高饱和磁化强度体状Fe_(16)N_2化合物  

Investigation of High Saturation Magnetization of Bulk Fe_(16)N_2 Compound

作　　者：连法增[1] 周桂琴[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2001年第5期543-546,共4页Journal of Northeastern University(Natural Science)

基　　金：国家'九五'重点科技攻关项目 ( 970 90 8913) .

摘　　要：利用固气反应原理研究了γ F(N) ,α′ Fe(N)和α″ Fe16N2 相的制备方法及其磁性·利用粒度为 6 μm的铁粉在NH3/[NH3+H2 ]之比为 3%～ 10 %的气氛中于 6 40℃反应 6h后 ,不同淬火介质获得不同的淬火产物·水淬可获得几乎纯净的γ Fe(N)相·液氮淬火可获得 95 %的α′ Fe(N)相 ,并推算出α′ Fe(N)相的饱和磁化强度为 2 5 6Am2 ·kg-1·利用 95 %α′ Fe(N)相的粉末研究了不同回火温度和时间对回火产物的影响·在 15 0℃回火处理 1.5h后获得 5 0 %的体状α″ Fe16N2化合物 ,并推算出α″ Fe16N2 化合物的饱和磁化强度约为 2 93Am2 ·kg-1·Using the solid gas reaction principle,the fabrication and magnetic properties of γ Fe(N), α ′ Fe(N) and α ″ Fe 16 N 2 compound in Bulk form were studied. Under3%～10%NH 3/[NH 3+H 2] atmosphere,the iron powders with particle size 6?μm were reacted with at 640?℃ for 6h. Then the different quenching products were obtained with different quenching media. 95% α ′ Fe(N) phase was produced with liquid nitrogen quenching media. The saturation magnetization of α ′ Fe(N) is 256?Am 2·kg -1 by the calculation. The effect of the temper temperature and time of 95% α ′ Fe(N) powders on the tempering products was investigated. 50% α ″ Fe 16 N 2 compounds in bulk was obtained at 140?℃ tempering for 1.5?h. The saturation magnetization of α ″ Fe 16 N 2 is about 293?Am 2·kg -1 by the calculation.

关 键 词：铁氮化合物 固气反应 回火 α“-Fe16N2 磁性 制备方法 饱和磁化强度 

分 类 号：TM27[一般工业技术—材料科学与工程] O482.5[电气工程—电工理论与新技术]