原子能科学技术2012，Vol.46Issue(7)：775-779,5.
辉光等离子体氮化铀表面的氢腐蚀
Hydriding Behavior of Glow-Discharge Plasma Nitrided Uranium Surface
宾韧 1刘柯钊 1陈林 2白彬 2钟永强2
作者信息
- 1. 表面物理与化学重点实验室,四川绵阳 621907
- 2. 中国工程物理研究院,四川绵阳621900
- 折叠
摘要
Abstract
Surface nitrided uranium was prepared using glow-discharge plasma nitriding method. The surface layer was examined and a comparison between surface nitrided and oxidized against hydrogen corrosion was monitored with a digital microscope. AES depth profile and XRD spectrum show that the surface-nitrided layer is about 250 nm in sputtering depth and mainly consists of crU2 N3+x, with a mild nitride-substrate interface and nitrogen diffuses into the metal bulk. SEM micrographs show that pulsed glow-discharge plasma nitriding can reduce the number of polishing scratches and other defects. Surface nitride layer retards hydrogen diffusion into bulk, delays the nucleation and restrains hydride growth. Glow-discharge plasma nitriding can passivate uranium surface against hydrogen corrosion effectively.关键词
表面改性/辉光等离子体氮化/U2N3/氢蚀Key words
surface modification/ glow-discharge plasma nitriding/ U2 N3/ hydrogen corrosion分类
矿业与冶金引用本文复制引用
宾韧,刘柯钊,陈林,白彬,钟永强..辉光等离子体氮化铀表面的氢腐蚀[J].原子能科学技术,2012,46(7):775-779,5.
