含Ag抗菌双相不锈钢表面腐蚀产物的XPS分析

doi:10.11902/1005.4537.2017.042

中国腐蚀与防护学报

2018, Vol. 38

Issue (6): 533-542 DOI: 10.11902/1005.4537.2017.042

本期目录 | 过刊浏览

含Ag抗菌双相不锈钢表面腐蚀产物的XPS分析

刘东,向红亮(

),刘春育

1. 福州大学机械工程及自动化学院福州 350116

XPS Analysis of Corrosion Product Scale on Surface of Silver-bearing Antibacterial Duplex Stainless Steel

Dong LIU,Hongliang XIANG(

),Chunyu LIU

1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China

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摘要:

采用X射线光电子能谱技术 (XPS) 研究了含Ag抗菌双相不锈铸钢在有菌环境中经电化学极化后的表面腐蚀产物。结果表明：添加纯Ag颗粒制备的不锈钢经1150 ℃固溶处理后，其钝化膜表层中的Ag主要以Ag²⁺氧化物和游离态的形式存在，Cr主要以CrO₂，CrO₃和Cr(OH)₃形式存在，而添加150~300 μm Cu-Ag中间合金颗粒制备的不锈钢经1150 ℃固溶处理后，其钝化膜表层中的Ag主要以Ag²⁺，Ag⁺和Ag^2/3+氧化物形式存在，Cr以CrO₂、Cr₂O₃和CrO₃等多价态铬氧化物形式共存，且与前者相比，添加150~300 μm Cu-Ag中间合金颗粒制备的材料其钝化膜中Cr₂O₃、钼氧化物和MoO₄^2-的含量更多，而α-FeOOH和Cr(OH)₃等氢氧化合物以及水合物的含量更少，表明其钝化膜的稳定性优于添加纯Ag颗粒制备的材料。

关键词 ：含Ag抗菌双相不锈钢, 钝化膜, XPS技术

Abstract：

Silver-bearing antibacterial duplex stainless steels were prepared by adding silver granules (code name A) or 150~300 μm Cu-Ag particles (code name B) respectively. The two steels were then subjected to solid solution treatment at 1150 ℃. The surface passive films formed on the two steels after potentiodynamic polarization test in bacteria bearing liquid were analyzed by X-ray photoelectron spectroscopy (XPS). The results indicated that there exist silver as atomic Ag and oxide AgO, while chromium as CrO₂, CrO₃and Cr(OH)₃in the surface passive film of the steel A. However silver as oxides of AgO, Ag₂O and Ag₃O, while Cr as chromic oxides of multi-valence present in the surface passive film of the steel B. In comparison with the passive film on the steel A, that on the steel B has higher amount of Cr₂O₃, molybdenum oxides and MoO₄^2-, but lower amount of hydroxides/hydrates, meaning that the stability of the passive film on the steel B is better.

Key words： silver-bearing antibacterial duplex stainless steel passive film XPS technology

收稿日期: 2017-03-17

ZTFLH:

TG174.3

基金资助:福建省重大专项专题(2017HZ0001);福建省产业技术联合创新专项(FG-2016001);福建省教育厅中青年科研项目(JAT160066);福州市科技计划项目(2018-G-68);和福建省海洋高新产业发展专项 (闽海渔高新 (2014)14)

通讯作者: 向红亮 E-mail: hlxiang@fzu.edu.cn

Corresponding author: Hongliang XIANG E-mail: hlxiang@fzu.edu.cn

作者简介: 刘东，男，1984年生，实验师

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引用本文:

刘东,向红亮,刘春育. 含Ag抗菌双相不锈钢表面腐蚀产物的XPS分析[J]. 中国腐蚀与防护学报, 2018, 38(6): 533-542.
Dong LIU, Hongliang XIANG, Chunyu LIU. XPS Analysis of Corrosion Product Scale on Surface of Silver-bearing Antibacterial Duplex Stainless Steel. Journal of Chinese Society for Corrosion and protection, 2018, 38(6): 533-542.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2017.042 或 https://www.jcscp.org/CN/Y2018/V38/I6/533

图1 试样A与B在无菌/有菌环境下的极化曲线

表1 O1s结合能及对应价态相对含量

图2 试样A与B钝化膜表层O1s的窄区XPS扫描谱

图3 试样A与B钝化膜表层Ag3d5/2的窄区XPS扫描谱

表2 Ag3d5/2结合能及对应价态相对含量

表3 Fe2p3/2结合能及对应价态相对含量

图4 试样A与B钝化膜表层Fe2p3/2的窄区XPS扫描谱

图5 试样A与B钝化膜表层Cr2p的窄区XPS扫描谱

表4 Cr2p结合能及对应价态相对含量

图6 试样A与B钝化膜表层Mo3d5/2的窄区XPS扫描谱

表5 Mo3d5/2结合能及对应价态相对含量

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