consisting of Dy, Tb, Pr, Ce and Gd, T is one or more selected from the group consisting of Co, Cu and Al, M is one or more selected from the group consisting of Nb, Zr, Ti, Cr and Mo, and M is distributed within the grain boundary phase of the NdFeB magnets.
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机译：本发明提供了一种高耐腐蚀性的烧结钕铁硼磁体及其制备方法。所述磁体的质量百分比组成为Nd x R xl Fe 100-（x + xl + y + yl + z）T y Myl B z，其中24‰x‰33、0‰x1‰15 ，1.43‰y 16.43、0.1‰yl‰0.6、0.91‰z‰1.07，R是选自Dy，Tb，Pr，Ce和Gd的一种或多种，T是一种或多种M选自由Co，Cu和Al组成的组中，M是选自由Nb，Zr，Ti，Cr和Mo组成的组中的一种或多种，并且M分布在NdFeB磁体的晶界相内。
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