X-ray diffraction analysis of rust layer on a weathering steel bridge with surface treatment using synchrotron radiation

被引:8
作者
Yamashita, Masato [1 ]
Hara, Shuichi
Kamimura, Takayuki
Miyuki, Hideaki
Sat, Masugu
机构
[1] Univ Hyogo, Grad Sch Engn, Div Mech Engn, Himeji, Hyogo 6712280, Japan
[2] Sumitomo Met Technol Inc, Invest & Res Div, Amagasaki, Hyogo 6600891, Japan
[3] Sumitomo Met Technol Inc, Corp Res & Dev Labs, Amagasaki, Hyogo 6600891, Japan
[4] Japan Synchrotron Radiat Res Inst, Ind Applicat Div, Sayo, Hyogo 6795198, Japan
关键词
atmospheric corrosion; rust layer; weathering steel; synchrotron radiation; X-ray diffraction; protective ability index (PAI);
D O I
10.2320/matertrans.48.579
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have examined the structure of rust layer formed on a weathering steel bridge, to which the surface treatment, employing the effect of Cr-2(SO4)(3) sophisticatedly designed to form the protective goethite (alpha-FeOOH) rust layer which contains a certain amount of Cr, Cr-goethite, was applied in 1996, using X-ray diffraction at SPring-8 synchrotron radiation facility. It was shown that the formation of alpha-FeOOH was promoted and/or crystal growth of gamma-FeOOH was suppressed by the surface treatment. The increase in the protective ability index (PAI) of the rust layer indicates that the protective goethite was predominantly formed under the effect of the surface treatment. In conclusion, it can be said that the surface treatment worked well to promote the formation of the protective goethite rust layer on the weathering steel bridge during the 10-year exposure.
引用
收藏
页码:579 / 583
页数:5
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