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The process of the epoxy-bonded Sm_2TM_(17) magnets includes:(1)after melting,the ingots are treatedby solid soluiion,and then aged and pulverized;(2)the obtained alloy powder is mixed with epoxy resin bind-er;(3)the mixture is pressed in a magnetic field;(4)the compacts are cured.When theSmCo_(4.9)Fe_(2.7)Cu_(0.54)Zr_(0.13) alloy is heat treated and pressed with optimum pressing parameters,the high qualitybonded magnets with B_r=8250 G,_iH_c=13000 Oe,and(BH)_(max)=16MGOe can be obtained.The stabilityof the magnets is studied also.The irreversible loss of O.C.(open circuit)remanence B_r in the temperaturerange between 25 and 150℃,is less than 4%.The average temperature coefficient at temperatures between 25and 70℃ is-0.03%/℃.The magnets obtained have heat resistance up to 130℃ even in long-term service,and have good corrosion resistance in acid,alkali and salt solutions.
The process of the epoxy-bonded Sm_2TM_ (17) magnets includes: (1) after melting, the ingots are treated by solid soluiion, and then aged and pulverized; (2) the obtained alloy powder is mixed with epoxy resin bind- (4.9) Fe 2.7 (2.7) Cu 0.54 Zr 0.13 alloy is heat treated and pressed with optimum pressing parameters, the high quality bonded magnets with B_r = 8250 G, _iH_c = 13000 Oe, and (BH) _ (max) = 16 MGOe can be obtained. The stability of the magnets is studied also. and 150 ° C, is less than 4%. The average temperature coefficient at temperatures between 25 and 70 ° C is-0.03% / ° C. The magnets obtained have heat resistance up to 130 ° C even in long-term service, and have good corrosion resistance in acid, alkali and salt solutions.