摘要
采用俄歇电子能谱和 X 射线光电子能谱,并结合氩离子原位溅射剥层研究了非晶 Ni_(63)Zr_(37)及Ni_(63)Zr_(32)La_5合金条带自由侧和贴辊侧的表层成分分布及元素的化学状态。结果表明,非晶 Ni_(63)Zr_(37)合金条带贴辊侧氧化层较自由侧厚且 Zr 的表面偏聚较为显著;加入 La 后,显著地改变了 Ni_(63)Zr_(37)合金条带两侧的表面状态;在合金条带表面及近表面,Ni 以金属态弥散分布在 Zr 和 La 的氧化物上,其电子状态受氧化物的影响;条带表层 Zr 的氧化物由 ZrO_x(1<x<2)和 ZrO 组成。
The composition depth profile and chemical characteristics of both the free anddull sides of amorphous Ni_(63)Zr_(37) and Ni_(63)Zr_(32)La_5 alloy ribbons were studied by means of Aug-er electron spectroscopy and X-ray photoelectron spectroscopy combined with the use of argonbombardment.The oxide layer is thicker and the surface segregation of zirconium is more signif-icant on the dull side than the free side for Ni_(63)Zr_(37) alloy ribbon.Addition of a small amount oflanthanum can change the surface state of the two sides of amorphous Ni_(63)Zr_(37) alloy ribbonsignificantly.On the surface and sub-surface,active metallic nickel dispersed finely on the ox-ides of zirconium and lanthanum,and its electronic state is affected by the oxides.The oxidesof zirconium consist of ZrO_x(1<x<2) and ZrO on the surface layer of the ribbons.
出处
《材料科学进展》
EI
CAS
CSCD
1993年第3期204-210,共7页
基金
国家自然科学基金
59071011
关键词
表面状态
金属玻璃
镧
amorphous Ni_(63)Zr_(37) alloy
amorphous Ni_(63)Zr_(32)La_5 alloy
surface state
