Department of Rare Earth Alloy Materials

作者:黄付贵;李东;吕其春;
关键词:日息:8496,巴山:5273
单位:Department of Rare Earth Alloy Materials Iron & Steel Research Institute,Guangzhou 510640,China,Central Iron & Steel Research Institute,Beijing,Central Iron & neodymium prices
http://www.999magnet.com/products/142-neodymium-prices Steel Research Institute,Beijing,
摘要:<正> 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.