简介概要

An AES Study of Initial Oxidation of Ce-La Alloy at Room Temperature and Low Oxygen Pressure

来源期刊:JOURNAL OF RARE EARTHS2004年增刊第1期

论文作者:Jiang Chunli Wang Xiaolin Yang Jiangrong Lu Lei Zhou Wei Xiao Hong

Key words:Auger electron spectroscopy; oxidation; Ce-La alloy; rare earths;

Abstract: Auger Electron Spectroscopy was used to characterize the initial stages of the oxidation of Ce-5% La alloy in an oxygen atmosphere at low pressure( ~ 10-6 Pa) and room temperature after the surface is cleaned by Ar+ ion bombardment.It is shown that exposure of clean cerium to oxygen causes the appearance and development of three new Auger peaks at 97,662 and 676 eV, which steadily grow during oxidation of cerium.Upon oxygen dose less than 20 L,a semi-protective layer of oxide forms on the surface of cerium and its growth follows a logarithmic relationship.With further exposure of oxygen, the oxide film grown in the previous stage becomes thicker and the uptake of oxygen reaches saturation at oxygen exposure of 25 L,and the oxide film mainly consists of Ce2O3.

详情信息展示

An AES Study of Initial Oxidation of Ce-La Alloy at Room Temperature and Low Oxygen Pressure

Jiang Chunli1,Wang Xiaolin1,Yang Jiangrong1,Lu Lei1,Zhou Wei1,Xiao Hong1

(1.China Academy of Engineering Physics, Mianyang 621900, China)

Abstract:Auger Electron Spectroscopy was used to characterize the initial stages of the oxidation of Ce-5% La alloy in an oxygen atmosphere at low pressure( ~ 10-6 Pa) and room temperature after the surface is cleaned by Ar+ ion bombardment.It is shown that exposure of clean cerium to oxygen causes the appearance and development of three new Auger peaks at 97,662 and 676 eV, which steadily grow during oxidation of cerium.Upon oxygen dose less than 20 L,a semi-protective layer of oxide forms on the surface of cerium and its growth follows a logarithmic relationship.With further exposure of oxygen, the oxide film grown in the previous stage becomes thicker and the uptake of oxygen reaches saturation at oxygen exposure of 25 L,and the oxide film mainly consists of Ce2O3.

Key words:Auger electron spectroscopy; oxidation; Ce-La alloy; rare earths;

【全文内容正在添加中】

<上一页 1 下一页 >

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号