Sm_2Fe_(17)型合金氮化工艺的研究进展  

Research Progress on Nitrogenization of Sm_2Fe_(17) Alloy

作　　者：王书桓 袁亮亮 赵定国 高爱民 宋春燕 李彬 Wang Shuhuan Yuan Liangliang Zhao Dingguo Gao Aimin Song Chunyan Li Bin(College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063000, Chin)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063000

出　　处：《中国稀土学报》2017年第3期315-321,共7页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金项目(51574104)资助

摘　　要：具有优异磁性能的Sm_2Fe_(17)N_x材料在制备过程中,氮化工艺是极其重要的环节。对Sm_2Fe_(17)型合金氮化的晶体结构、扩散反应等基本原理进行了总结,分析了氮化压力、时间、温度等因素对氮化工艺的影响,若氮化时间较短则氮化不完全,而氮化时间过长则导致氮分布不均匀等;指出了现有氮化工艺在固态粉末条件下进行渗氮处理时,存在氮化程度不均一、氮化效率低等问题;提出了高压条件下实现液态或固态合金直接氮化制备钐铁氮合金粉体的新展望。Nitriding technique is an important link for the producing of Sm2Fe17Nx which is excellent magnetic material. Firstly, the paper made basic principle conclusions on crystal structure and diffusion reaction of Sm2Fe17 alloy nitrogenization. Secondly, it analysed the influences of pressure, such as overtime nitriding leading to asymmetrical nitrogen distribution time and temperature to nitriding technique This paper pointed out the problems in the process of nitriding treatment with solid powder, including asymmetrical nitriding, lower efficiency of nitriding and so on. Finally, it put forward the new outlook for producing powder of Sm2Fe17Nx through liquid or solid alloy direedy under high pressure.

关 键 词：Sm2Fe17型合金 SM2FE17NX 氮化工艺 

分 类 号：TG146.45[一般工业技术—材料科学与工程]