表层镁合金化NdFeB磁体的制备及其耐腐蚀性能

冉仁豪, 单慧琳, 张鹏杰, 汪冬梅, 斯佳佳, 徐光青, 吕珺

Preparation and Corrosion Resistance of Surface Mg-alloying NdFeB Magnets

RAN Renhao, SHAN Huilin, ZHANG Pengjie, WANG Dongmei, SI Jiajia, XU Guangqing, LV Jun

表1 NdFeB及经不同参数获得的NdFeB(Mg)样品的Ecorr、Icorr、Rs和Rct值

Table 1 Ecorr, Icorr, Rs and Rct values of NdFeB and various NdFeB(Mg) specimens

Specimens Ecorr / V Icorr / A·cm-2 Rs / Ω·cm2 Rct / Ω·cm2 NdFeB -0.914 6.896 × 10-5 7.768 836 NdFeB(Mg)-500-105 -0.801 2.342 × 10-5 7.565 6840 NdFeB(Mg)-550-105 -0.684 1.055 × 10-6 7.823 18335 NdFeB(Mg)-600-105 -0.763 7.068 × 10-6 7.868 10558 NdFeB(Mg)-550-90 -0.753 9.661 × 10-6 7.658 8550.8 NdFeB(Mg)-550-120 -0.719 4.032 × 10-6 8.008 11670 NdFeB(Mg)-550-105-m -0.768 2.513 × 10-5 7.921 5254