|
|
|
| A XPS STUDY OF REBAR PASSIVE FILM AND EFFECT OF CHLORIDE IONS ON IT |
| WANG Ying SHI Yuan-xiang WEI Bao-ming(Nanjing University of Chemical Technology; Department of Applied Chemistry; Nanjing 210009)LIN Chang-jian (Xiamen University; Department of Chemistry; Xiamen 361005) |
|
|
|
|
Abstract The composition and structure of rebar passive film as well as the effect of composite inhibitors and chloride ions on the film were studied by X-ray photoelectron spectroscopy. It was found that γ- FeOOH was the major oxide in the outer layer and the inner layer only contained FeO. The machanism of pitting corrosion induced by Cl- might be as follows. First, chloride ions adsorbed on rebar passive film, then they penetrated into the film through defects and accumulated in the inner layer of the film. Cl- and Fe2+ might form into FeCl2, so the passive film dissolved from its inner layer locally. After adding composite inhibitors, γ-FeOOH content in the outer layer increased and organic ammonium incorporated in the film to certain depth, and silicate only deposited on the surface of the film.
|
|
Received: 25 April 1998
|
Cite this article:
WANG Ying SHI Yuan-xiang WEI Bao-ming(Nanjing University of Chemical Technology; Department of Applied Chemistry; Nanjing 210009)LIN Chang-jian (Xiamen University; Department of Chemistry; Xiamen 361005). A XPS STUDY OF REBAR PASSIVE FILM AND EFFECT OF CHLORIDE IONS ON IT. J Chin Soc Corr Pro, 1998, 18(2): 107-112.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1998/V18/I2/107
|
1 储炜,史苑芗,魏宝明等.模拟混凝土孔隙溶液中钢筋钝化膜的光电化学方法研究,电化学,1995,1(3)
2 汪鹰,史苑芗,魏宝明,林昌健.中国腐蚀与防护学报,1998,18(2):102
3 Mauvice V, Yang W P, Marcus P. J. Electrochem. Soc., 1994, 141(11): 3016
4 Wagner C D. Hand book of X-ray photoelectron spectroscopy. Minnessota: Perkin-Elmer Corporaion, 1979
5 Joel C, Dunnwald J. J. Electroanal. Chem., 1989, 258:327
6 Haupt S, Strehblow H-H. Langmuir, 1987, 3:873 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
