东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (8): 1153-1156.DOI: -

• 论著 • 上一篇    下一篇

NiW合金基带表面c(2×2)-S超结构的硫化处理

王雪;李成山;于泽铭;樊占国;   

  1. 东北大学材料与冶金学院;西北有色金属研究院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2009AA032401);;

Sulfuration of c(2×2)-S superstructure on NiW alloy substrates

Wang, Xue (1); Li, Cheng-Shan (2); Yu, Ze-Ming (2); Fan, Zhan-Guo (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China; (2) Northwest Institute for Non-Ferrous Metal Research, Xi'an 710016, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Wang, X.
  • About author:-
  • Supported by:
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摘要： 由于硫元素与氧元素化学特性相近,利用硫在Ni基带表面形成的c(2×2)-S超结构可以有效地控制氧化物缓冲层在Ni基带表面的织构.本研究提出将单质硫在120℃下挥发,利用单质硫在基带表面的吸附与脱附形成有序c(2×2)-S超结构的新技术路线.X光电子能谱(XPS)结果显示,采用新技术处理的金属基带表面有明显的硫元素,基带表面Ni和S的原子比例符合c(2×2)结构中S的覆盖度,即0.5的要求.在经过硫化处理后的NiW基带表面制备缓冲层,结果显示,新硫化处理技术改善了NiW基带表面的物理化学特性,有利于氧化物缓冲层的外延生长.

关键词: 硫化, c(2×2)-S, 超结构, NiW基带, 缓冲层

Abstract: Because of the similarity of chemical properties between sulfur and oxygen, the formation of c(2×2)-S superstructure on the surface of NiW substrates is effective to control the texture of the epitaxial oxide buffer layers on the surface of metal Ni substrates. A new technological route was put forward to form the c(2×2)-S superstructure on the surface of substrates by the sublimation (at 120°C), adsorption and desorption of elementary sulfur. The X-ray photoelectron spectra (XPS) analysis indicated that notable amount of S element can be observed on the metal substrates treated by the new method. The ratio of Ni atoms to S atoms is in accord with the coverage of c(2×2) structure which is 0.5. The results of the buffer layer prepared on the surface with c(2×2)-S superstructure showed that the new sulfuration method improves the physical and chemical properties of the surface of NiW substrates and is propitious for the growth of epitaxial oxide layers.

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