The Mechanism of Atmospheric Rusting and the Protective Amorphous Rust on Low Alloy Steel(Chemistry)

スポンサーリンク

概要

• 論文の詳細を見る

• Atmospheric rusting of mild and low alloy steels was studied by means of infrared and far infra-red spectrophotometries, X-ray and electron diffraction methods and scanning electron microscopy. The rusting process can be interpreted on the basis of a previously reported diagram for rust formation in aqueous solution. A large amount of amorphous matter in rust formed in semi-rural atmosphere was identified by infra-red and far infra-red spectra as amorphous ferric oxyhydroxide, FeO_x(OH)_<3-2x>. The amorphous ferric oxyhydroxide rust on low alloy steel was dense and uniform, and contained a considerable amount of bound water. From these results it can be concluded that the amorphous ferric oxyhydroxide rust acts as a protective barrier against atmospheric rusting of the steels. Cu, P and Cr in low-alloy steels are inferred to favour the formation of crack-free, uniform rust layer and help to produce uniform amorphous ferric oxyhydroxide.

• 東北大学の論文

著者

• Misawa T.

  The Research Institute For Iron Steel And Other Metals

関連論文

• The Mechanism of Atmospheric Rusting and the Protective Amorphous Rust on Low Alloy Steel(Chemistry)
• The Mechanism of Formation of Iron Oxide and Oxyhydroxides in Aqueous Solutions at Room Temperature(Chemistry)
• Formation of Fe(II)_1-Fe(III)_1 Intermediate Green Complex on Oxidation of Ferrous Ion in Neutral and Slightly Alkaline Sulphate Solutions
• Formation of Fe(II)_1-Fe(III)_3 Green Complex on Oxidation of Ferrous Ion in Perchloric Acid Solution
• The Mechanism of Atmospheric Rusting and the Effect of Cu and P on the Rust Formation of Low Alloy Steels
• The Thermodynamic Consideration for Fe-H_2O System at 25℃

スポンサーリンク