无氧钆金属新型制备方法（英文）  

A New Process of Manufacturing “Oxygen-free” Gd

作　　者：李里[1] 李国玲[1,2] 徐丽 熊义富[4] 李星国[1] 

机构地区：[1]北京大学,北京100871 [2]青岛大学,山东青岛266071 [3]国家电网全球能源互联网研究院未来科技城北区国网智能电网研究院,北京102211 [4]四川材料与工艺研究所,四川绵阳621907

出　　处：《稀有金属材料与工程》2016年第10期2509-2512,共4页Rare Metal Materials and Engineering

基　　金：Project of the Ministry of Science and Technology of China(2012CBA01207,2010CB631301);National Natural Science Foundation of China(U1201241,11375020,21321001)

摘　　要：采用氢等离子体电弧熔炼技术制备了无氧稀土金属钆。相比传统的氩气等离子体电弧熔炼技术,该方法除氧效果更明显。这得益于熔炼过程中高温下分解和激化的氢原子。熔炼过程中氧由基体金属内部迁移至表面也发挥了重要作用。采用光谱测试仪检测到了Ar I、Ar II、H I及其他多个可能的反应。在文章中详细探讨了氢原子热力学反应。“Oxygen-free” Gd was fabricated by Hydrogen plasma arc melting （HPAM）. The Oxygen concentration had a tendency of reduction compared with that done by Ar PAM. All these are attributable to the process of melting, especially the hydrogen atoms dissociated and activated in high temperature HPAM. An increased diffusion of oxygen in Gd-O solid solution to the surface is also believed to play an important role in removal of oxygen. The optical emission spectroscopy （OES） measurement is used to confirm the substances which were involved in the plasma like Ar I, Ar II and H I and some possible reactions. The effect of H with thermodynamic estimation is discussed in details.

关 键 词：钆 氢 氧 氢等离子体电弧熔炼 

分 类 号：TG146.45[一般工业技术—材料科学与工程]