NdFeBCo magnets were fabricated using underwater shock compaction, and their magnetic, mechanical and corrosion resistance properties were investigated. Cracks and voids were seen to form in the shock-consolidated magnets and increased with increasing cobalt (Co) additions. Magnetization also decreased with increasing Co additions ; however, coercivity increased. Regarding corrosion resistance, a shock-consolidated NdFeB magnet without Co addition showed faster oxidation velocity than compacts with Co additions. Regarding hardness value, NdFeBCo with Co addition of 5% addition showed a sharp increase ; however, the value decreased when Co addition exceeded 10%.
underwater shock compaction, NdFeB magnet, corrosion resistance