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Corrosion and hydrogen absorption in melt spun NdFeB-TiC bonded magnets

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5 Author(s)
M. Arenas ; Dept. of Metall. & Mater. Eng., Alabama Univ., Tuscaloosa, AL, USA ; G. W. Warren ; C. P. Li ; K. W. Dennis
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The corrosion behavior of bonded NdFeB permanent magnet materials produced by melt spinning with and without TiC additions has been investigated. Typical anodic polarization experiments in 0.9 M Na2 SO4 showed that the addition of 6 a/o TiC resulted in lower corrosion currents and reduced iron dissolution at fixed potential. The role of hydrogen was also investigated by means of galvanostatic charging and discharging experiments (hydrogen absorption and desorption) in 6M KOH which showed that the addition of TiC resulted in a reduction of absorbed hydrogen

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IEEE Transactions on Magnetics  (Volume:33 ,  Issue: 5 )