过去对耐候钢耐腐蚀性机理的研究,锈层初期生长因素考虑较少.模拟工业大气环境的周期浸润实验室加速试验,对试验钢进行了腐蚀失重分析;通过扫描电镜、X射线衍射、阳极极化等手段对锈层进行分析.主要研究耐候钢和碳钢的锈层组织和电化学性能.结果表明:腐蚀初期耐候钢的锈层组织成分以α-FeOOH为主;碳钢的锈层组织成分以Fe2O3为主.α-FeOOH晶体枝晶纤细,锈层致密,具有保护性;Fe2O3枝晶粗大,锈层疏松多孔,不具有保护性;耐候钢锈层具有钝化作用,对基体有很好的保护性.
参考文献
| [1] | Kihira S I H;Murata T .Quantitative Classification of Patina Conditions for Weathering Steel Using a Recently Developed Instrument[J].Corrosion Science,1990,31:383. |
| [2] | Misawa T;Asami K;Hashimoto K .The Mechanism of Atmospheric Rusting and the Protective Amorphous Rust on Low Alloy Steel[J].Corrosion Science,1974,14:279. |
| [3] | Keiser J T;Brown C W .Characterization of the Passive Film Formed on Weathering Steels δ-FeOOH[J].Corrosion Science,1983,23:251. |
| [4] | Yamashita M;Konishi H;Mizuki J.Nano-Structure of Protective Rust Layer on Weathering Steel Exposed in Nation-Wide Environments in Japan[A].,2002:287. |
| [5] | Yamashita M;Miyuki H;Matsuda Y et al.The Long Term Growth of the Protective Rust Layer Formed on Weathering Steel by Atmospheric Corrosion during a Quarter of a Century[J].Corrosion Science,1994,36(02):283. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%