Characteristics of Shock Compaction Assembly Using Converged Underwater Shock Waves (2nd Report, Equation of State of Magnet Powder and Numerical Calculation of Shock Compaction Process)

摘要

Fundamental properties of a shock compaction technique of applying converged underwater shock waves have been investigated for rare earth magnet powders. The rare earth magnet made from Fe-Nd-B powder is being developed to have a high magnet performance. Usually this powder is consolidated using static high pressure and bond materials. It is very difficult to obtain over 80/100 magnet purity and, thus, it is difficult to achieve maximum performance.