HDDR工艺对Nd_(15)Fe_(66)Co_(12)B_7各向异性的影响  

Effects of HDDR Process Anisotropy in Nd_(15)Fe_(66)Co_(12)B_7

作　　者：林培豪[1] 陈旭[1] 

机构地区：[1]桂林电子科技大学信息材料科学与工程系,广西桂林541004

出　　处：《电工材料》2007年第1期27-29,36,共4页Electrical Engineering Materials

基　　金：广西自然科学基金项目(桂科基0310001)

摘　　要：从氢与Nd2(Fe,M)14B相互作用的热力学和动力学出发,研究了HDDR工艺对Nd15Fe66Co12B7磁粉各向异性的影响。结果发现,氢化歧化初期减慢歧化速度,可提高磁粉的各向异性;脱氢再复合初期通过升高温度或降低氢气压来增加脱氢再复合速度,可提高磁粉的各向异性;脱氢再复合初期,加入氩气处理,会降低磁粉的各向异性;在脱氢再复合中再复合驱动力过大,不利于磁粉各向异性的提高。This project study on the influence of HDDR process to the anisotropy of Nd-5Fe66Co12B7 magnetic powder from the interactive thermodynamics and kinetics of the hydrogen and Nd2 （Fe, M）~4B. The result shows that slowing the disproportion process at the beginning of hydrogenation-disproportion process can enhance the anisotropy of magnetic powder; Accelerating desorption-recombination by increasing the temperature or reducing the hydrogen air pressure at the beginning of desorption-recombination process can enhance the anisotropy of magnetic powder too;the additive of argon at the beginning of desorption-recombination process can weaken the anisotropy of magnetic powder; the too large driving force in the desorption-recombination process is not conducive to the improvement of the anisotropy.

关 键 词：HDDR 磁粉 各向异性 

分 类 号：TM205.1[一般工业技术—材料科学与工程] TM272[电气工程—电工理论与新技术]