Preparation method of Sm-Co-based alloyed lumpish magnet

• Main Authors: CUI CHUNXIANG, HAN XUHAO, LI YING, SUN JIBING, HAN RUIPING
• Format: Patent
• Language: Chinese; English
• Published: 15.09.2017
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CASTING; CHEMISTRY; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; INDUCTANCES; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention provides a preparation method of a Sm-Co-based alloyed lumpish magnet, and relates to rare earth cobalt-based permanent magnet alloy. The preparation method of the Sm-Co based alloyed lumpish magnet is a preparation method for the nano-crystal Sm-Co-based alloyed lumpish magnet with obvious magneto-crystalline anisotropy. Sm-Co-based alloyed fully-amorphous powder is prepared by conducting high-energy ball milling on the Sm-Co-based alloyed rapid-quenching ribbons, then the Sm-Co-based alloyed fully-amorphous powder is pressed into blocks by a hydraulic machine, and finally, the pressed Sm-Co based alloyed blocks are placed into a magnetic thermal treatment furnace to be subjected to magnetic thermal treatment. In the process of heating, the amorphous phase is recrystallized in the direction of the magnetic field, and accordingly the nano-crystal Sm-Co-based alloyed lumpish magnet with obvious magneto-crystalline anisotropy is prepared. By the adoption of the preparation method of the Sm-Co-base