| 摘要 |
PURPOSE:To improve the magnetic performance and heat-resistance by a method wherein the rare earth intermetallic compound powder is mixed with the metallic alloy and is formed by pressurized extrusion within the magnetic field while heating in the mold. CONSTITUTION:The rare earth intermetallic compound powder such as SmCo5, Sm(Co 0.8 Cu 0.2)5, Ce(Co 0.8 Cu 0.8 Cu 0.2)5, etc. is treated with heat for magnetic hardening. After that, is powdered, next the alloy magnetic powder is mixed or plated with the metallic bonding material. These metal alloy are Pb, Sn, In, Bi, Cd, Al, Cu, Zn, solder, Woods' metal alloy, cupper alloy, various soldering alloy, etc. The melting point of the metallic bonding material is 200- 900 deg.C and desirably at about 250-600 deg.C. Then, the metallic bond type magnet 19 is provided by solidified under cooling and affording anisotropic property by means that the mixture 14 of the magnetic powder and the metallic bonding material is passed though the die 13 under 600 deg.C and under 30kOe of the magnetic field. |
