| 摘要 |
PURPOSE:To provide an reliable R-TM-B permanent magnet which corrosion resistance is improved. CONSTITUTION:This is the manufacture of an R-TM-B permanent magnet, which performs electrolytic plating as the pretreatment of electrolytic Zn plating for covering, with the view of improvement of corrosion resistance, the R-TM-B permanent magnet consisting of 5-40% R (here, the combination of one or more kinds of rare earth elements including Y), 50-90% TM(here, TM is a transition metal centering on Fe and Co, and a part may be replaced with other metallic elements or nonmetallic elements) and 0.2-8% B (boron) by weight percentage. |
