Corrosion resistant Group

Steels have good mechanical properties, and are applied to many infrastructures and structural components. However, the corrosion resistance of steels is not sufficient. As the corrosion behavior of steels show many and complicated cases, the investigation of mechanism is needed at first, then, the improve method should be established. We have tried to create corrosion resistant steels and surface finishing by using the detail corrosion analysis.

Field and objective

Corrosion analysis and its improvement of steels in infrastructure

The corrosion analysis and its improvement are conducted for steels in infrastructure. The main targets are the steels in concrete, weathering steels and coated ones. The creation of corrosion resistant steels and surface finish has been tried by using the advanced electrochemical techniques for the atmospheric corrosion.


Effect of interstitial carbon and interstitial nitrogen on corrosion resistance of steels

The corrosion resistance of steels is known to be improved by alloying with metal elements, such as chromium and nickel.  It is interestiting to note that the corrosion resistance of austenitic stainless steels have been reported to be improved by alloying with interstitial carbon and/or interstitial nitrogen. In order to clarify the mechanism and the potential of interstitial carbon and interstitial nitrogen as alloying elements to enhance the corrosion resistance of steels, we are analyzing the dissolution behavior of steels with interstitial carbon and/or interstitial nitrogen with electrochemical techniques.


Group Member

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Corrosion resistant Group
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
E-Mail: NISHIMURA.Toshiyasu=nims.go.jp(Please change "=" to "@")
National Institute for Materials Science (NIMS)
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
TEL.+81-(0)-29-859-2000
FAX.+81-(0)-29-859-2029